Where blundering is a strategy!

Blunderchess follows the rules of normal chess, with one twist: at certain points, you get to play for your opponent and try to make them blunder.

Player 1 is trying to win as White, and Player 2 is trying to win as Black. The turn order is five normal moves followed by two blunder-for-opponent moves:

1. Player 1 plays for White
2. Player 2 plays for Black
3. Player 1 plays for White
4. Player 2 plays for Black
5. Player 1 plays for White
6. Player 1 plays for Black (attempting to make Black blunder)
7. Player 2 plays for White (attempting to make White blunder)
8. Player 2 plays for Black
9. Player 1 plays for White
10. Player 2 plays for Black
11. Player 1 plays for White
12. Player 2 plays for Black
13. Player 2 plays for White (attempting to make White blunder)
14. Player 1 plays for Black (attempting to make Black blunder)

This cycle continues throughout the game, forcing players to balance good moves with sabotage when given control of their opponent’s pieces.