- s -
- score : EvalBuilder, Hint, Link, Move, OBF, OkoGame, Position, Result, WthorGame
- search : Book, Engine, Node, Play, Task
- search_log_file : Options
- second : Book, Game
- selectivity : HashData, Hint, Level, Options, Result, Search
- separator : Search
- shallow_table : Search
- size : Base, BoardCache, Event, GameHashTable, GGSMatchType, MoveArray, MoveHash, PosArray, PositionArray, PositionHash, ShapeArray, ShapeHash
- slave : Node
- socket : GGSEvent
- speed : Options
- spent : Play, Search
- spin : Event, HashLock, Result, Search, TaskStack
- stability_bound : Search
- stack : Book, TaskStack
- state : Play
- stats : Book, GameHash
- stop : Search
- stop_point : Node