Op1 Partial 8-Piece Tablebase Available
Summary
Lichess announces the Op1 partial 8-piece tablebase, expanding practical endgame coverage to include 8-piece positions with opposing pawn pairs. The post explains the op1 concept, its generation workflow, and the scale of data (63 TiB) involved, along with practical examples and plans for future expansions (op2, 9-piece scenarios).