Syzygy endgame tablebases

Black is losing with DTZ 135

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

KBNPvKR.pgn lichess.org

Histogram: KBNP winning vs. KR (log scale)

Longest KBNPvKR phases

KBNPvKR statistics (unique positions)

White wins:
14,482,868,417 (50.4%)
Frustrated white wins:
240,282 (0.0%)
Draws:
14,014,079,397 (48.8%)
Black wins:
227,028,785 (0.8%)
KBNPvKR.json (?)