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Syzygy endgame tablebases

Black is losing with DTZ 154

Qd3+ Loss with DTZ 153

Qe4 Loss with DTZ 4 Qf5 Loss with DTZ 2 Qg6 Loss with DTZ 2 Qa1 Loss with DTZ 1 Qb2 Loss with DTZ 1 Qc2+ Loss with DTZ 1 Qh7 Loss with DTZ 1 Kb4 Loss with DTZ 1 Qxa2 Zeroing Qxc1+ Zeroing

This is a blessed loss. Mate can be forced, but a draw can be achieved under the fifty-move rule.

Histogram: KRRRN winning vs. KQ (log scale)

Longest KRRRNvKQ phases

KRRRNvKQ statistics

378,096,744,930 (94.2%)

25,199,094 (0.0%)

20,835,328,911 (5.2%)

2,452,383,741 (0.6%)

KRRRNvKQ.json (?)