Syzygy endgame tablebases

Black is winning with DTZ 1

Qxf3 DTM 2 Zeroing Qxh8 DTM 22 Zeroing Kc7+ Win with DTZ 2 Kd7+ Win with DTZ 2 Qa3+ Win with DTZ 2 Qf4 Win with DTZ 2 Qb4 Win with DTZ 4 Qg8 Win with DTZ 4 Qe7 Win with DTZ 8

Qe8 Loss with DTZ 2 Qf5 Loss with DTZ 2 Qf7 Loss with DTZ 2 Qc5 Loss with DTZ 1 Qd6 Loss with DTZ 1 Qd8 Loss with DTZ 1 Qf6 Loss with DTZ 1 Qg7 Loss with DTZ 1

KBBNvKQ.pgn lichess.org

Histogram: KBBN losing vs. KQ (log scale)

Longest KBBNvKQ phases

KBBNvKQ statistics (unique positions)

White wins:
1,872,817,112 (22.6%)

Draws:
2,172,195,024 (26.2%)

Frustrated black wins:
187,643,772 (2.3%)

Black wins:
4,045,559,934 (48.9%)

KBBNvKQ.json (?)

KBBNvKQ dependencies

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

KBBNvK · KBNvKQ · KBBvKQ

KBBNvKQ.txt KBBNvKQ.dot