Syzygy endgame tablebases
White to move
Black to move
JavaScript required for interactive board view.
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
Qh6
Draw
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
KBBN winning with DTZ 23
KBBN losing with DTZ 190 (frustrated)
KBBN losing with DTZ 100
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
(?)