immobilityIllegal = true
mandatoryPiecePromotion = true
+# Cross derby
+# Pawns promote to a knight on the 8th rank. Checkmate or stalemate your opponent to win the game.
+# https://www.chess.com/variants/cross-derby
+[crossderby:chess]
+queen = -
+rook = -
+bishop = -
+startFen = n*nnnn*k/**pppp**/pp4pp/8/8/PP4PP/**PPPP**/K*NNNN*N w - - 0 1
+stalemateValue = loss
+
+# Elimination chess
+# Eliminate all the opponents' pieces but one to win. No checkmates, capturing is compulsory
+# https://www.chess.com/variants/elimination-chess
+[elimination:giveaway]
+extinctionValue = loss
+stalemateValue = loss
+extinctionPieceCount = 1