Syzygy endgame tablebases

Black is losing with DTZ 122

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

KRBNvKNN.pgn lichess.org

Histogram: KRBN winning vs. KNN (log scale)

Longest KRBNvKNN phases

KRBNvKNN statistics (unique positions)

White wins:
430,923,331,100 (82.3%)
Frustrated white wins:
8,579,619,288 (1.6%)
Draws:
84,343,436,232 (16.1%)
Black wins:
35,515,140 (0.0%)
KRBNvKNN.json (?)