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