Syzygy endgame tablebases

White is winning with DTZ 201

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

KQRNvKQR.pgn lichess.org

Histogram: KQRN winning vs. KQR (log scale)

Longest KQRNvKQR phases

KQRNvKQR statistics (unique positions)

White wins:
186,454,720,228 (50.9%)
Frustrated white wins:
6,544,294 (0.0%)
Draws:
74,353,657,261 (20.3%)
Frustrated black wins:
486,247 (0.0%)
Black wins:
105,369,819,966 (28.8%)
KQRNvKQR.json (?)