Syzygy endgame tablebases
White to move
Black to move
JavaScript required for interactive board view.
Tablebase draw
Qb5+
Draw
Qb6+
Draw
Qc7+
Draw
Qc8+
Loss with DTZ 29
Qd6+
Loss with DTZ 29
Qa3
Loss with DTZ 13
Qc2
Loss with DTZ 13
Qh5
Loss with DTZ 13
Qa5
Loss with DTZ 11
Qc4
Loss with DTZ 9
Kd7
Loss with DTZ 9
Qc6
Loss with DTZ 7
Qd5
Loss with DTZ 3
Qg5
Loss with DTZ 3
Qa7+
Loss with DTZ 1
Qb4+
Loss with DTZ 1
Qc1
Loss with DTZ 1
Qc3
Loss with DTZ 1
Qd4
Loss with DTZ 1
Qe3
Loss with DTZ 1
Qe5+
Loss with DTZ 1
Qe7
Loss with DTZ 1
Qf2
Loss with DTZ 1
Qf5
Loss with DTZ 1
Qf8
Loss with DTZ 1
Qg1
Loss with DTZ 1
KRRBNvKQ.pgn
lichess.org
Histogram: KRRBN winning vs. KQ (log scale)
Longest KRRBNvKQ phases
KRRBN winning with DTZ 100
KRRBN winning with DTZ 163 (frustrated)
KRRBN losing with DTZ 31
KRRBNvKQ statistics (unique positions)
White wins:
334,411,661,737 (79.2%)
Frustrated white wins:
58,336,799 (0.0%)
Draws:
81,928,183,430 (19.4%)
Black wins:
5,795,099,484 (1.4%)
KRRBNvKQ.json
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