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Syzygy endgame tablebases

Black is losing with DTZ 154

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

KRRRNvKQ.pgn lichess.org

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 (?)