"Queen versus pawns": "Queen versus pawns",
"Reach the last rank (v1)": "Reach the last rank (v1)",
"Reach the last rank (v2)": "Reach the last rank (v2)",
+ "Replace pieces": "Replace pieces",
"Reposition pieces": "Reposition pieces",
"Reuse pieces": "Reuse pieces",
"Reverse captures": "Reverse captures",
"Shared pieces (v2)": "Shared pieces (v2)",
"Shogi 5 x 5": "Shogi 5 x 5",
"Shoot pieces": "Shoot pieces",
+ "Spartan versus Persians": "Spartan versus Persians",
"Squares disappear": "Squares disappear",
"Squat last rank": "Squat last rank",
"Standard rules": "Standard rules",