Syzygy endgame tablebases

Black is losing with DTZ 106

Nf5+ Loss with DTZ 105

Ne2 Loss with DTZ 3 Ne4 Loss with DTZ 3 Nf1 Loss with DTZ 3 Nh1 Loss with DTZ 3 Kc7 Loss with DTZ 1 Kc8 Loss with DTZ 1 Nh5 Loss with DTZ 1 Kxa7 Zeroing

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

KRBNPvKN.pgn lichess.org

Histogram: KRBNP winning vs. KN (log scale)

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Longest KRBNPvKN phases

KRBNPvKN statistics (unique positions)

White wins:
1,630,726,438,726 (99.7%)

Frustrated white wins:
5,066,329 (0.0%)

Draws:
4,216,733,844 (0.3%)

Black wins:
12,409,695 (0.0%)

KRBNPvKN.json (?)