Xess.io

Xess.io is massively multiplayer extreme chess! A competitive chess variant played on a 64x64 board with up to 10 AI bots, 0.5s timers per move, and chaos. Chess reinvented for the IO era.

How to Play

Classic chess rules, but on a much larger board with more players/bots and time pressure. Each side has king, queen, pieces — but positioning on the huge board changes everything. Capture the enemy king to win.

Controls

• Click — select piece
• Click destination — move
• Right click — cancel selection

Game Modes

• 64x64 board — massive chess arena
• Vs AI bots — adjustable difficulty
• 0.5s timer — lightning-fast moves
• Multiplayer — against other humans

Features

• Extreme chess variant — unique rules
• Fast-paced — no long thinking
• Leaderboards — compete globally
• Learn more section — chess tips and strategies

Tips

• Piece activity matters more than captures on big boards
• Use time pressure to force opponents into mistakes
• Don't over-plan — 0.5s forces intuition
• Study chess basics — fundamentals apply
• Practice vs AI before going multiplayer