v1.0.24

Search

• Singular extensions — extend search for hash moves that are significantly better than all alternatives
• Probcut pruning — at high depth, shallow search with raised beta to cut obviously winning positions
• Multi-cut pruning — if multiple moves fail high at shallow depth, assume beta cutoff
• Hash table prefetching — prefetch TT entries into CPU cache after making a move
• ArrayVec in quiesce — stack-allocated move lists in quiescence search

Evaluation

• Knight blockade penalty — penalty when enemy knight controls passed pawn's promotion square
• King activity bonuses — king attacks on minor pieces and rooks in endgames
• King mobility bonus — bonus per safe king square in endgames
• Blocked passed pawn penalty — penalty when enemy king guards promotion square

Performance

• Cached gives_check, is_end_game, and hash hit results to avoid redundant computation
• Reordered is_draw checks for short-circuit optimization
• Moved end_time calculation before clone/spawn to prevent tournament timeouts

UCI

• Added configurable Hash size option
• Added go searchmoves command support
• SPSA parameter tuning applied (multiple iterations)