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+p.boxed
+ | A normal move is always followed by an opponent's pawn push.
+
+p.
+ Each turn consists of two parts. The first part is a move
+ legal with the orthodox chess rules. The second part of the move,
+ called "push", consists of moving an opponent's pawn a single space forward
+ (toward the player in turn).
+ White has no pawn push on the first move ("balanced" Avalanche).
+
+p.
+ If no pawn can advance at the second part, then it's
+ opponent's turn. If a pushed pawn reaches its last rank,
+ the opponent decides next in which piece it promotes.
+
+figure.diagram-container
+ .diagram.diag12
+ | fen:rnbqkbnr/1pppp1pp/8/p7/P3Pp2/8/1PPPKPPP/RNBQ1BNR:
+ .diagram.diag22
+ | fen:rnbqkbnr/1pppp1pp/8/p7/P3P3/2N2p2/1PPPKPPP/R1BQ1BNR:
+ figcaption.
+ White plays Nc3,f3 (bad idea). Then Black can capture the king.
+
+p In some cases, kings can be captured. This counts as a win.
+
+p There are no en-passant captures.
+
+h3 More information
+
+p
+ | See
+ a(href="https://www.chessvariants.com/mvopponent.dir/avalanche.html")
+ | Avalanche Chess
+ | on chessvariants.com.