| 1 | p.boxed |
| 2 | | A normal move is always followed by an opponent's pawn push. |
| 3 | |
| 4 | p. |
| 5 | Each turn consists of two parts. The first part is a move |
| 6 | legal with the orthodox chess rules. The second part of the move, |
| 7 | called "push", consists of moving an opponent's pawn a single space forward |
| 8 | (toward the player in turn). |
| 9 | White has no pawn push on the first move ("balanced" Avalanche). |
| 10 | |
| 11 | p. |
| 12 | If no pawn can advance at the second part, then it's |
| 13 | opponent's turn. If a pushed pawn reaches its last rank, |
| 14 | the opponent decides next in which piece it promotes. |
| 15 | |
| 16 | figure.diagram-container |
| 17 | .diagram.diag12 |
| 18 | | fen:rnbqkbnr/1pppp1pp/8/p7/P3Pp2/8/1PPPKPPP/RNBQ1BNR: |
| 19 | .diagram.diag22 |
| 20 | | fen:rnbqkbnr/1pppp1pp/8/p7/P3P3/2N2p2/1PPPKPPP/R1BQ1BNR: |
| 21 | figcaption. |
| 22 | White plays Nc3,f3 (bad idea). Then Black can capture the king. |
| 23 | |
| 24 | p In some cases, kings can be captured. This counts as a win. |
| 25 | |
| 26 | p There are no en-passant captures. |
| 27 | |
| 28 | h3 More information |
| 29 | |
| 30 | p |
| 31 | | See |
| 32 | a(href="https://www.chessvariants.com/mvopponent.dir/avalanche.html") |
| 33 | | Avalanche Chess |
| 34 | | on chessvariants.com. |
| 35 | |
| 36 | p Inventor: Ralph Betza (1977) |