Syzygy endgame tablebases

Black is losing with DTZ 118

Rc6 Loss with DTZ 117

Nb7 Loss with DTZ 5 Nc6 Loss with DTZ 3 Ra8 Loss with DTZ 3 Ke2 Loss with DTZ 3 Kf2 Loss with DTZ 3 Nb3 Loss with DTZ 1 Nc4 Loss with DTZ 1 Ra7 Loss with DTZ 1 Rb6 Loss with DTZ 1 Rd6 Loss with DTZ 1 Re6 Loss with DTZ 1 Rf6 Loss with DTZ 1 Rg6 Loss with DTZ 1 Rh6 Loss with DTZ 1

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

KQBNvKRN.pgn lichess.org

Histogram: KQBN winning vs. KRN (log scale)

⋮

Longest KQBNvKRN phases

KQBNvKRN statistics (unique positions)

White wins:
367,612,368,631 (81.2%)

Frustrated white wins:
25,190,949 (0.0%)

Draws:
74,468,661,616 (16.5%)

Frustrated black wins:
1,914,358,152 (0.4%)

Black wins:
8,631,355,860 (1.9%)

KQBNvKRN.json (?)