Syzygy endgame tablebases
White to move
Black to move
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Black is losing with DTZ 106
Rd5+
Loss with DTZ 105
Kc5
Loss with DTZ 1
Kc6
Loss with DTZ 1
Kc7
Loss with DTZ 1
Kd5
Loss with DTZ 1
Kd7
Loss with DTZ 1
Ke5
Loss with DTZ 1
Ke6
Loss with DTZ 1
Ke7
Loss with DTZ 1
Ba8
Loss with DTZ 1
Bb7
Loss with DTZ 1
Bc6
Loss with DTZ 1
Bd5
Loss with DTZ 1
Be4
Loss with DTZ 1
Bf1
Loss with DTZ 1
Bf3
Loss with DTZ 1
Bh3
Loss with DTZ 1
Ra5
Loss with DTZ 1
Rb5
Loss with DTZ 1
Rc5
Loss with DTZ 1
Re5
Loss with DTZ 1
Rf5
Loss with DTZ 1
Rg3
Loss with DTZ 1
Rg4
Loss with DTZ 1
Rg6
Loss with DTZ 1
Rg7
Loss with DTZ 1
Rh5
Loss with DTZ 1
Rxg8
Zeroing
Bxh1
Zeroing
This is a blessed loss.
Mate can be forced, but a draw can be achieved under the fifty-move rule.
KQRRvKRB.pgn
Histogram: KQRR winning vs. KRB (log scale)
⋮
Longest KQRRvKRB phases
KQRR winning with DTZ 51
KQRR winning with DTZ 107 (frustrated)
KQRR losing with DTZ 103 (frustrated)
KQRR losing with DTZ 11
KQRRvKRB statistics
370,049,055,861 (93.2%)
10,276 (0.0%)
26,514,419,437 (6.7%)
7,892 (0.0%)
526,449,328 (0.1%)
KQRRvKRB.json
(?)