Syzygy endgame tablebases

Black is losing with DTZ 106

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


Histogram: KRRRB winning vs. KR (log scale)

Longest KRRRBvKR phases

KRRRBvKR statistics (unique positions)

White wins:
437,508,060,186 (99.8%)
Frustrated white wins:
33,522 (0.0%)
638,156,682 (0.1%)
Black wins:
267,261,108 (0.1%)
KRRRBvKR.json (?)