Syzygy endgame tablebases

Black is losing with DTZ 373

Qf7 Loss with DTZ 372

Qf2 Loss with DTZ 51 Qf6 Loss with DTZ 51 Qc8 Loss with DTZ 39 Qe7 Loss with DTZ 39 Qh8 Loss with DTZ 39 Qg8 Loss with DTZ 23 Qb8 Loss with DTZ 19 Ka7 Loss with DTZ 1 Kb7 Loss with DTZ 1 Kb8 Loss with DTZ 1 Qd6 Loss with DTZ 1 Qd8 Loss with DTZ 1 Qe8+ Loss with DTZ 1 Qf1 Loss with DTZ 1 Qf3 Loss with DTZ 1 Qf4+ Loss with DTZ 1 Qf5 Loss with DTZ 1 Qxc5 Zeroing Qxg7 Zeroing

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

KBNNPvKQ.pgn lichess.org

Histogram: KBNNP winning vs. KQ (log scale)

Longest KBNNPvKQ phases

KBNNPvKQ statistics (unique positions)

White wins:
507,604,688,538 (34.3%)

Frustrated white wins:
1,463,760,972 (0.1%)

Draws:
493,925,114,848 (33.4%)

Frustrated black wins:
4,355,724,848 (0.3%)

Black wins:
471,060,524,488 (31.9%)

KBNNPvKQ.json (?)

KBNNPvKQ dependencies

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

KQBNNvKQ · KBNNPvK · KRBNNvKQ · KBBNNvKQ · KNNPvKQ · KBNNNvKQ · KBNPvKQ · KBNNvKQ

KBNNPvKQ.txt KBNNPvKQ.dot