Syzygy endgame tablebases
White to move
Black to move
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Tablebase draw
Rc2+
Draw
Qd6+
Draw
Qxe3+
Draw
Qxh4
Draw
Qg2+
Loss with DTZ 15
Qg8
Loss with DTZ 3
Ra4
Loss with DTZ 1
Rb4
Loss with DTZ 1
Rc1
Loss with DTZ 1
Rc3
Loss with DTZ 1
Rc5
Loss with DTZ 1
Rc6
Loss with DTZ 1
Rd4+
Loss with DTZ 1
Re4
Loss with DTZ 1
Rf4
Loss with DTZ 1
Rg4
Loss with DTZ 1
Kb7
Loss with DTZ 1
Kb8
Loss with DTZ 1
Kc8
Loss with DTZ 1
Kd6
Loss with DTZ 1
Qe1+
Loss with DTZ 1
Qe5
Loss with DTZ 1
Qf2+
Loss with DTZ 1
Qf3
Loss with DTZ 1
Qf4
Loss with DTZ 1
Qg1
Loss with DTZ 1
Qg4
Loss with DTZ 1
Qg5
Loss with DTZ 1
Qg6
Loss with DTZ 1
Qg7
Loss with DTZ 1
Qh2+
Loss with DTZ 1
Qh3
Loss with DTZ 1
Rxh4
Zeroing
KQQBvKQR.pgn
lichess.org
Histogram: KQQB winning vs. KQR (log scale)
Longest KQQBvKQR phases
KQQB winning with DTZ 100
KQQB winning with DTZ 111 (frustrated)
KQQB losing with DTZ 123 (frustrated)
KQQB losing with DTZ 93
KQQBvKQR statistics (unique positions)
White wins:
225,023,819,639 (68.6%)
Frustrated white wins:
628 (0.0%)
Draws:
76,432,051,889 (23.3%)
Frustrated black wins:
1,068,902 (0.0%)
Black wins:
26,789,935,166 (8.2%)
KQQBvKQR.json
(?)