Syzygy endgame tablebases

Invalid position

The given position is not a legal chess position.

Histogram: KPPP winning vs. KRR (log scale)

Longest KPPPvKRR phases

KPPPvKRR statistics (unique positions)

White wins:
71,640,466,716 (7.9%)
Frustrated white wins:
4,892,952 (0.0%)
Draws:
84,896,833,512 (9.3%)
Frustrated black wins:
24 (0.0%)
Black wins:
755,843,747,556 (82.8%)
KPPPvKRR.json (?)