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S-House S-House

S-House is a custom variant combining the rules of S chess (AKA Seirawan or SHARPER chess) with the drop rules of Crazyhouse. The same rules apply to both games. As this is considered a derivative of S chess, please check the rules in its separate guide. Crazyhouse rules are as below for a reminder.

Crazyhouse Rules

Drops can be performed with captured pieces, which would be done in lieu of moving a piece on the board. Drops are annotated with @. So for example,R@e4 means rook drop at e4. The rules for dropping pieces are as follows:

Clarifications

The elephant and hawk are also counted as pieces in hand, so they are able to be dropped on the board starting from the beginning.

Strategy

As in standard crazyhouse, the piece values don't align with the chess piece values, and as in standard crazyhouse, sacrificing material for fast development, attacks on the enemy King, or just for defence, are often wise. Sometimes it is better to reinforce defenders around one's King rather than try to save them. Here we may refer you to sources in standard crazyhouse strategy…