Syzygy endgame tablebases
White to move
Black to move
JavaScript required for interactive board view.
Tablebase draw
Qb3+
Draw
Qxb5+
Draw
Qf5+
Loss with DTZ 27
Qd3+
Loss with DTZ 9
Qc4
Loss with DTZ 7
Qf7
Loss with DTZ 7
Qc5
Loss with DTZ 5
Qd7
Loss with DTZ 3
Qh5
Loss with DTZ 3
Qd2
Loss with DTZ 2
Kd2
Loss with DTZ 1
Qa2+
Loss with DTZ 1
Qc6
Loss with DTZ 1
Qd4
Loss with DTZ 1
Qd6
Loss with DTZ 1
Qd8
Loss with DTZ 1
Qe4+
Loss with DTZ 1
Qe5
Loss with DTZ 1
Qe6
Loss with DTZ 1
Qf3
Loss with DTZ 1
Qg2
Loss with DTZ 1
Qg5
Loss with DTZ 1
Qh1
Loss with DTZ 1
Qxb7
Zeroing
Qxg8
Zeroing
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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