"Board upside down": "Board upside down",
"Both sides of the mirror": "Both sides of the mirror",
"Capture all of a kind": "Capture all of a kind",
+ "Capture en passant": "Capture en passant",
"Captures reborn": "Captures reborn",
"Change colors": "Change colors",
"Dangerous collisions": "Dangerous collisions",
"Keep antiking in check": "Keep antiking in check",
"Laws of attraction": "Laws of attraction",
"Lose all pieces": "Lose all pieces",
+ "Mate any piece": "Mate any piece",
"Move twice": "Move twice",
"Pawns move diagonally": "Pawns move diagonally",
+ "Reuse pieces": "Reuse pieces",
"Reverse captures": "Reverse captures",
"Shared pieces": "Shared pieces",
"Standard rules": "Standard rules"