Super chess Bot is a tournament level bullet bot
// ==UserScript==
// @name ♟Super-chess-Bot
// @namespace http://tampermonkey.net/
// @version 8.1.1
// @description Super chess Bot is a tournament level bullet bot
// @author quantavil
// @match https://www.chess.com/play/computer*
// @match https://www.chess.com/game/*
// @match https://www.chess.com/play/online*
// @license MIT
// @icon https://www.google.com/s2/favicons?sz=64&domain=chess.com
// @grant none
// @antifeature membership
// ==/UserScript==
(async function () {
'use strict';
// Single-instance guard to prevent duplicate UI/intervals on SPA navigations
if (window.__GABIBOT_RUNNING__) {
console.log('GabiBot: Already running, skipping init.');
return;
}
window.__GABIBOT_RUNNING__ = true;
// Engine + logic constants
const API_URL = 'https://stockfish.online/api/s/v2.php';
const MULTIPV = 1;
const ANALYZE_TIMEOUT_MS = 3000; // ⚡ 8000 → 3000ms for bullet
const AUTO_MOVE_BASE = 800; // ⚡ 5000 → 800ms for bullet
const AUTO_MOVE_STEP = 300; // ⚡ 500 → 300ms for bullet
const RANDOM_JITTER_MIN = 50; // ⚡ 120 → 50ms for bullet
console.log('GabiBot: Script loaded, waiting for board...');
// Debounce helper
function debounce(fn, wait = 150) {
let t = null;
return (...args) => {
clearTimeout(t);
t = setTimeout(() => fn(...args), wait);
};
}
// Position cache system
const PositionCache = {};
function getRandomDepth() {
const minDepth = 5;
const maxDepth = Math.max(BotState.botPower || 10, minDepth);
return Math.floor(Math.random() * (maxDepth - minDepth + 1)) + minDepth;
}
function getHumanDelay(baseDelay, randomDelay) {
return baseDelay + Math.floor(Math.random() * randomDelay);
}
// Helpers
const sleep = (ms) => new Promise(r => setTimeout(r, ms));
const qs = (sel, root = document) => root.querySelector(sel);
const qsa = (sel, root = document) => Array.from(root.querySelectorAll(sel));
async function waitForElement(selector, timeout = 15000) {
return new Promise((resolve, reject) => {
const existing = qs(selector);
if (existing) return resolve(existing);
let timeoutId;
const obs = new MutationObserver(() => {
const el = qs(selector);
if (el) {
clearTimeout(timeoutId);
obs.disconnect();
resolve(el);
}
});
obs.observe(document.body, { childList: true, subtree: true });
timeoutId = setTimeout(() => {
obs.disconnect();
reject(new Error(`Element ${selector} not found within ${timeout}ms`));
}, timeout);
});
}
// Encapsulated state (avoid global pollution)
const BotState = {
hackEnabled: 0,
botPower: 8,
updateSpeed: 10,
autoMove: 1,
autoMoveSpeed: 8,
randomDelay: 300,
currentEvaluation: '-',
bestMove: '-',
principalVariation: '-',
statusInfo: 'Ready',
premoveEnabled: 0,
premoveMode: 'every',
premovePieces: { q: 1, r: 1, b: 1, n: 1, k: 1, p: 1 },
premoveChance: 85,
autoRematch: 0
};
// Global state
let ui = null;
let boardCtx = null; // { boardEl, drawingBoard, ctx, evalBarWrap, resizeObserver, cancelPendingOnUserAction, touchOpts, detachListeners }
let domObserver = null;
let tickTimer = null;
let gameStartInterval = null;
let gameEndInterval = null;
// Analysis queue
let analysisQueue = Promise.resolve();
let currentAnalysisId = 0;
// Tick state
let lastFenProcessedMain = '';
let lastFenProcessedPremove = '';
let lastFenSeen = '';
let pendingMoveTimeoutId = null;
// Premove state
let lastPremoveFen = '';
let lastPremoveUci = '';
// Cached DOM queries (reduce overhead)
let cachedGame = null;
let cachedGameTimestamp = 0;
const GAME_CACHE_TTL = 500; // Cache game object for 500ms
// Cache board flip state (changes infrequently)
let cachedBoardFlipped = false;
let cachedFlipTimestamp = 0;
// Main init
async function init() {
try {
const board = await waitForElement('.board, chess-board, .board-layout-vertical, .board-layout-horizontal').catch(() => null);
await buildUI();
attachToBoard(board || qs('chess-board') || qs('.board') || qs('[class*="board"]'));
startDomBoardWatcher(); // observe board replacements (SPA safe)
startAutoWatchers(); // game start/end watchers
console.log('GabiBot: Initialized.');
} catch (error) {
console.error('GabiBot Error:', error);
alert('GabiBot: Could not find chess board. Please refresh or check console.');
}
}
// Build UI and bind settings
async function buildUI() {
// Create menu
const menuWrap = document.createElement('div');
menuWrap.id = 'menuWrap';
const menuWrapStyle = document.createElement('style');
menuWrap.innerHTML = `
<div id="topText">
<a id="modTitle">♟ GabiBot</a>
<button id="minimizeBtn" title="Minimize (Ctrl+B)">─</button>
</div>
<div id="itemsList">
<div name="enableHack" class="listItem">
<input class="checkboxMod" type="checkbox">
<a class="itemDescription">Enable Bot</a>
<a class="itemState">Off</a>
</div>
<div name="autoMove" class="listItem">
<input class="checkboxMod" type="checkbox">
<a class="itemDescription">Auto Move</a>
<a class="itemState">Off</a>
</div>
<div class="divider"></div>
<div name="premoveEnabled" class="listItem">
<input class="checkboxMod" type="checkbox">
<a class="itemDescription">Premove System</a>
<a class="itemState">Off</a>
</div>
<div name="premoveMode" class="listItem select-row">
<a class="itemDescription">Premove Mode</a>
<select class="selectMod">
<option value="every">Every next move</option>
<option value="capture">Only if capture</option>
<option value="filter">By piece filters</option>
</select>
</div>
<div name="premoveChance" class="listItem info-item">
<a class="itemDescription">Premove Chance:</a>
<a class="itemState">0%</a>
</div>
<div name="premovePieces" class="listItem">
<div class="pieceFilters">
<label class="chip"><input type="checkbox" data-piece="q" checked><span>Q</span></label>
<label class="chip"><input type="checkbox" data-piece="r" checked><span>R</span></label>
<label class="chip"><input type="checkbox" data-piece="b" checked><span>B</span></label>
<label class="chip"><input type="checkbox" data-piece="n" checked><span>N</span></label>
<label class="chip"><input type="checkbox" data-piece="k" checked><span>K</span></label>
<label class="chip"><input type="checkbox" data-piece="p" checked><span>P</span></label>
</div>
<a class="itemDescription">Pieces</a>
<a class="itemState">-</a>
</div>
<div class="divider"></div>
<div name="autoRematch" class="listItem">
<input class="checkboxMod" type="checkbox">
<a class="itemDescription">Auto Rematch</a>
<a class="itemState">Off</a>
</div>
<div class="divider"></div>
<div name="botPower" class="listItem">
<input min="1" max="15" value="10" class="rangeSlider" type="range">
<a class="itemDescription">Depth</a>
<a class="itemState">12</a>
</div>
<div name="autoMoveSpeed" class="listItem">
<input min="1" max="10" value="8" class="rangeSlider" type="range">
<a class="itemDescription">Move Speed</a>
<a class="itemState">4</a>
</div>
<div name="randomDelay" class="listItem">
<input min="120" max="2000" value="300" class="rangeSlider" type="range">
<a class="itemDescription">Random Delay (ms)</a>
<a class="itemState">1000</a>
</div>
<div name="updateSpeed" class="listItem">
<input min="1" max="10" value="8" class="rangeSlider" type="range">
<a class="itemDescription">Update Rate</a>
<a class="itemState">8</a>
</div>
<div class="divider"></div>
<div name="currentEvaluation" class="listItem info-item">
<a class="itemDescription">Eval:</a>
<a class="itemState eval-value">-</a>
</div>
<div name="bestMove" class="listItem info-item">
<a class="itemDescription">Best:</a>
<a class="itemState">-</a>
</div>
<div name="pvDisplay" class="listItem info-item">
<a class="itemDescription">PV:</a>
<a class="itemState pv-text-state" title="Principal Variation">-</a>
</div>
<div name="statusInfo" class="listItem info-item">
<a class="itemDescription">Status:</a>
<a class="itemState status-text">Ready</a>
</div>
</div>
`;
menuWrapStyle.innerHTML = `
#menuWrap {
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
border-radius: 8px;
z-index: 9999999;
display: grid;
grid-template-rows: auto 1fr;
width: 300px; max-height: 550px;
position: fixed;
border: 1px solid rgba(255, 255, 255, 0.1);
background: rgba(20, 20, 20, 0.95);
backdrop-filter: blur(10px);
box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
user-select: none;
top: 20px; right: 20px;
transition: opacity 0.3s ease, transform 0.3s ease;
}
#menuWrap.minimized { grid-template-rows: auto 0fr; max-height: 50px; }
#menuWrap.minimized #itemsList { overflow: hidden; opacity: 0; }
#menuWrap.grabbing { cursor: grabbing !important; opacity: 0.9; }
.divider { height: 1px; background: rgba(255, 255, 255, 0.1); margin: 10px 0; }
.pv-text-state { color: #aaa !important; font-size: 11px; max-width: 150px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.eval-value { font-weight: bold; font-size: 14px; }
.status-text { color: #4CAF50 !important; font-size: 11px; }
.info-item { opacity: 0.8; margin-bottom: 8px !important; }
#evaluationBarWrap {
position: absolute;
height: 100%;
width: 20px;
left: -28px;
top: 0;
background: #000;
z-index: 50;
border-radius: 6px;
overflow: hidden;
border: 1px solid rgba(255, 255, 255, 0.2);
}
#evaluationBarWhite { position: absolute; top: 0; left: 0; right: 0; background: #f0d9b5; transition: height 0.3s ease; }
#evaluationBarBlack { position: absolute; bottom: 0; left: 0; right: 0; background: #000; transition: height 0.3s ease; }
#topText { display: flex; justify-content: space-between; align-items: center; padding: 12px 16px;
background: rgba(255, 255, 255, 0.05); border-bottom: 1px solid rgba(255, 255, 255, 0.1); cursor: move; }
#modTitle { color: #fff; font-size: 16px; font-weight: 600; letter-spacing: 0.5px; }
#minimizeBtn { background: rgba(255, 255, 255, 0.1); border: none; color: #fff; width: 24px; height: 24px;
border-radius: 4px; cursor: pointer; font-size: 14px; transition: background 0.2s; }
#minimizeBtn:hover { background: rgba(255, 255, 255, 0.2); }
#itemsList { overflow-y: auto; overflow-x: hidden; padding: 12px 16px; transition: opacity 0.3s ease; }
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: rgba(255, 255, 255, 0.05); }
::-webkit-scrollbar-thumb { background: rgba(255, 255, 255, 0.2); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255, 255, 255, 0.3); }
.listItem { display: flex; align-items: center; margin-bottom: 12px; gap: 8px; }
.listItem.select-row { display: grid; grid-template-columns: 1fr 1.2fr; gap: 10px; align-items: center; }
.listItem.select-row .itemDescription { color: rgba(255, 255, 255, 0.85); font-weight: 500; }
.checkboxMod { appearance: none; width: 18px; height: 18px; border: 2px solid rgba(255, 255, 255, 0.3); border-radius: 4px;
background: rgba(255, 255, 255, 0.05); cursor: pointer; position: relative; transition: all 0.2s; flex-shrink: 0; }
.checkboxMod:checked { background: #4CAF50; border-color: #4CAF50; }
.checkboxMod:checked::after { content: "✓"; position: absolute; color: white; font-size: 12px; top: 50%; left: 50%; transform: translate(-50%, -50%); }
.rangeSlider { -webkit-appearance: none; flex: 1; height: 4px; border-radius: 2px; background: rgba(255, 255, 255, 0.1); outline: none; }
.rangeSlider::-webkit-slider-thumb { -webkit-appearance: none; width: 14px; height: 14px; border-radius: 50%; background: #4CAF50; cursor: pointer; transition: transform 0.2s; }
.rangeSlider::-webkit-slider-thumb:hover { transform: scale(1.2); }
.itemDescription { color: rgba(255, 255, 255, 0.7); font-size: 12px; flex: 1; }
.itemState { color: #fff; font-size: 12px; min-width: 35px; text-align: right; font-weight: 500; }
#arrowCanvas { position: absolute !important; top: 0 !important; left: 0 !important; width: 100% !important; height: 100% !important; pointer-events: none !important; z-index: 100 !important; }
.selectMod {
appearance: none;
background: rgba(255,255,255,0.08);
border: 1px solid rgba(255,255,255,0.2);
color: #fff;
border-radius: 6px;
padding: 6px 28px 6px 10px;
flex: 1;
outline: none;
cursor: pointer;
font-size: 12px;
font-family: inherit;
background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23fff' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
background-repeat: no-repeat;
background-position: right 8px center;
transition: all 0.2s ease;
}
.selectMod:hover { background-color: rgba(255,255,255,0.12); border-color: rgba(255,255,255,0.3); }
.selectMod:focus { background-color: rgba(255,255,255,0.1); border-color: #4CAF50; box-shadow: 0 0 0 2px rgba(76, 175, 80, 0.2); }
.selectMod option { background: #1a1a1a; color: #fff; padding: 8px; }
.pieceFilters { display: flex; flex-wrap: wrap; gap: 6px; }
.pieceFilters .chip {
user-select: none; display: inline-flex; align-items: center; gap: 6px;
padding: 5px 10px; background: rgba(255,255,255,0.08);
border: 1px solid rgba(255,255,255,0.2); border-radius: 999px; cursor: pointer;
color: rgba(255,255,255,0.7); transition: all 0.2s ease;
font-size: 11px; font-weight: 500;
}
.pieceFilters .chip:hover { background: rgba(255,255,255,0.12); border-color: rgba(255,255,255,0.3); }
.pieceFilters .chip input { appearance: none; width: 14px; height: 14px; border-radius: 3px; border: 2px solid rgba(255,255,255,0.4); background: rgba(255,255,255,0.05); transition: all 0.2s ease; }
.pieceFilters .chip input:checked { background: #4CAF50; border-color: #4CAF50; }
.pieceFilters .chip input:checked::after { content: "✓"; color: white; font-size: 9px; display: flex; align-items: center; justify-content: center; height: 100%; }
.pieceFilters .chip input:checked + span { color: #fff; font-weight: 600; }
`;
document.body.appendChild(menuWrap);
document.body.appendChild(menuWrapStyle);
// Settings persistence
const Settings = {
save: debounce(() => {
try {
const settings = {
hackEnabled: BotState.hackEnabled,
botPower: BotState.botPower,
updateSpeed: BotState.updateSpeed,
autoMove: BotState.autoMove,
autoMoveSpeed: BotState.autoMoveSpeed,
randomDelay: Math.max(RANDOM_JITTER_MIN, BotState.randomDelay),
premoveEnabled: BotState.premoveEnabled,
premoveMode: BotState.premoveMode,
premovePieces: BotState.premovePieces,
autoRematch: BotState.autoRematch,
menuPosition: { top: menuWrap.style.top, left: menuWrap.style.left }
};
localStorage.setItem('gabibot_settings', JSON.stringify(settings));
} catch (e) { console.warn('Failed to save settings:', e); }
}, 200),
load() {
try {
const saved = localStorage.getItem('gabibot_settings');
if (!saved) return null;
const s = JSON.parse(saved);
BotState.hackEnabled = s.hackEnabled ?? 0;
BotState.botPower = s.botPower ?? 8;
BotState.updateSpeed = s.updateSpeed ?? 10;
BotState.autoMove = s.autoMove ?? 1;
BotState.autoMoveSpeed = s.autoMoveSpeed ?? 8;
BotState.randomDelay = Math.max(RANDOM_JITTER_MIN, s.randomDelay ?? 300);
BotState.premoveEnabled = s.premoveEnabled ?? 0;
BotState.premoveMode = s.premoveMode ?? 'every';
BotState.premovePieces = s.premovePieces ?? { q: 1, r: 1, b: 1, n: 1, k: 1, p: 1 };
BotState.autoRematch = s.autoRematch ?? 0;
return s;
} catch (e) { console.error('Failed to load settings:', e); return null; }
}
};
const saved = Settings.load();
if (saved?.menuPosition) {
menuWrap.style.top = saved.menuPosition.top || '20px';
menuWrap.style.left = saved.menuPosition.left || '';
menuWrap.style.right = saved.menuPosition.left ? 'auto' : '20px';
}
// Control binding helpers
const getElementByName = (name, el) => el.querySelector(`[name="${name}"]`);
const getInputElement = (el) => el.children[0];
const getStateElement = (el) => el.children[el.children.length - 1];
function bindControl(name, type, variable) {
const modElement = getElementByName(name, menuWrap);
if (!modElement) return;
const modState = getStateElement(modElement);
const modInput = getInputElement(modElement);
const key = variable.replace('BotState.', '');
if (type === 'checkbox') {
modInput.checked = !!BotState[key];
modState.textContent = BotState[key] ? 'On' : 'Off';
modInput.addEventListener('input', () => {
BotState[key] = modInput.checked ? 1 : 0;
modState.textContent = BotState[key] ? 'On' : 'Off';
Settings.save();
});
} else if (type === 'range') {
modInput.value = BotState[key];
modState.textContent = BotState[key];
modInput.addEventListener('input', () => {
let value = parseInt(modInput.value, 10);
const min = parseInt(modInput.min, 10);
const max = parseInt(modInput.max, 10);
value = Math.max(min, Math.min(max, value));
BotState[key] = value;
modInput.value = value;
modState.textContent = value;
Settings.save();
});
}
}
function bindSelect(name, variable) {
const el = getElementByName(name, menuWrap);
if (!el) return;
const select = el.querySelector('select');
const key = variable.replace('BotState.', '');
select.value = BotState[key];
select.addEventListener('change', () => {
BotState[key] = select.value;
refreshPremoveUIVisibility();
Settings.save();
});
}
function bindPieceFilters() {
const el = getElementByName('premovePieces', menuWrap);
if (!el) return;
const checks = qsa('.pieceFilters input[type="checkbox"]', el);
checks.forEach(chk => {
const p = String(chk.dataset.piece || '').toLowerCase();
chk.checked = !!BotState.premovePieces[p];
});
checks.forEach(chk => {
chk.addEventListener('input', () => {
const p = String(chk.dataset.piece || '').toLowerCase();
BotState.premovePieces[p] = chk.checked ? 1 : 0;
Settings.save();
});
});
}
function refreshPremoveUIVisibility() {
const row = getElementByName('premovePieces', menuWrap);
if (row) row.style.display = (BotState.premoveMode === 'filter') ? 'flex' : 'none';
}
bindControl('enableHack', 'checkbox', 'BotState.hackEnabled');
bindControl('autoMove', 'checkbox', 'BotState.autoMove');
bindControl('botPower', 'range', 'BotState.botPower');
bindControl('autoMoveSpeed', 'range', 'BotState.autoMoveSpeed');
bindControl('updateSpeed', 'range', 'BotState.updateSpeed');
bindControl('randomDelay', 'range', 'BotState.randomDelay');
bindControl('premoveEnabled', 'checkbox', 'BotState.premoveEnabled');
bindSelect('premoveMode', 'BotState.premoveMode');
bindPieceFilters();
refreshPremoveUIVisibility();
bindControl('autoRematch', 'checkbox', 'BotState.autoRematch');
// Drag/move panel
makePanelDraggable(menuWrap);
// Minimize
document.getElementById('minimizeBtn').addEventListener('click', () => menuWrap.classList.toggle('minimized'));
document.addEventListener('keydown', (e) => {
if (e.key === 'b' && e.ctrlKey) {
e.preventDefault();
menuWrap.classList.toggle('minimized');
}
});
ui = {
menuWrap,
setText(name, value, title) {
const el = getElementByName(name, menuWrap);
if (!el) return;
const state = getStateElement(el);
state.textContent = value ?? '-';
if (title) state.title = title;
},
updateDisplay(playingAs) {
this.setText('currentEvaluation', BotState.currentEvaluation);
this.setText('bestMove', BotState.bestMove);
this.setText('pvDisplay', BotState.principalVariation, BotState.principalVariation);
this.setText('statusInfo', BotState.statusInfo);
updateEvaluationBar(BotState.currentEvaluation, playingAs);
},
Settings
};
// React to enable/disable or speed changes
let lastHackEnabled = BotState.hackEnabled;
let lastUpdateSpeed = BotState.updateSpeed;
let lastPremoveEnabled = BotState.premoveEnabled;
setInterval(() => {
if (BotState.hackEnabled !== lastHackEnabled) {
lastHackEnabled = BotState.hackEnabled;
if (BotState.hackEnabled) {
BotState.statusInfo = 'Ready';
ui.updateDisplay(pa());
startTickLoop();
} else {
stopTickLoop();
Object.keys(PositionCache).forEach(key => delete PositionCache[key]);
clearArrows();
cancelPendingMove();
BotState.statusInfo = 'Bot disabled';
BotState.currentEvaluation = '-';
BotState.bestMove = '-';
ui.updateDisplay(pa());
}
ui.Settings.save();
}
if (BotState.updateSpeed !== lastUpdateSpeed) {
lastUpdateSpeed = BotState.updateSpeed;
if (BotState.hackEnabled) startTickLoop();
}
if (BotState.premoveEnabled !== lastPremoveEnabled) {
lastPremoveEnabled = BotState.premoveEnabled;
if (BotState.hackEnabled) startTickLoop();
}
}, 200);
}
// Board attach/detach
function attachToBoard(boardEl) {
// Invalidate cached game when board changes
cachedGame = null;
cachedGameTimestamp = 0;
detachFromBoard(); // cleanup any previous
if (!boardEl) {
console.warn('GabiBot: No board element to attach.');
return;
}
// Ensure relative for overlay
if (getComputedStyle(boardEl).position === 'static') boardEl.style.position = 'relative';
const drawingBoard = document.createElement('canvas');
drawingBoard.id = 'arrowCanvas';
drawingBoard.style.cssText = 'position:absolute;top:0;left:0;pointer-events:none;z-index:100;';
const ctx = drawingBoard.getContext('2d');
const evalBarWrap = document.createElement('div');
evalBarWrap.id = 'evaluationBarWrap';
const whiteBar = document.createElement('div');
whiteBar.id = 'evaluationBarWhite';
const blackBar = document.createElement('div');
blackBar.id = 'evaluationBarBlack';
evalBarWrap.appendChild(whiteBar);
evalBarWrap.appendChild(blackBar);
boardEl.appendChild(evalBarWrap);
boardEl.appendChild(drawingBoard);
const resizeCanvas = () => {
const rect = boardEl.getBoundingClientRect();
drawingBoard.width = rect.width;
drawingBoard.height = rect.height;
};
resizeCanvas();
const ro = new ResizeObserver(resizeCanvas);
ro.observe(boardEl);
const cancelPendingOnUserAction = () => {
if (pendingMoveTimeoutId) {
clearTimeout(pendingMoveTimeoutId);
pendingMoveTimeoutId = null;
BotState.statusInfo = 'Manual move in progress...';
ui.updateDisplay(pa());
}
};
const touchOpts = { passive: true, capture: true };
boardEl.addEventListener('mousedown', cancelPendingOnUserAction, true);
boardEl.addEventListener('touchstart', cancelPendingOnUserAction, touchOpts);
boardCtx = {
boardEl,
drawingBoard,
ctx,
evalBarWrap,
resizeObserver: ro,
cancelPendingOnUserAction,
touchOpts,
detachListeners() {
try { boardEl.removeEventListener('mousedown', cancelPendingOnUserAction, true); } catch { }
try { boardEl.removeEventListener('touchstart', cancelPendingOnUserAction, touchOpts); } catch { }
try { ro.disconnect(); } catch { }
try { drawingBoard.remove(); } catch { }
try { evalBarWrap.remove(); } catch { }
}
};
// Show ready
ui.updateDisplay(pa());
if (BotState.hackEnabled) startTickLoop();
}
function detachFromBoard() {
if (!boardCtx) return;
try { boardCtx.detachListeners(); } catch { }
boardCtx = null;
}
function startDomBoardWatcher() {
if (domObserver) try { domObserver.disconnect(); } catch { }
domObserver = new MutationObserver(debounce(() => {
// Look for a current board element
const newBoard = qs('chess-board') || qs('.board') || qs('[class*="board"]');
if (!newBoard) return;
if (!boardCtx || boardCtx.boardEl !== newBoard) {
console.log('GabiBot: Board element changed, re-attaching.');
attachToBoard(newBoard);
}
}, 200));
domObserver.observe(document.body, { childList: true, subtree: true });
}
// Game helpers
const getBoard = () => boardCtx?.boardEl || qs('chess-board') || qs('.board');
const getGame = () => {
const now = Date.now();
if (cachedGame && (now - cachedGameTimestamp) < GAME_CACHE_TTL) {
return cachedGame;
}
cachedGame = getBoard()?.game || null;
cachedGameTimestamp = now;
return cachedGame;
};
const getFen = (g) => { try { return g?.getFEN ? g.getFEN() : null; } catch { return null; } };
const getPlayerColor = (g) => { try { const v = g?.getPlayingAs?.(); return v === 2 ? 'b' : 'w'; } catch { return 'w'; } };
const getSideToMove = (g) => { const fen = getFen(g); return fen ? (fen.split(' ')[1] || null) : null; };
const isPlayersTurn = (g) => { const me = getPlayerColor(g), stm = getSideToMove(g); return !!me && !!stm && me === stm; };
const pa = () => (getGame()?.getPlayingAs ? getGame().getPlayingAs() : 1);
function isBoardFlipped() {
const now = Date.now();
if ((now - cachedFlipTimestamp) < 1000) return cachedBoardFlipped;
const el = getBoard();
let flipped = false;
try {
const attr = el?.getAttribute?.('orientation');
if (attr === 'black') flipped = true;
else if (attr === 'white') flipped = false;
else if (el?.classList?.contains('flipped')) flipped = true;
else if (getGame()?.getPlayingAs?.() === 2) flipped = true;
} catch { }
cachedBoardFlipped = flipped;
cachedFlipTimestamp = now;
return flipped;
}
// Arrow drawing
function clearArrows() {
if (!boardCtx) return;
const { drawingBoard, ctx } = boardCtx;
ctx.clearRect(0, 0, drawingBoard.width, drawingBoard.height);
}
function drawArrow(uciFrom, uciTo, color, thickness) {
if (!boardCtx || !uciFrom || !uciTo || uciFrom.length < 2 || uciTo.length < 2) return;
const { drawingBoard, ctx } = boardCtx;
const a = getSquareCenterCanvasXY(uciFrom);
const b = getSquareCenterCanvasXY(uciTo);
if (!a || !b) return;
const size = Math.min(drawingBoard.width, drawingBoard.height);
const tile = size / 8;
ctx.beginPath(); ctx.moveTo(a.x, a.y); ctx.lineTo(b.x, b.y);
ctx.lineWidth = thickness; ctx.strokeStyle = color; ctx.lineCap = 'round'; ctx.stroke();
ctx.beginPath(); ctx.arc(a.x, a.y, tile / 7, 0, 2 * Math.PI);
ctx.fillStyle = color.replace('0.7', '0.3'); ctx.fill(); ctx.strokeStyle = color; ctx.lineWidth = 2; ctx.stroke();
ctx.beginPath(); ctx.arc(b.x, b.y, tile / 5, 0, 2 * Math.PI);
ctx.fillStyle = color.replace('0.7', '0.5'); ctx.fill(); ctx.strokeStyle = color; ctx.lineWidth = 2; ctx.stroke();
}
// Square to client XY
function getSquareCenterClientXY(square) {
if (!boardCtx || !square || square.length < 2) return null;
const file = 'abcdefgh'.indexOf(square[0]);
const rank = parseInt(square[1], 10);
if (file < 0 || isNaN(rank)) return null;
const el = getBoard();
const rect = el.getBoundingClientRect();
const size = Math.min(rect.width, rect.height);
const tile = size / 8;
const offsetX = rect.left + (rect.width - size) / 2;
const offsetY = rect.top + (rect.height - size) / 2;
let x = file, y = 8 - rank;
if (isBoardFlipped()) { x = 7 - x; y = 7 - y; }
return { x: offsetX + (x + 0.5) * tile, y: offsetY + (y + 0.5) * tile };
}
function getSquareCenterCanvasXY(square) {
if (!boardCtx || !square || square.length < 2) return null;
const p = getSquareCenterClientXY(square);
if (!p) return null;
const rect = boardCtx.boardEl.getBoundingClientRect();
return { x: p.x - rect.left, y: p.y - rect.top };
}
// Minimal event sequences (fix: reduce excessive event firing)
function dispatchPointerOrMouse(el, type, opts, usePointer) {
if (!el) return;
if (usePointer) {
try { el.dispatchEvent(new PointerEvent(type, { bubbles: true, cancelable: true, composed: true, ...opts })); return; } catch { /* fallthrough */ }
}
el.dispatchEvent(new MouseEvent(type.replace('pointer', 'mouse'), { bubbles: true, cancelable: true, composed: true, ...opts }));
}
function getTargetAt(x, y) {
return document.elementFromPoint(x, y) || getBoard() || document.body;
}
async function simulateClickMove(from, to) {
const a = getSquareCenterClientXY(from), b = getSquareCenterClientXY(to);
if (!a || !b) return false;
const usePointer = !!window.PointerEvent;
const startEl = getTargetAt(a.x, a.y);
const endEl = getTargetAt(b.x, b.y);
const downStart = { clientX: a.x, clientY: a.y, pointerId: 1, pointerType: 'mouse', isPrimary: true, buttons: 1 };
const upStart = { clientX: a.x, clientY: a.y, pointerId: 1, pointerType: 'mouse', isPrimary: true, buttons: 0 };
const downEnd = { clientX: b.x, clientY: b.y, pointerId: 1, pointerType: 'mouse', isPrimary: true, buttons: 1 };
const upEnd = { clientX: b.x, clientY: b.y, pointerId: 1, pointerType: 'mouse', isPrimary: true, buttons: 0 };
// ⚡ Reduced delays for bullet
dispatchPointerOrMouse(startEl, usePointer ? 'pointerdown' : 'mousedown', downStart, usePointer);
await sleep(10); // ⚡ 20 → 10ms
dispatchPointerOrMouse(startEl, usePointer ? 'pointerup' : 'mouseup', upStart, usePointer);
startEl.dispatchEvent(new MouseEvent('click', { bubbles: true, cancelable: true, composed: true, clientX: a.x, clientY: a.y }));
await sleep(20); // ⚡ 40 → 20ms
dispatchPointerOrMouse(endEl, usePointer ? 'pointerdown' : 'mousedown', downEnd, usePointer);
await sleep(10); // ⚡ 20 → 10ms
dispatchPointerOrMouse(endEl, usePointer ? 'pointerup' : 'mouseup', upEnd, usePointer);
endEl.dispatchEvent(new MouseEvent('click', { bubbles: true, cancelable: true, composed: true, clientX: b.x, clientY: b.y }));
return true;
}
async function simulateDragMove(from, to) {
const a = getSquareCenterClientXY(from), b = getSquareCenterClientXY(to);
if (!a || !b) return false;
const usePointer = !!window.PointerEvent;
const startEl = getTargetAt(a.x, a.y);
const endEl = getTargetAt(b.x, b.y);
const down = { clientX: a.x, clientY: a.y, pointerId: 1, pointerType: 'mouse', isPrimary: true, buttons: 1 };
const up = { clientX: b.x, clientY: b.y, pointerId: 1, pointerType: 'mouse', isPrimary: true, buttons: 0 };
dispatchPointerOrMouse(startEl, usePointer ? 'pointerdown' : 'mousedown', down, usePointer);
// Fewer move steps to avoid excessive firing
const steps = 3;
for (let i = 1; i <= steps; i++) {
const t = i / steps;
const mx = a.x + (b.x - a.x) * t;
const my = a.y + (b.y - a.y) * t;
dispatchPointerOrMouse(endEl, usePointer ? 'pointermove' : 'mousemove', { clientX: mx, clientY: my, buttons: 1 }, usePointer);
await sleep(12);
}
dispatchPointerOrMouse(endEl, usePointer ? 'pointerup' : 'mouseup', up, usePointer);
return true;
}
async function waitForFenChange(prevFen, timeout = 1000) {
const start = Date.now();
while (Date.now() - start < timeout) {
const g = getGame();
const fen = g?.getFEN ? g.getFEN() : null;
if (fen && fen !== prevFen) return true;
await sleep(40);
}
return false;
}
// Promotion handling
async function maybeSelectPromotion(prefer = 'q') {
const preferList = (prefer ? [prefer] : ['q', 'r', 'b', 'n']).map(c => c.toLowerCase());
const getCandidates = () => qsa('[data-test-element*="promotion"], [class*="promotion"] [class*="piece"], [class*="promotion"] button, .promotion-piece, .promotion-card');
const tryClick = (el) => {
try {
el.click?.();
el.dispatchEvent(new MouseEvent('mousedown', { bubbles: true, cancelable: true }));
el.dispatchEvent(new MouseEvent('mouseup', { bubbles: true, cancelable: true }));
el.dispatchEvent(new MouseEvent('click', { bubbles: true, cancelable: true }));
return true;
} catch { return false; }
};
const start = Date.now();
while (Date.now() - start < 1000) {
const nodes = getCandidates();
if (nodes.length) {
for (const pref of preferList) {
const match = nodes.find(n =>
(n.dataset?.piece?.toLowerCase?.() || '') === pref ||
(n.getAttribute?.('data-piece') || '').toLowerCase() === pref ||
(n.getAttribute?.('aria-label') || '').toLowerCase().includes(pref) ||
(n.className || '').toLowerCase().includes(pref) ||
(n.textContent || '').toLowerCase().includes(pref)
);
if (match && tryClick(match)) return true;
}
if (tryClick(nodes[0])) return true;
}
await sleep(60);
}
return false;
}
function cancelPendingMove() {
if (pendingMoveTimeoutId) {
clearTimeout(pendingMoveTimeoutId);
pendingMoveTimeoutId = null;
}
}
async function makeMove(from, to, expectedFen, promotionChar) {
const game = getGame();
if (!game || !BotState.autoMove) return false;
const beforeFen = getFen(game);
if (!beforeFen || beforeFen !== expectedFen || !isPlayersTurn(game)) return false;
await simulateClickMove(from, to);
if (promotionChar) await maybeSelectPromotion(String(promotionChar).toLowerCase());
// Only treat as success if the real board FEN changed
const changed = await waitForFenChange(beforeFen, 1000);
return !!changed;
}
// Engine integration
function scoreFrom(obj) {
if (!obj) return {};
if (typeof obj === 'object') {
if ('mate' in obj && obj.mate !== 0) return { mate: parseInt(obj.mate, 10) };
if ('cp' in obj) return { cp: parseInt(obj.cp, 10) };
}
if (typeof obj === 'string') {
if (obj.toUpperCase().includes('M')) {
const m = parseInt(obj.replace(/[^-0-9]/g, ''), 10);
if (!isNaN(m)) return { mate: m };
}
const cpFloat = parseFloat(obj);
if (!isNaN(cpFloat)) return { cp: Math.round(cpFloat * 100) };
}
if (typeof obj === 'number') return { cp: Math.round(obj * 100) };
return {};
}
function scoreToDisplay(score) {
if (score && typeof score.mate === 'number' && score.mate !== 0) return `M${score.mate}`;
if (score && typeof score.cp === 'number') return (score.cp / 100).toFixed(2);
return '-';
}
function scoreNumeric(s) {
if (!s) return -Infinity;
if (typeof s.mate === 'number') return s.mate > 0 ? 100000 - s.mate : -100000 - s.mate;
if (typeof s.cp === 'number') return s.cp;
return -Infinity;
}
async function fetchEngineData(fen, depth, signal) {
const startTime = performance.now();
console.log(`GabiBot: 📡 API request STARTED for FEN: ${fen.substring(0, 20)}... | Depth: ${depth}`);
const call = async (params) => {
const url = `${API_URL}?fen=${encodeURIComponent(fen)}&depth=${depth}&${params}`;
const ctrl = new AbortController();
const onAbort = () => ctrl.abort('external-abort');
if (signal?.aborted) {
ctrl.abort('already-aborted');
throw new DOMException('Aborted', 'AbortError');
}
signal?.addEventListener('abort', onAbort, { once: true });
const to = setTimeout(() => ctrl.abort('timeout'), ANALYZE_TIMEOUT_MS);
try {
const res = await fetch(url, {
method: 'GET',
headers: { Accept: 'application/json' },
signal: ctrl.signal
});
const endTime = performance.now();
const duration = endTime - startTime;
if (!res.ok) {
console.warn(`GabiBot: ❌ API failed (${res.status}) after ${duration.toFixed(0)}ms`);
throw new Error(`API error ${res.status}`);
}
const data = await res.json();
if (data.success === false) {
console.warn(`GabiBot: ❌ API success=false after ${duration.toFixed(0)}ms`);
throw new Error('API success=false');
}
console.log(`GabiBot: ✅ API success in ${duration.toFixed(0)}ms | FEN: ${fen.substring(0, 20)}...`);
return data;
} finally {
clearTimeout(to);
signal?.removeEventListener('abort', onAbort);
}
};
try { return await call(`multipv=${MULTIPV}&mode=analysis`); }
catch {
try { return await call(`multipv=${MULTIPV}&mode=bestmove`); }
catch { return await call('mode=bestmove'); }
}
}
async function fetchEngineDataWithRetry(fen, depth, signal, maxRetries = 1) {
// Simple cache check
if (PositionCache[fen]) {
console.log('GabiBot: 🗃️ Using cached analysis');
return PositionCache[fen];
}
let lastError;
for (let attempt = 0; attempt <= maxRetries; attempt++) {
if (signal?.aborted || !BotState.hackEnabled) {
console.log('GabiBot: ⏹️ Analysis aborted before attempt', attempt + 1);
throw new DOMException('Aborted', 'AbortError');
}
if (attempt > 0) {
const backoff = Math.min(1000 * Math.pow(2, attempt - 1), 5000);
console.log(`GabiBot: 🔁 Retry attempt #${attempt} for FEN: ${fen.substring(0, 20)}... (backoff: ${backoff}ms)`);
await sleep(backoff);
}
try {
const data = await fetchEngineData(fen, depth, signal);
PositionCache[fen] = data;
if (attempt > 0) {
console.log(`GabiBot: 🎯 Retry succeeded on attempt #${attempt + 1}`);
}
return data;
} catch (error) {
lastError = error;
console.warn(`GabiBot: ⚠️ Attempt #${attempt + 1} failed:`, error.message || error);
if (attempt >= maxRetries) break;
}
}
console.error(`GabiBot: 💥 All ${maxRetries + 1} attempts failed for FEN: ${fen.substring(0, 20)}...`);
throw lastError;
}
function parseBestLine(data) {
const lines = [];
const pushLine = (uci, pv, score) => {
if (!uci || uci.length < 4) return;
lines.push({ uci: uci.trim(), pv: (pv || '').trim(), score: score || {} });
};
const addFromArray = (arr) => arr.forEach(item => {
const pv = item.pv || item.line || item.moves || '';
const uci = item.uci || (pv ? pv.split(' ')[0] : '');
const score = scoreFrom(item.score || item.evaluation || item.eval);
pushLine(uci, pv, score);
});
if (Array.isArray(data.analysis)) addFromArray(data.analysis);
else if (Array.isArray(data.lines)) addFromArray(data.lines);
else if (Array.isArray(data.pvs)) addFromArray(data.pvs);
if (!lines.length && typeof data.bestmove === 'string') {
const parts = data.bestmove.split(' ');
let uci = parts.length > 1 ? parts[1] : parts[0];
if (uci === 'bestmove' && parts[1]) uci = parts[1];
const pv = data.pv || data.continuation || uci;
const score = scoreFrom(data.evaluation);
pushLine(uci, pv, score);
}
lines.sort((a, b) => scoreNumeric(b.score) - scoreNumeric(a.score));
return lines[0] || null;
}
function updateEvaluationBar(evaluation, playingAs) {
if (!boardCtx) return;
const whiteBar = boardCtx.evalBarWrap.querySelector('#evaluationBarWhite');
const blackBar = boardCtx.evalBarWrap.querySelector('#evaluationBarBlack');
if (!whiteBar || !blackBar) return;
let score = 0;
if (typeof evaluation === 'string') {
if (evaluation === '-' || evaluation === 'Error') {
// Neutral position when no eval
whiteBar.style.height = '50%';
blackBar.style.height = '50%';
return;
}
if (evaluation.includes('M')) {
const m = parseInt(evaluation.replace('M', '').replace('+', ''), 10);
// Mate scores: positive = White mating, negative = Black mating
score = m > 0 ? 10 : -10; // Cap at ±10 for mate
} else {
score = parseFloat(evaluation);
}
} else {
score = parseFloat(evaluation);
}
if (isNaN(score)) {
whiteBar.style.height = '50%';
blackBar.style.height = '50%';
return;
}
// Clamp score for visual representation
const maxScore = 5;
const clampedScore = Math.max(-maxScore, Math.min(maxScore, score));
// Calculate percentages (eval is ALWAYS from White's perspective)
// +score = White winning, -score = Black winning
const whitePercent = 50 + (clampedScore / maxScore) * 50;
const blackPercent = 100 - whitePercent;
// NO FLIPPING! The evaluation meaning stays constant.
// White winning = more white, regardless of board orientation
whiteBar.style.height = `${whitePercent}%`;
blackBar.style.height = `${blackPercent}%`;
const ourColor = getPlayerColor(getGame());
const ourEval = ourColor === 'w' ? score : -score;
if (ourEval < -2) {
boardCtx.evalBarWrap.style.borderColor = 'rgba(255, 100, 100, 0.5)';
} else if (ourEval > 2) {
boardCtx.evalBarWrap.style.borderColor = 'rgba(100, 255, 100, 0.5)';
} else {
boardCtx.evalBarWrap.style.borderColor = 'rgba(255, 255, 255, 0.2)';
}
}
// FEN helpers for piece info
function fenCharAtSquare(fen, square) {
if (!fen || !square) return null;
const placement = fen.split(' ')[0];
const ranks = placement.split('/');
const file = 'abcdefgh'.indexOf(square[0]);
const rankNum = parseInt(square[1], 10);
if (file < 0 || rankNum < 1 || rankNum > 8 || ranks.length !== 8) return null;
const row = 8 - rankNum;
const rowStr = ranks[row];
let col = 0;
for (const ch of rowStr) {
if (/\d/.test(ch)) {
col += parseInt(ch, 10);
if (col > file) return null;
} else {
if (col === file) return ch;
col++;
}
}
return null;
}
function pieceFromFenChar(ch) {
if (!ch) return null;
const isUpper = ch === ch.toUpperCase();
return { color: isUpper ? 'w' : 'b', type: ch.toLowerCase() };
}
// En passant detection for premove capture mode
function isEnPassantCapture(fen, from, to, ourColor) {
const parts = fen.split(' ');
const ep = parts[3];
const fromPiece = pieceFromFenChar(fenCharAtSquare(fen, from));
if (!fromPiece || fromPiece.color !== ourColor || fromPiece.type !== 'p') return false;
return ep && ep !== '-' && to === ep && from[0] !== to[0];
}
// Determine our planned move from PV given side-to-move
function getOurMoveFromPV(pv, ourColor, sideToMove) {
if (!pv) return null;
const moves = pv.trim().split(/\s+/).filter(Boolean);
if (!moves.length) return null;
const idx = (sideToMove === ourColor) ? 0 : 1;
return moves[idx] || null;
}
// Execute best move (draw + optional auto-move)
async function executeAction(selectedUci, analysisFen) {
try {
clearArrows();
if (!selectedUci || selectedUci.length < 4) return;
const from = selectedUci.substring(0, 2);
const to = selectedUci.substring(2, 4);
const promotionChar = selectedUci.length >= 5 ? selectedUci[4] : null;
drawArrow(from, to, 'rgba(100, 255, 100, 0.7)', 4);
if (BotState.hackEnabled && BotState.autoMove) {
const game = getGame();
if (!game || !isPlayersTurn(game)) {
BotState.statusInfo = 'Waiting for opponent...'; ui.updateDisplay(pa()); return;
}
cancelPendingMove();
const baseDelay = Math.max(0, AUTO_MOVE_BASE - BotState.autoMoveSpeed * AUTO_MOVE_STEP);
const totalDelay = getHumanDelay(baseDelay, BotState.randomDelay);
console.log(`GabiBot: Delay ${totalDelay}ms`);
BotState.statusInfo = `Moving in ${(totalDelay / 1000).toFixed(1)}s`; ui.updateDisplay(pa());
pendingMoveTimeoutId = setTimeout(async () => {
const g = getGame(); if (!g) return;
if (!isPlayersTurn(g)) { BotState.statusInfo = 'Move canceled (not our turn)'; ui.updateDisplay(pa()); return; }
if (getFen(g) !== analysisFen) { BotState.statusInfo = 'Move canceled (position changed)'; ui.updateDisplay(pa()); return; }
BotState.statusInfo = 'Making move...'; ui.updateDisplay(pa());
const success = await makeMove(from, to, analysisFen, promotionChar);
BotState.statusInfo = success ? '✓ Move made!' : '❌ Move failed';
ui.updateDisplay(pa());
// Retry on failure
if (!success) {
setTimeout(() => {
if (BotState.hackEnabled && isPlayersTurn(getGame())) {
lastFenProcessedMain = '';
tick();
}
}, 800);
}
}, totalDelay);
} else {
BotState.statusInfo = 'Ready (manual)'; ui.updateDisplay(pa());
}
} catch (error) {
console.error('Error in executeAction:', error);
}
}
// Single queued analysis runner for both main and premove
function scheduleAnalysis(kind, fen) {
const analysisId = ++currentAnalysisId;
analysisQueue = analysisQueue.then(async () => {
if (analysisId !== currentAnalysisId) return;
if (!BotState.hackEnabled) return;
const game = getGame();
if (!game) return;
if (kind === 'main') {
if (lastFenProcessedMain === fen) return;
} else {
if (lastFenProcessedPremove === fen) return;
}
const ctrl = new AbortController(); // Local controller per analysis
try {
BotState.statusInfo = kind === 'main' ? '🔄 Analyzing...' : '🔄 Analyzing (premove)...';
ui.updateDisplay(pa());
const randomDepth = getRandomDepth();
// Check if newer analysis superseded this one
if (analysisId !== currentAnalysisId) {
ctrl.abort('superseded');
return;
}
const data = await fetchEngineDataWithRetry(fen, randomDepth, ctrl.signal);
// Double-check still current after async operation
if (analysisId !== currentAnalysisId) return;
const best = parseBestLine(data);
if (kind === 'main') {
BotState.bestMove = best?.uci || '-';
BotState.currentEvaluation = scoreToDisplay(best?.score);
BotState.principalVariation = best?.pv || 'Not available';
BotState.statusInfo = '✓ Ready';
ui.updateDisplay(pa());
if (best) await executeAction(best.uci, fen);
lastFenProcessedMain = fen;
} else {
// Premove analysis
const ourColor = getPlayerColor(game);
const stm = getSideToMove(game);
const ourUci = getOurMoveFromPV(best?.pv || '', ourColor, stm) ||
((stm === ourColor) ? (best?.uci || null) : null);
const premoveEvalDisplay = scoreToDisplay(best?.score);
if (!ourUci) {
BotState.statusInfo = 'Premove unavailable (no PV)';
ui.updateDisplay(pa());
lastFenProcessedPremove = fen;
return;
}
if (!shouldPremove(ourUci, fen)) {
BotState.statusInfo = `Premove skipped (${BotState.premoveMode})`;
ui.updateDisplay(pa());
lastFenProcessedPremove = fen;
return;
}
// 🛡️ SAFETY CHECK: Threat detection
const safetyCheck = checkPremoveSafety(fen, ourUci, ourColor);
if (!safetyCheck.safe) {
BotState.statusInfo = `🛡️ Premove blocked: ${safetyCheck.reason}`;
ui.updateDisplay(pa());
lastFenProcessedPremove = fen;
return;
}
let currentChance = getEvalBasedPremoveChance(premoveEvalDisplay, ourColor);
// 🛡️ Reduce confidence based on risk level
if (safetyCheck.riskLevel > 0) {
const riskPenalty = safetyCheck.riskLevel * 0.5; // 50% reduction at max risk
currentChance = Math.max(5, currentChance - riskPenalty);
console.log(`GabiBot: Risk detected (${safetyCheck.riskLevel}%), reducing confidence: ${currentChance.toFixed(0)}%`);
}
const chanceEl = qs('[name="premoveChance"] .itemState');
if (chanceEl) chanceEl.textContent = `${Math.round(currentChance)}%`;
const roll = Math.random() * 100;
if (roll > currentChance) {
const skipReason = safetyCheck.riskLevel > 0
? `${safetyCheck.reason} (${roll.toFixed(0)}% > ${currentChance.toFixed(0)}%)`
: `eval: ${premoveEvalDisplay}, ${roll.toFixed(0)}% > ${currentChance.toFixed(0)}%`;
BotState.statusInfo = `Premove skipped: ${skipReason}`;
ui.updateDisplay(pa());
lastFenProcessedPremove = fen;
return;
}
const from = ourUci.substring(0, 2);
const to = ourUci.substring(2, 4);
clearArrows();
drawArrow(from, to, 'rgba(80, 180, 255, 0.7)', 3);
await simulateClickMove(from, to);
await sleep(80);
lastPremoveFen = fen;
lastPremoveUci = ourUci;
const safetyEmoji = safetyCheck.riskLevel === 0 ? '✅' : safetyCheck.riskLevel < 25 ? '⚠️' : '🔶';
BotState.statusInfo = `${safetyEmoji} Premove: ${ourUci} (${Math.round(currentChance)}% confidence)`;
ui.updateDisplay(pa());
lastFenProcessedPremove = fen;
}
} catch (error) {
if (String(error?.name || error).toLowerCase().includes('abort') ||
String(error?.message || error).toLowerCase().includes('superseded')) {
BotState.statusInfo = '⏸ Analysis canceled';
} else {
console.error('GabiBot API Error:', error);
BotState.statusInfo = '❌ API Error';
BotState.currentEvaluation = 'Error';
}
ui.updateDisplay(pa());
}
});
}
// ═══════════════════════════════════════════════════════════
// PREMOVE SAFETY: HEURISTIC THREAT DETECTION
// ═══════════════════════════════════════════════════════════
// Piece values for safety checks
const PIECE_VALUES = { p: 1, n: 3, b: 3, r: 5, q: 9, k: 0 };
// Get all squares attacking a given square (fast heuristic)
function getAttackersOfSquare(fen, targetSquare, attackerColor) {
const attackers = [];
const placement = fen.split(' ')[0];
const ranks = placement.split('/');
const tFile = 'abcdefgh'.indexOf(targetSquare[0]);
const tRank = parseInt(targetSquare[1], 10);
if (tFile < 0 || tRank < 1 || tRank > 8) return attackers;
// Helper: check square and add if it contains attacker piece
const checkSquare = (file, rank, pieceTypes) => {
if (file < 0 || file > 7 || rank < 1 || rank > 8) return;
const sq = 'abcdefgh'[file] + rank;
const ch = fenCharAtSquare(fen, sq);
const piece = pieceFromFenChar(ch);
if (piece && piece.color === attackerColor && pieceTypes.includes(piece.type)) {
attackers.push({ square: sq, piece: piece.type });
}
};
// Pawn attacks (diagonal)
const pawnDir = attackerColor === 'w' ? 1 : -1;
checkSquare(tFile - 1, tRank - pawnDir, ['p']);
checkSquare(tFile + 1, tRank - pawnDir, ['p']);
// Knight attacks
const knightMoves = [
[2, 1], [2, -1], [-2, 1], [-2, -1],
[1, 2], [1, -2], [-1, 2], [-1, -2]
];
knightMoves.forEach(([df, dr]) => checkSquare(tFile + df, tRank + dr, ['n']));
// King attacks
for (let df = -1; df <= 1; df++) {
for (let dr = -1; dr <= 1; dr++) {
if (df === 0 && dr === 0) continue;
checkSquare(tFile + df, tRank + dr, ['k']);
}
}
// Sliding pieces (rook, bishop, queen)
const directions = [
{ dx: 1, dy: 0, pieces: ['r', 'q'] }, // right
{ dx: -1, dy: 0, pieces: ['r', 'q'] }, // left
{ dx: 0, dy: 1, pieces: ['r', 'q'] }, // up
{ dx: 0, dy: -1, pieces: ['r', 'q'] }, // down
{ dx: 1, dy: 1, pieces: ['b', 'q'] }, // diagonal
{ dx: 1, dy: -1, pieces: ['b', 'q'] },
{ dx: -1, dy: 1, pieces: ['b', 'q'] },
{ dx: -1, dy: -1, pieces: ['b', 'q'] }
];
directions.forEach(({ dx, dy, pieces }) => {
let f = tFile + dx;
let r = tRank + dy;
while (f >= 0 && f <= 7 && r >= 1 && r <= 8) {
const sq = 'abcdefgh'[f] + r;
const ch = fenCharAtSquare(fen, sq);
if (ch) {
const piece = pieceFromFenChar(ch);
if (piece && piece.color === attackerColor && pieces.includes(piece.type)) {
attackers.push({ square: sq, piece: piece.type });
}
break; // Blocked
}
f += dx;
r += dy;
}
});
return attackers;
}
// Check if square is attacked by opponent
function isSquareAttackedBy(fen, square, attackerColor) {
return getAttackersOfSquare(fen, square, attackerColor).length > 0;
}
// Find king position
function findKing(fen, color) {
const placement = fen.split(' ')[0];
const ranks = placement.split('/');
const kingChar = color === 'w' ? 'K' : 'k';
for (let rankIdx = 0; rankIdx < 8; rankIdx++) {
const rank = 8 - rankIdx;
let file = 0;
for (const ch of ranks[rankIdx]) {
if (/\d/.test(ch)) {
file += parseInt(ch, 10);
} else {
if (ch === kingChar) {
return 'abcdefgh'[file] + rank;
}
file++;
}
}
}
return null;
}
// Simple FEN after move simulation (for king safety check)
function makeSimpleMove(fen, from, to) {
const parts = fen.split(' ');
const placement = parts[0];
const ranks = placement.split('/');
const fromFile = 'abcdefgh'.indexOf(from[0]);
const fromRank = parseInt(from[1], 10);
const toFile = 'abcdefgh'.indexOf(to[0]);
const toRank = parseInt(to[1], 10);
if (fromFile < 0 || toFile < 0 || fromRank < 1 || toRank < 1) return fen;
const fromRowIdx = 8 - fromRank;
const toRowIdx = 8 - toRank;
const movingPiece = fenCharAtSquare(fen, from);
if (!movingPiece) return fen;
// Remove piece from 'from' square
let fromRow = ranks[fromRowIdx];
let fromCol = 0;
let newFromRow = '';
let emptyCount = 0;
for (const ch of fromRow) {
if (/\d/.test(ch)) {
const spaces = parseInt(ch, 10);
if (fromCol + spaces > fromFile) {
// Our square is in this empty span
const before = fromFile - fromCol;
const after = spaces - before - 1;
if (before > 0) newFromRow += before;
emptyCount = 1; // This square is now empty
if (after > 0) newFromRow += after;
fromCol += spaces;
} else {
newFromRow += ch;
fromCol += spaces;
}
} else {
if (fromCol === fromFile) {
emptyCount = 1; // Replace piece with empty
} else {
if (emptyCount > 0) {
newFromRow += emptyCount;
emptyCount = 0;
}
newFromRow += ch;
}
fromCol++;
}
}
if (emptyCount > 0) newFromRow += emptyCount;
// Compress consecutive digits
newFromRow = newFromRow.replace(/(\d)(\d)/g, (m, a, b) => parseInt(a) + parseInt(b));
ranks[fromRowIdx] = newFromRow;
// Place piece on 'to' square
let toRow = ranks[toRowIdx];
let toCol = 0;
let newToRow = '';
for (const ch of toRow) {
if (/\d/.test(ch)) {
const spaces = parseInt(ch, 10);
if (toCol + spaces > toFile) {
const before = toFile - toCol;
const after = spaces - before - 1;
if (before > 0) newToRow += before;
newToRow += movingPiece; // Place moving piece
if (after > 0) newToRow += after;
toCol += spaces;
} else {
newToRow += ch;
toCol += spaces;
}
} else {
if (toCol === toFile) {
newToRow += movingPiece; // Replace whatever was there
} else {
newToRow += ch;
}
toCol++;
}
}
ranks[toRowIdx] = newToRow;
parts[0] = ranks.join('/');
return parts.join(' ');
}
// Main premove safety check
function checkPremoveSafety(fen, uci, ourColor) {
if (!fen || !uci || uci.length < 4) {
return { safe: false, reason: 'Invalid move', riskLevel: 100 };
}
const from = uci.substring(0, 2);
const to = uci.substring(2, 4);
const oppColor = ourColor === 'w' ? 'b' : 'w';
const movingCh = fenCharAtSquare(fen, from);
const movingPiece = pieceFromFenChar(movingCh);
if (!movingPiece || movingPiece.color !== ourColor) {
return { safe: false, reason: 'Not our piece', riskLevel: 100 };
}
const destCh = fenCharAtSquare(fen, to);
const destPiece = pieceFromFenChar(destCh);
let riskLevel = 0;
const reasons = [];
// Check 1: King safety (critical)
if (movingPiece.type === 'k') {
if (isSquareAttackedBy(fen, to, oppColor)) {
return { safe: false, reason: 'King moves into check', riskLevel: 100 };
}
} else {
// Check if move exposes our king
const newFen = makeSimpleMove(fen, from, to);
const kingPos = findKing(newFen, ourColor);
if (kingPos && isSquareAttackedBy(newFen, kingPos, oppColor)) {
return { safe: false, reason: 'Exposes king to check', riskLevel: 100 };
}
}
// Check 2: Don't hang the queen
if (movingPiece.type === 'q') {
const attackers = getAttackersOfSquare(fen, to, oppColor);
if (attackers.length > 0) {
// Queen moving to attacked square
const hasDefender = getAttackersOfSquare(fen, to, ourColor).length > 1; // >1 because queen itself
if (!hasDefender || !destPiece) {
return { safe: false, reason: 'Hangs queen', riskLevel: 90 };
}
}
}
// Check 3: Don't hang rook for nothing
if (movingPiece.type === 'r') {
const attackers = getAttackersOfSquare(fen, to, oppColor);
if (attackers.length > 0) {
const captureValue = destPiece ? PIECE_VALUES[destPiece.type] : 0;
if (captureValue < PIECE_VALUES.r) {
const hasDefender = getAttackersOfSquare(fen, to, ourColor).length > 1;
if (!hasDefender) {
reasons.push('Hangs rook');
riskLevel += 60;
}
}
}
}
// Check 4: Destination square safety
const destAttackers = getAttackersOfSquare(fen, to, oppColor);
if (destAttackers.length > 0 && !destPiece) {
// Moving to attacked empty square
const defenders = getAttackersOfSquare(fen, to, ourColor).length;
if (defenders === 0) {
reasons.push('Moves to undefended attacked square');
riskLevel += 30;
} else if (destAttackers.length > defenders) {
reasons.push('Moves to heavily attacked square');
riskLevel += 20;
}
}
// Check 5: Unfavorable trades
if (destPiece && destPiece.color === oppColor) {
const ourValue = PIECE_VALUES[movingPiece.type];
const theirValue = PIECE_VALUES[destPiece.type];
const destAttackers = getAttackersOfSquare(fen, to, oppColor);
if (destAttackers.length > 0 && ourValue > theirValue) {
reasons.push(`Bad trade: ${movingPiece.type} for ${destPiece.type}`);
riskLevel += 25;
}
}
const safe = riskLevel < 50;
const reason = reasons.length > 0 ? reasons.join(', ') : (safe ? 'Move appears safe' : 'Move risky');
return { safe, reason, riskLevel };
}
// Should we premove this UCI for the given FEN (mode-aware)
function shouldPremove(uci, fen) {
if (!uci || uci.length < 4) return false;
const game = getGame();
const ourColor = getPlayerColor(game);
const from = uci.substring(0, 2);
const to = uci.substring(2, 4);
const fromCh = fenCharAtSquare(fen, from);
const toCh = fenCharAtSquare(fen, to);
const fromPiece = pieceFromFenChar(fromCh);
const toPiece = pieceFromFenChar(toCh);
if (!fromPiece || fromPiece.color !== ourColor) return false;
if (BotState.premoveMode === 'every') return true;
if (BotState.premoveMode === 'capture') {
return !!(toPiece && toPiece.color !== ourColor) || isEnPassantCapture(fen, from, to, ourColor);
}
if (BotState.premoveMode === 'filter') {
return !!BotState.premovePieces[fromPiece.type];
}
return false;
}
// Calculate premove confidence based on position evaluation
function getEvalBasedPremoveChance(evaluation, ourColor) {
if (!BotState.premoveEnabled) return 0;
const game = getGame();
if (!game || isPlayersTurn(game)) return 0;
let evalScore = 0;
if (typeof evaluation === 'string') {
if (evaluation === '-' || evaluation === 'Error') return 0;
if (evaluation.includes('M')) {
const mateNum = parseInt(evaluation.replace('M', '').replace('+', ''), 10);
if (!isNaN(mateNum)) {
// Mate is always from White's perspective from engine
// Positive mate = White winning, Negative = Black winning
const ourMate = ourColor === 'w' ? mateNum : -mateNum;
return ourMate > 0 ? 100 : 20;
}
}
evalScore = parseFloat(evaluation);
} else {
evalScore = parseFloat(evaluation);
}
if (isNaN(evalScore)) return 0;
// Engine eval is from White's perspective
// Convert to our perspective
const ourEval = ourColor === 'w' ? evalScore : -evalScore;
if (ourEval >= 3.0) return 90;
if (ourEval >= 2.0) return 75;
if (ourEval >= 1.0) return 50;
if (ourEval >= 0.5) return 35;
if (ourEval >= 0) return 25;
return 20;
}
// Tick loop
function tick() {
if (!BotState.hackEnabled) return;
const game = getGame();
if (!game) return;
if (game.isGameOver && game.isGameOver()) {
BotState.currentEvaluation = 'GAME OVER';
BotState.bestMove = '-';
BotState.principalVariation = 'Game ended';
BotState.statusInfo = 'Game finished';
clearArrows();
ui.updateDisplay(pa());
return;
}
const fen = getFen(game);
if (!fen) return;
if (fen !== lastFenSeen) {
lastFenSeen = fen;
cancelPendingMove();
clearArrows();
lastPremoveFen = '';
lastPremoveUci = '';
}
if (isPlayersTurn(game)) {
if (lastFenProcessedMain !== fen) {
scheduleAnalysis('main', fen);
}
} else {
if (BotState.premoveEnabled) {
if (lastFenProcessedPremove !== fen) {
scheduleAnalysis('premove', fen);
} else {
// Pass ourColor when updating premove chance display
const chanceEl = qs('[name="premoveChance"] .itemState');
if (chanceEl && BotState.currentEvaluation && BotState.currentEvaluation !== '-') {
const ourColor = getPlayerColor(game);
const currentChance = getEvalBasedPremoveChance(BotState.currentEvaluation, ourColor);
chanceEl.textContent = `${Math.round(currentChance)}%`;
}
BotState.statusInfo = (lastPremoveUci && lastPremoveFen === fen) ? 'Waiting (premove ready)...' : 'Waiting for opponent...';
ui.updateDisplay(pa());
}
} else {
const chanceEl = qs('[name="premoveChance"] .itemState');
if (chanceEl) chanceEl.textContent = '0%';
BotState.statusInfo = 'Waiting for opponent...';
ui.updateDisplay(pa());
}
}
}
function startTickLoop() {
stopTickLoop();
const interval = Math.max(150, 1100 - (Number(BotState.updateSpeed) || 8) * 100);
tickTimer = setInterval(tick, interval);
tick();
}
function stopTickLoop() {
if (tickTimer) clearInterval(tickTimer);
tickTimer = null;
}
// Game auto-end detection and auto-rematch watchers
function startAutoWatchers() {
if (gameStartInterval) clearInterval(gameStartInterval);
if (gameEndInterval) clearInterval(gameEndInterval);
let gameEndDetected = false;
gameEndInterval = setInterval(() => {
const gameOverModal = qs('.game-over-modal-content');
if (gameOverModal && !gameEndDetected) {
console.log('GabiBot: Game over detected');
clearArrows();
cancelPendingMove();
BotState.statusInfo = 'Game ended, preparing new game...';
BotState.currentEvaluation = '-';
BotState.bestMove = '-';
ui?.updateDisplay(pa());
gameEndDetected = true;
if (BotState.autoRematch) {
console.log('GabiBot: Auto-rematch enabled');
setTimeout(() => {
const modal = qs('.game-over-modal-content');
if (!modal) return console.log('GabiBot: [2s] Modal closed, game started');
const btn = qsa('button', modal).find(b =>
/rematch/i.test((b.textContent || '').trim()) ||
/rematch/i.test((b.getAttribute?.('aria-label') || '').trim())
);
if (btn) {
console.log('GabiBot: [2s] ✅ Clicking Rematch');
btn.click();
} else {
console.log('GabiBot: [2s] No Rematch button');
}
}, 2000);
setTimeout(() => {
const modal = qs('.game-over-modal-content');
if (!modal) return console.log('GabiBot: [12s] Modal closed, game started');
const btn = qsa('button', modal).find(b => {
const text = (b.textContent || '').replace(/\s+/g, ' ').trim();
return /new.*\d+.*min/i.test(text);
});
if (btn) {
console.log(`GabiBot: [12s] ✅ Clicking "${btn.textContent.trim()}"`);
btn.click();
} else {
console.log('GabiBot: [12s] No "New X min" button');
}
}, 12000);
setTimeout(async () => {
const modal = qs('.game-over-modal-content');
if (!modal) return console.log('GabiBot: [22s] Modal closed, game started');
console.log('GabiBot: [22s] Using New Game tab fallback');
const closeBtn = qs('[aria-label="Close"]', modal);
if (closeBtn) {
closeBtn.click();
await sleep(500);
}
const tab = qs('[data-tab="newGame"]') ||
qsa('.tabs-tab').find(t => /new.*game/i.test(t.textContent || ''));
if (tab) {
console.log('GabiBot: [22s] Clicking New Game tab');
tab.click();
await sleep(400);
const startBtn = qsa('button').find(b =>
/start.*game/i.test((b.textContent || '').trim())
);
if (startBtn) {
console.log('GabiBot: [22s] ✅ Clicking Start Game');
startBtn.click();
} else {
console.log('GabiBot: [22s] ❌ Start Game not found');
}
} else {
console.log('GabiBot: [22s] ❌ New Game tab not found');
}
}, 22000);
}
}
if (!gameOverModal && gameEndDetected) {
console.log('GabiBot: New game started, bot analyzing...');
gameEndDetected = false;
if (BotState.hackEnabled) {
BotState.statusInfo = 'Ready';
ui?.updateDisplay(pa());
setTimeout(() => {
if (BotState.hackEnabled) tick();
}, 500);
}
}
}, 1000);
}
// Draggable panel
function makePanelDraggable(panel) {
function clampToViewport() {
const rect = panel.getBoundingClientRect();
const vw = window.innerWidth;
const vh = window.innerHeight;
const margin = 8;
panel.style.right = 'auto';
let left = parseFloat(panel.style.left || rect.left);
let top = parseFloat(panel.style.top || rect.top);
left = Math.max(margin, Math.min(left, vw - rect.width - margin));
top = Math.max(margin, Math.min(top, vh - rect.height - margin));
panel.style.left = left + 'px';
panel.style.top = top + 'px';
}
function allowDragFromTarget(target, e) {
if (e.altKey) return true;
const rect = panel.getBoundingClientRect();
const m = 14;
const nearEdge =
e.clientX <= rect.left + m ||
e.clientX >= rect.right - m ||
e.clientY <= rect.top + m ||
e.clientY >= rect.bottom - m;
if (nearEdge) return true;
if (target.closest('input, select, textarea, button, label, a')) return false;
return true;
}
function startDrag(e) {
e.preventDefault();
const startRect = panel.getBoundingClientRect();
panel.classList.add('grabbing');
panel.style.right = 'auto';
panel.style.left = startRect.left + 'px';
panel.style.top = startRect.top + 'px';
const startX = e.clientX;
const startY = e.clientY;
const move = (ev) => {
const dx = ev.clientX - startX;
const dy = ev.clientY - startY;
const vw = window.innerWidth;
const vh = window.innerHeight;
let newLeft = startRect.left + dx;
let newTop = startRect.top + dy;
const margin = 8;
const maxLeft = Math.max(margin, vw - startRect.width - margin);
const maxTop = Math.max(margin, vh - startRect.height - margin);
newLeft = Math.min(Math.max(newLeft, margin), maxLeft);
newTop = Math.min(Math.max(newTop, margin), maxTop);
panel.style.left = newLeft + 'px';
panel.style.top = newTop + 'px';
};
const up = () => {
document.removeEventListener('mousemove', move);
document.removeEventListener('mouseup', up);
panel.classList.remove('grabbing');
try { ui?.Settings.save?.(); } catch { }
};
document.addEventListener('mousemove', move);
document.addEventListener('mouseup', up);
}
panel.addEventListener('mousedown', (e) => {
if (e.button !== 0) return;
if (!allowDragFromTarget(e.target, e)) return;
startDrag(e);
});
window.addEventListener('resize', clampToViewport);
setTimeout(clampToViewport, 50);
}
// Kick off
setTimeout(init, 3000);
})();