Syzygy endgame tablebases

Black is losing with DTZ 110

Bc5+ Loss with DTZ 109 Bxh3 Zeroing

Bb2 Loss with DTZ 1 Bb4 Loss with DTZ 1 Bc1 Loss with DTZ 1 Bd6 Loss with DTZ 1 Be7 Loss with DTZ 1 Bf8 Loss with DTZ 1 Ka4 Loss with DTZ 1 Kb4 Loss with DTZ 1 Kb5 Loss with DTZ 1 Ba4 Loss with DTZ 1 Bb5 Loss with DTZ 1 Bc6 Loss with DTZ 1 Bc8 Loss with DTZ 1 Be6 Loss with DTZ 1 Be8 Loss with DTZ 1 Bf5 Loss with DTZ 1 Bg4 Loss with DTZ 1 Kxa6 Zeroing Kxb6 Zeroing

This is a blessed loss. Mate can be forced, but a draw can be achieved under the fifty-move rule.

KQPPvKBB.pgn lichess.org

Histogram: KQPP winning vs. KBB (log scale)

⋮

Longest KQPPvKBB phases

KQPPvKBB statistics (unique positions)

White wins:
965,886,817,340 (87.0%)

Frustrated white wins:
507,176,608 (0.0%)

Draws:
88,654,814,836 (8.0%)

Frustrated black wins:
3,112,556 (0.0%)

Black wins:
54,877,324,780 (4.9%)

KQPPvKBB.json (?)

KQPPvKBB dependencies

To probe all KQPPvKBB positions, these tables and their transitive dependencies are also required:

KQQPvKBB · KBBvKPP · KQRPvKBB · KQBPvKBB · KQPPvKB · KQNPvKBB · KQPvKBB

KQPPvKBB.txt KQPPvKBB.dot