Syzygy endgame tablebases

White is losing with DTZ 440

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

KBNPvKRB.pgn lichess.org

Histogram: KBNP losing vs. KRB (log scale)

Longest KBNPvKRB phases

KBNPvKRB statistics (unique positions)

White wins:
269,203,757,716 (17.1%)
Frustrated white wins:
1,149,646 (0.0%)
Draws:
734,954,028,627 (46.8%)
Frustrated black wins:
98,714,380,136 (6.3%)
Black wins:
468,398,423,643 (29.8%)
KBNPvKRB.json (?)