Syzygy endgame tablebases

Black is losing with DTZ 164

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


Histogram: KBBBN winning vs. KR (log scale)

Longest KBBBNvKR phases

KBBBNvKR statistics (unique positions)

White wins:
377,337,630,009 (76.2%)
Frustrated white wins:
36,293,223,444 (7.3%)
81,300,698,652 (16.4%)
Black wins:
460,737,465 (0.1%)
KBBBNvKR.json (?)