Syzygy endgame tablebases
White to move
Black to move
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Black is losing with DTZ 10
Rb2+
Loss with DTZ 9
Qa2+
Loss with DTZ 8
Ra4
Loss with DTZ 5
Rb3
Loss with DTZ 5
Rb5
Loss with DTZ 5
Rb8
Loss with DTZ 5
Rc4
Loss with DTZ 5
Ke8
Loss with DTZ 5
Qb3
Loss with DTZ 5
Qc4
Loss with DTZ 5
Qe8
Loss with DTZ 5
Qg5+
Loss with DTZ 5
Qg7
Loss with DTZ 5
Kc7
Loss with DTZ 3
Kc8
Loss with DTZ 3
Kd7
Loss with DTZ 3
Ke7
Loss with DTZ 3
Qe6
Loss with DTZ 3
Qg4
Loss with DTZ 3
Rb1
Loss with DTZ 1
Rb6
Loss with DTZ 1
Rb7
Loss with DTZ 1
Rd4+
Loss with DTZ 1
Qd5+
Loss with DTZ 1
Qf7
Loss with DTZ 1
Qf8
Loss with DTZ 1
Qg1
Loss with DTZ 1
Qg2
Loss with DTZ 1
Qg3
Loss with DTZ 1
Qg6
Loss with DTZ 1
Qh7
Loss with DTZ 1
Qh8
Loss with DTZ 1
Rxe4
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
(?)