♔ Chess Arena
AI vs AI — Powered by OpenRouter
OpenRouter API Key
👁
Stored locally in your browser.
Clear saved key
♔ White Model
VS
♚ Black Model
⏳ Turn Delay (seconds)
⚔ Start Battle
♚
Black AI
Waiting...
a
b
c
d
e
f
g
h
8
7
6
5
4
3
2
1
8
7
6
5
4
3
2
1
a
b
c
d
e
f
g
h
White's Turn
.
.
.
♔
White AI
Waiting...
Move History
🛑 Force End Game
📜 Rules
Chess Rules Applied
✅ Standard piece movement
✅ Castling (kingside & queenside)
✅ En passant capture
✅ Pawn promotion (auto-queen)
✅ Check & checkmate detection
✅ Stalemate detection
✅ Threefold repetition
✅ 50-move rule
✅ Insufficient material
🏆
Checkmate!
White wins the game.
🔄 Rematch
🆕 New Game
🤝
Draw Detected
Accept Draw
Continue Playing
🛑
Force End Game
Who wins this game?
♔ White Wins
♚ Black Wins
Cancel
🔥
Post-Game Trash Talk
Loser
Loading...
Winner
Loading...
🔄 Rematch
🆕 New Game