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The Chess Variant Pages

This page is written by the game's inventor, Lúcio José Patrocínio Filho. This game is a favorite of its inventor.






Turnover Chess Variant

Languages available: ESPAÑOL | PORTUGUÊS | ENGLISH



Initial Arrangement


Pawn (external ring alone)

Pawn Moves

Pawn, Knight and Castle's Promotion

Pawn Promotion Castle Promotion Knight Promotion Rook Promotion

Bishop (internal ring alone)

Bishop Moves

Rook (central button alone)

Rook Moves

Combined Pieces

Rook Does not match with Pawn

Queen (central button + internal ring)

Queen Moves

Castle (central button + external ring + internal ring)

Castle Move Castle Move

Knight (external ring + internal ring)

Knight Moves


Start Moves

Victory conditions


Check and Checkmate



Turnover match example:

Turnover match example

Simulating a real Castle with pieces. 

It is easy to grab and move pieces and gives better view to the game.

Now is official: Castle in check moves like traditional Chess King.

In this new feature, a Castle is not dismounted when moving, when in check. Instead of launch his outer ring, the whole set moves to get Castle out of check or not if its not possible. This new rule turns the game more similar to traditional chess and allows draw by stalemate, however, it increases exponentially the difficulty to perform checkmate, because in addition to the usual piece moves like chess, we have turnovers and reconfigurations, which amplify our chances of "saving" a Castle in check in a certain way. 

Play Turnover on: GITHUB

Related links:

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You can play Turnover on

Sign up to play Turnover player vs player:


A few details:

Or play Turnover player vs computer at:

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Turnover Chess Variant Notation

Is a system developed to record all moves. As Turnover pieces have "turnover" special ability, some changes on algebraic notation are needed.

Naming pieces

Moves are indicated by point (.). By the way, for lonely pieces, indicate moves with point is not needed. Ex.: Be5, e5, Ra5


Moves resulting in combining friendly pieces:

This name defines a special ability's to take opponent's pieces without removing them from board. This move is called turnover.
When a player performs a turnover, this move is indicated with two points (:).

Combining pieces of same color is not considered a turnover, so these kinds of movements are not indicated by two points, but just by its final result. This difference is needed because a turnover is considered a valid move to reset 50 moves’ rule.  


Takes are indicated by letter x.



Check, Mate and Draw

End game


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 Lúcio José Patrocínio Filho.

Last revised by Lúcio José Patrocínio Filho.

Web page created: 2019-06-24. Web page last updated: 2019-06-24