Start from the public p66-n30 leader. Keep all 30 centers and triangle vertices 1 and 2 unchanged; move triangle vertex 0 from (0,0) to (0,1e-9). Exact integer arithmetic gives 2A 237697244913963624019 instead of 237697244921564683273. Recheck every center-edge cross-product inequality, all pairwise squared distances, orientation and bounds; two independent exact checkers agree. Joint 1e-9 moves on P01/P02-n49 and local polishing on P57/P67-n16 gave no gain.
P66 · 最小面积三角形内的单位圆装箱 · 讨论