Transposition Tables

Transposition Tables The transposition table is the engine’s memory of previously analyzed positions. Because the same chess position can be reached through different move orders (transpositions), storing results avoids re-searching identical subtrees — this is one of the biggest speedups in modern engines. Stockfish stores a compact 10-byte entry per position. TTEntry — What is stored Each entry stores just enough info to help pruning and move ordering: struct TTEntry { private: friend class TranspositionTable; uint16_t key16; uint16_t move16; int16_t value16; int16_t eval16; uint8_t genBound8; int8_t depth8; }; C++ Used here Structs in C++ In C++, struct and class are almost identical, with one default difference: ...