If the side to move has no legal move, the game is drawn
Castling is removed
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Swap moves a pawn and one friendly piece
Shift moves only the pawn
Material stays unchanged: Spark Moves exclude captures and promotions
In notation, a Spark Move uses the>(greater-than) sign
The pieces are the king, queen, rook, bishop and knight
Only friendly pieces participate in the move
A pawn moves in every Spark Move
A pair of pieces protects the interaction square
♙
A regular pawn move is one square forward
A Spark Move lifts the forward-only restriction
A pawn may use any rank except the promotion rank
Allowed area
White
ranks 1–7
Black
ranks 2–8
½–½
The first repetition of a position is a draw
The 50-move rule is removed
Automatic endgame draws
Two bare kings immediately draw if they are not adjacent. Adjacent kings continue playing.
King and one bishop or knight against a lone king immediately draw when the kings are not adjacent, the minor piece does not attack the lone king, and the lone king is outside the danger zone.
Bishop danger zone: all edge squares, plus b2, g2, b7, g7.
