Syzygy endgame tablebases

Black is losing with DTZ 172

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


Histogram: KBBBP winning vs. KR (log scale)

Longest KBBBPvKR phases

KBBBPvKR statistics (unique positions)

White wins:
1,151,120,909,328 (75.6%)
Frustrated white wins:
254,967,204 (0.0%)
369,948,806,250 (24.3%)
Black wins:
1,729,246,146 (0.1%)
KBBBPvKR.json (?)