you need to win all the pawns to win the game
kings are not royal
-https://www.chessvariants.com/diffmove.dir/balaklava.html
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Rampage Chess: Any Unit May move to any empty square that is guarded. A King cannot make a special move to get out of check.
+https://www.chessvariants.com/rules/pacifist-chess (1 et 2, utilisant somme values ou nb pièces)
+
Swap chess: Friendly pieces may swap places
https://www.chessvariants.com/crossover.dir/koopachess.html