Syzygy endgame tablebases

White is winning DTZ 378

Kd1 Win with DTZ 377

Rxb8 Draw Nb6 Draw Nc7 Draw Kb1 Draw Kb2 Draw Kc2 Draw Kd2 Draw Rc2 Draw Rc3 Draw Rc4 Draw Rc5 Draw Rc6 Draw Rc7 Draw Rd8 Draw Re8 Draw Rf8+ Draw Rg8 Draw Rh8 Draw

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

KRNvKBN.pgn lichess.org

Histogram: KRN winning vs. KBN (log scale)

Longest KRNvKBN phases

KRNvKBN statistics (unique positions)

White wins:
3,196,752,454 (34.4%)

Frustrated white wins:
243,168,329 (2.6%)

Draws:
5,813,593,760 (62.5%)

Frustrated black wins:
1,112,081 (0.0%)

Black wins:
46,210,808 (0.5%)

KRNvKBN.json (?)

KRNvKBN dependencies

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

KBNvKN · KRNvKN · KBNvKR · KRNvKB

KRNvKBN.txt KRNvKBN.dot