2 After each normal move, push an opponent pawn one square forward.
3 If the pawn promotes, its owner will select into which piece on next turn.
6 <p>The goal is either to checkmate or to capture the enemy king.
</p>
8 <a href=
"https://www.chessvariants.com/mvopponent.dir/avalanche.html">
12 <p class=
"author">Ralph Betza (
1977).
</p>