Syzygy endgame tablebases

Black is losing with DTZ 101

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

KQRRvKNN.pgn lichess.org

Histogram: KQRR winning vs. KNN (log scale)

Longest KQRRvKNN phases

KQRRvKNN statistics (unique positions)

White wins:
442,542,089,786 (99.8%)
Frustrated white wins:
5,208 (0.0%)
Draws:
1,064,826,184 (0.2%)
Black wins:
14,068,748 (0.0%)
KQRRvKNN.json (?)