2024 - Position 116

XGID=-aB-BCC-A--AdB-----cbabb-A:0:0:1:00:1:5:0:9:10

Match Play. Red trails 1-5 to 9. Should Red double? If doubled, should White take?

Interestingly XG’s initial evaluation’s  of this position that it is a clear double for Red but once it looks deeper (via a rollout) it completely reverses its original decision.

The problem is that Red loses as many gammons as White and a gammon loss is the end of the match.

Giving White perfect cube efficiency is not a good idea and so Red should not double. Doubling is a bad error but not a blunder.