Syzygy endgame tablebases

Invalid position

The given position is not a legal chess position.

Histogram: KR losing vs. KR (log scale)

Longest KRvKR phases

KRvKR statistics (unique positions)

White wins:
401,517 (14.9%)
Draws:
1,892,778 (70.2%)
Black wins:
401,517 (14.9%)
KRvKR.json (?)

KRvKR dependencies

To probe all KRvKR positions, these tables and their transitive dependencies are also required:

KRvK

KRvKR.txt KRvKR.dot