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Syzygy endgame tablebases

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.

Histogram: KQQRR winning (log scale)

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Longest KQQRRvKP phases

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 (?)