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This page is written by the game's inventor, Iwer Sonsch.

Decisive Chess

Decisive Chess is played like chess, but for any way the game can end, a winner is found.


1. If the game ends by checkmate, the checkmating player wins.

2. If the game ends by stalemate, the stalemating player wins.

3. If a player has only their King left, the other player wins.

4. If the game ends by repetition or the 50 move rule, the player who made the last "significant change" (capture or pawn move) wins.

5. If a player runs out of time, the other player wins.

6. Players may not offer draws.


This variant was made in an attempt to let players, especially chess engines, learn to fight for and convert the slightest of advantages, as more control over the game means more control over how the game ends.

To achieve this, the rules attempt to strictly favor the player with the better position and more control, shaking up as little as possible aside from removing the option to draw, all while remaining as simple and straightforward as the original rules.

This 'user submitted' page is a collaboration between the posting user and the Chess Variant Pages. Registered contributors to the Chess Variant Pages have the ability to post their own works, subject to review and editing by the Chess Variant Pages Editorial Staff.

By Iwer Sonsch.

Last revised by Iwer Sonsch.

Web page created: 2021-06-08. Web page last updated: 2021-06-08