Syzygy endgame tablebases

Black is losing with DTZ 112

Ne7+ Loss with DTZ 111

Na7+ Loss with DTZ 3 Nb6 Loss with DTZ 1 Nd6 Loss with DTZ 1 Ke4 Loss with DTZ 1 a3 Zeroing axb3 Zeroing

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

KQBBvKNP.pgn lichess.org

Histogram: KQBB winning vs. KNP (log scale)

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Longest KQBBvKNP phases

KQBBvKNP statistics (unique positions)

White wins:
1,366,934,272,146 (92.2%)

Frustrated white wins:
11,818,327,478 (0.8%)

Draws:
95,874,422,574 (6.5%)

Frustrated black wins:
178,983,840 (0.0%)

Black wins:
7,875,056,538 (0.5%)

KQBBvKNP.json (?)

KQBBvKNP dependencies

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

KQBBvKQN · KBBvKNP · KQBBvKRN · KQBBvKBN · KQBvKNP · KQBBvKNN · KQBBvKP · KQBBvKN

KQBBvKNP.txt KQBBvKNP.dot