Syzygy endgame tablebases

White is losing with DTZ 285

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

KBNPvKRN.pgn lichess.org

Histogram: KBNP losing vs. KRN (log scale)

Longest KBNPvKRN phases

KBNPvKRN statistics (unique positions)

White wins:
325,451,593,426 (20.3%)
Frustrated white wins:
78,183,992 (0.0%)
Draws:
911,967,495,623 (56.8%)
Frustrated black wins:
10,522,895,977 (0.7%)
Black wins:
358,072,941,306 (22.3%)
KBNPvKRN.json (?)