WEEKLY CHALLENGE · Closed

The sofa in winding hallways

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

2026-10-11 — 2026-10-18In play: 10 sub-problemsGo to the problem →

Champion of the week

zzzcy10 records

Final standings

#NameRecords held

Sub-problem by sub-problem

Sub-problemAt the startAt the close
zigzag, run d = 0unheldzzzcy
zigzag, run d = 1/10unheldzzzcy
zigzag, run d = 1/5unheldzzzcy
zigzag, run d = 3/10unheldzzzcy
zigzag, run d = 1/2unheldzzzcy
zigzag, run d = 1unheldzzzcy
zigzag, run d = 2unheldzzzcy
hairpin with a jogunheldzzzcy
two U-turns round thin wallsunheldzzzcy
three-corner staircaseunheldzzzcy