Syzygy endgame tablebases
White to move
Black to move
JavaScript required for interactive board view.
White is winning with DTZ 1
Qxh1
Zeroing
Qb3+
Win with DTZ 2
Qc4+
Win with DTZ 2
Qd7+
Win with DTZ 2
Qf5+
Win with DTZ 2
Qg6+
Win with DTZ 2
Qfh7+
Win with DTZ 2
Qc2+
Win with DTZ 2
Qhh7+
Win with DTZ 2
Qg3+
Win with DTZ 4
Kd8
Win with DTZ 12
Qff4
Win with DTZ 12
Kd6
Win with DTZ 14
Kd7
Win with DTZ 14
Qfa2
Win with DTZ 14
Qe6
Win with DTZ 14
Qff2
Win with DTZ 14
Kc8
Win with DTZ 16
Qf8
Win with DTZ 16
Qe7
Win with DTZ 18
Qe8
Win with DTZ 18
Qf6
Win with DTZ 18
Ba1
Draw
Bc3
Draw
Bd6
Draw
Bf4
Draw
Bf6
Draw
Bg3
Draw
Bg7
Draw
Bh8
Draw
Qd5+
Draw
Qf1+
Draw
Qf3+
Draw
Qg7
Draw
Qg8
Draw
Qfh5
Draw
Qha2
Draw
Qb2
Draw
Qd2+
Draw
Qe2+
Draw
Qhf2
Draw
Qhf4
Draw
Qg1
Draw
Qg2
Draw
Qh3+
Draw
Qh4
Draw
Qhh5
Draw
Qh6
Draw
Qh8
Draw
Bd4
Loss with DTZ 2
Bb2
Loss with DTZ 1
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
(?)