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Math chess · 2 PLAYERS

Math chess

A Vietnamese strategy game combining chess and arithmetic. Every piece carries a number; use calculations to capture.

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Time per player

10 minutes per player, no increment.

Play while signed in to earn points and join the leaderboard.

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A quick guide to Math chess

Read the Math chess rules

What is Math chess?

Vietnamese Math Chess uses a 9×11 board and ten numbered pieces per side, from 0 to 9. Zero stays still. Arithmetic determines capture distances using a neighbouring friendly support piece; capturing the opposing zero wins.

How can I play with a friend?

Share one device for a local game, or choose the friend option above to create an online room and send its invitation. Online games need an internet connection. Local games are saved in this browser.

Play Math chess on one device

Which rules apply here?

Vũ Văn Bảy Math Chess · capture-zero profile. Read the setup, legal moves, special rules and end conditions before starting. The guide describes the variant used on ChessPlayX, including differences from other versions where relevant.

Read the Math chess rules