Syzygy endgame tablebases
White to move
Black to move
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Tablebase draw
Qa6+
Draw
Qe4+
Loss with DTZ 27
Qb5
Loss with DTZ 17
Qc4
Loss with DTZ 17
Ke7
Loss with DTZ 17
Kf7
Loss with DTZ 17
Qh5
Loss with DTZ 16
Qc2
Loss with DTZ 15
Qd2
Loss with DTZ 15
Kd7
Loss with DTZ 15
Kd8
Loss with DTZ 15
Kf8
Loss with DTZ 15
Qf2
Loss with DTZ 13
Qh2
Loss with DTZ 13
Qe6
Loss with DTZ 7
Qe7
Loss with DTZ 5
Qb2
Loss with DTZ 1
Qd1
Loss with DTZ 1
Qd3
Loss with DTZ 1
Qe1
Loss with DTZ 1
Qe3
Loss with DTZ 1
Qe5
Loss with DTZ 1
Qf1
Loss with DTZ 1
Qf3+
Loss with DTZ 1
Qg2+
Loss with DTZ 1
Qg4
Loss with DTZ 1
Qxa2+
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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