Syzygy endgame tablebases

Black is winning DTZ 181

Qh1 Win with DTZ 180

Qe3+ Draw Qe5+ Draw Qf2+ Draw Qg1+ Draw

Qe7+ Loss with DTZ 4 Nb2 Loss with DTZ 1 Nc3 Loss with DTZ 1 Ne3 Loss with DTZ 1 Nf2 Loss with DTZ 1 Qc3+ Loss with DTZ 1 Qd2 Loss with DTZ 1 Qe2 Loss with DTZ 1 Qe4 Loss with DTZ 1 Qe6 Loss with DTZ 1 Qe8 Loss with DTZ 1 Qf1 Loss with DTZ 1 Qg3 Loss with DTZ 1 Qh4 Loss with DTZ 1 Ke7 Loss with DTZ 1 Kg7 Loss with DTZ 1 Kg8 Loss with DTZ 1 Qxb4+ Zeroing

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

KBBPvKQN.pgn lichess.org

Histogram: KBBP losing vs. KQN (log scale)

Longest KBBPvKQN phases

KBBPvKQN statistics (unique positions)

White wins:
195,766,709,658 (13.6%)

Frustrated white wins:
6,760,650,592 (0.5%)

Draws:
145,276,593,640 (10.1%)

Frustrated black wins:
3,046,461,498 (0.2%)

Black wins:
1,091,743,510,452 (75.7%)

KBBPvKQN.json (?)

KBBPvKQN dependencies

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

KQBBvKQN · KBBPvKN · KRBBvKQN · KBBBvKQN · KQNvKBP · KBBNvKQN · KBBPvKQ · KQNvKBB

KBBPvKQN.txt KBBPvKQN.dot