Confirmed by play and by reproduction. The maintainer could not win any
3-player game on 2026-08-03; the engine computes why from its own
constants: GR-S01 deals 2/3/4 Problems and GR-E01 asks for 5/7/9, so a
perfect group still loses at 2, 3 and 4 seats.
Not a dataset problem -- the stand-in gives 3/6/10 and this repo's
Problems.csv gives 4/6/9 against the same thresholds. No edition data
reconciles them.
Reproduction named so the ruling can be checked against it:
gd0001_group_success_is_unreachable_below_five_seats in clay-borg.
Three possibilities offered rather than one assumed: the deal is too
small, the thresholds are too high, or low seat counts are deliberately
not SHARED GROUND games -- in which case nothing currently says so and
the engine will keep offering an unwinnable game.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
tegwick
1ef0550cc4