Syzygy endgame tablebases
White to move
Black to move
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Black is losing with DTZ 160
Qd1+
Loss with DTZ 159
Qe4+
Loss with DTZ 123
Be4+
Loss with DTZ 5
Qa1+
Loss with DTZ 1
Qa2
Loss with DTZ 1
Qa3
Loss with DTZ 1
Qb3
Loss with DTZ 1
Qb4
Loss with DTZ 1
Qb5
Loss with DTZ 1
Qc2
Loss with DTZ 1
Qc4
Loss with DTZ 1
Qc6+
Loss with DTZ 1
Qd4
Loss with DTZ 1
Qd7
Loss with DTZ 1
Qe8
Loss with DTZ 1
Ke4
Loss with DTZ 1
Kf3
Loss with DTZ 1
Kg3
Loss with DTZ 1
Kg4
Loss with DTZ 1
Bb1
Loss with DTZ 1
Bc2
Loss with DTZ 1
Bd3
Loss with DTZ 1
Be8
Loss with DTZ 1
Bf5
Loss with DTZ 1
Bf7
Loss with DTZ 1
Bh5
Loss with DTZ 1
Bh7
Loss with DTZ 1
Qxa5
Zeroing
This is a blessed loss.
Mate can be forced, but a draw can be achieved under the fifty-move rule.
KQQPvKQB.pgn
Histogram: KQQP winning vs. KQB (log scale)
Longest KQQPvKQB phases
KQQP winning with DTZ 100
KQQP winning with DTZ 160 (frustrated)
KQQP losing with DTZ 103 (frustrated)
KQQP losing with DTZ 71
KQQPvKQB statistics
824,342,272,076 (75.2%)
14,084,550 (0.0%)
245,198,527,530 (22.4%)
958 (0.0%)
26,116,316,062 (2.4%)
KQQPvKQB.json
(?)