Syzygy endgame tablebases
White to move
Black to move
JavaScript required for interactive board view.
Black is losing with DTZ 114
Qf2+
Loss with DTZ 113
Qd4+
Loss with DTZ 7
Qd6+
Loss with DTZ 5
Qh2+
Loss with DTZ 5
Qb4+
Loss with DTZ 1
Qb8
Loss with DTZ 1
Qc4
Loss with DTZ 1
Qc7
Loss with DTZ 1
Qe4
Loss with DTZ 1
Qe5
Loss with DTZ 1
Qf1
Loss with DTZ 1
Qf3
Loss with DTZ 1
Qf5
Loss with DTZ 1
Qf6
Loss with DTZ 1
Qf7
Loss with DTZ 1
Qf8
Loss with DTZ 1
Qg3
Loss with DTZ 1
Qg4
Loss with DTZ 1
Qg5
Loss with DTZ 1
Qh4
Loss with DTZ 1
Qh6
Loss with DTZ 1
Qxa4
Zeroing
Qxe3+
Zeroing
This is a blessed loss.
Mate can be forced, but a draw can be achieved under the fifty-move rule.
KQQBBvKQ.pgn
lichess.org
Histogram: KQQBB winning vs. KQ (log scale)
⋮
Longest KQQBBvKQ phases
KQQBB winning with DTZ 61
KQQBB winning with DTZ 115 (frustrated)
KQQBB losing with DTZ 103 (frustrated)
KQQBB losing with DTZ 19
KQQBBvKQ statistics (unique positions)
White wins:
347,925,776,420 (97.3%)
Frustrated white wins:
12,100,780 (0.0%)
Draws:
8,801,326,878 (2.5%)
Frustrated black wins:
16,522,484 (0.0%)
Black wins:
760,083,610 (0.2%)
KQQBBvKQ.json
(?)