WEEKLY CHALLENGE · Closed

The sofa in a hairpin

This week has settled; the standings and scores below are final.

2026-09-06 — 2026-09-13In play: 8 sub-problemsGo to the problem →

Champion of the week

Tmrg8 records

Final standings

#NameRecords held

Sub-problem by sub-problem

Sub-problemAt the startAt the close
wall thickness w = 1/10unheldTmrg
wall thickness w = 1/5unheldTmrg
wall thickness w = 1/4unheldTmrg
wall thickness w = 2/5unheldTmrg
wall thickness w = 1/2unheldTmrg
wall thickness w = 3/4unheldTmrg
wall thickness w = 1unheldTmrg
wall thickness w = 5/4unheldTmrg