Syzygy endgame tablebases
White to move
Black to move
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Black is losing with DTZ 101
axb1=Q+
Zeroing
axb1=R+
Zeroing
a1=B
Zeroing
a1=N
Zeroing
a1=Q
Zeroing
a1=R
Zeroing
axb1=B
Zeroing
axb1=N
Zeroing
This is a blessed loss.
Mate can be forced, but a draw can be achieved under the fifty-move rule.
KQQRRvKP.pgn
Histogram: KQQRR winning vs. KP (log scale)
⋮
Longest KQQRRvKP phases
KQQRR winning with DTZ 6
KQQRR winning with DTZ 101 (frustrated)
KQQRR losing with DTZ 2
KQQRRvKP statistics
1,304,459,050,320 (99.6%)
972 (0.0%)
4,618,928,104 (0.4%)
23,623,396 (0.0%)
KQQRRvKP.json
(?)