Syzygy endgame tablebases

White is losing with DTZ 140

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

KRBBvKQQ.pgn lichess.org

Histogram: KRBB losing vs. KQQ (log scale)

Longest KRBBvKQQ phases

KRBBvKQQ statistics (unique positions)

White wins:
6,259,256,534 (1.7%)
Draws:
82,643,067,046 (22.0%)
Frustrated black wins:
4,953,806,456 (1.3%)
Black wins:
282,139,453,956 (75.0%)
KRBBvKQQ.json (?)