Syzygy endgame tablebases

Black is losing with DTZ 101

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


Histogram: KRRRR winning vs. KP (log scale)

Longest KRRRRvKP phases

KRRRRvKP statistics (unique positions)

White wins:
1,423,393,540,656 (99.8%)
Frustrated white wins:
20,520 (0.0%)
2,934,508,968 (0.2%)
Black wins:
69,856,512 (0.0%)
KRRRRvKP.json (?)