Syzygy endgame tablebases

Black is winning with DTZ 189

Qh4+ Win with DTZ 188

Ke6 Draw Ke8 Draw Kf6 Draw Kf8 Draw Kg6 Draw Kg7 Draw Kg8 Draw Qc1 Draw Qd2+ Draw Qf6+ Draw Qf8 Draw Qg7 Draw Qh1 Draw Qh8 Draw

Qg6 Loss with DTZ 49 Qh3 Loss with DTZ 49 Qh7 Loss with DTZ 49 Qc6 Loss with DTZ 47 Qe6 Loss with DTZ 41 Qa6 Loss with DTZ 37 Qg5 Loss with DTZ 37 Qb6+ Loss with DTZ 1 Qd6 Loss with DTZ 1 Qe3+ Loss with DTZ 1 Qf4+ Loss with DTZ 1 Qh2+ Loss with DTZ 1 Qh5 Loss with DTZ 1

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

KBBNPvKQ.pgn lichess.org

Histogram: KBBNP losing vs. KQ (log scale)

Longest KBBNPvKQ phases

KBBNPvKQ statistics (unique positions)

White wins:
506,802,820,714 (35.2%)

Frustrated white wins:
900,892,110 (0.1%)

Draws:
462,975,616,944 (32.2%)

Frustrated black wins:
14,803,848,966 (1.0%)

Black wins:
452,796,267,834 (31.5%)

KBBNPvKQ.json (?)

KBBNPvKQ dependencies

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

KQBBNvKQ · KBBNPvK · KRBBNvKQ · KBBBNvKQ · KBNPvKQ · KBBNNvKQ · KBBPvKQ · KBBNvKQ

KBBNPvKQ.txt KBBNPvKQ.dot