Estimate scope
Only DD-selected games and slams, including ties, are estimated. Part-scores are skipped. Each hypothetical declarer + dummy is known; defenders are sampled before any lead, with auction evidence when enabled. Eight shared deals per sampled pair. Mean sampled DD scores include undertrick penalties. A small, noisy estimate, not a guaranteed single-dummy strategy or information available during bidding.
chbridge 0.1 alpha
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