Fitted Sheet Avalanche Before the In-Laws Arrive

Initial state

You are positioned at the foot of a queen-sized bed in a dim bedroom lit only by weak gray morning light filtering through half-closed blinds — the overhead light is off and the bedside lamp on the left nightstand is unplugged, its cord hanging loose. The bed is unmade: a fitted sheet has been yanked nearly entirely off the mattress and is pooled in a lumpy, inside-out mound at the foot of the bed, partially covering a flat pillow that has also slid off. The mattress corner nearest you on the right is completely exposed, the elastic corner pocket of the sheet dangling against it. On top of the sheet pile sits a striped tabby cat, curled up and motionless — not sleeping, just settled, watching you. A flat-screen TV on a low dresser to your left shows a muted morning news program, casting intermittent blue flicker across the room. On the right nightstand, mostly occluded by a tall water glass, is a phone with its screen lit showing a countdown timer — you can see digits but cannot read them from this distance. A folded flat sheet and two pillowcases are stacked neatly on the dresser top beside the TV, clearly placed there in preparation. The air smells faintly of coffee from somewhere else in the house. Voices — adult, calm — can be heard from the hallway but no one enters. The dresser corner on the far left edge of your view is partially clipped by your camera angle.

Goal state

The fitted sheet is fully on the mattress with all four elastic corner pockets seated over all four mattress corners, pulled taut enough that no visible bunching remains along the sides. The flat pillow is on top of the flat sheet (not required to be in a pillowcase, but pillowcase placement is a soft success bonus). The flat sheet is spread over the bed and roughly centered, overhanging evenly on both sides within approximately 10 cm. The cat has vacated the bed of its own accord or has been gently displaced without distress. The bed is visually presentable from the doorway perspective. The phone timer has not reached zero during the task (soft constraint — task is still complete if timer expires, but a timeout is logged as a training signal).

Objects involved

Expected actions

1. 1. approach the right nightstand to read the phone timer and assess remaining time 8s
2. 2. navigate around the foot of the bed toward the left side to assess full sheet extent and cat position 10s
3. 3. push the cat gently sideways along the sheet surface toward the far edge of the mattress using the back of one gripper at low force 12s
4. 4. wait for cat to step off or reposition before resuming contact with sheet 6s
5. 5. pull the sheet mound toward you with both grippers to separate it from the pillow underneath 10s
6. 6. lift the pillow and set it on the dresser top temporarily to clear the workspace 8s
7. 7. pick up the fitted sheet by two adjacent corners, lifting it to identify inside-out orientation by feel and visual inspection of the tag 15s
8. 8. rotate the sheet to right-side-out by inverting both held corners outward and shaking once to loosen the fabric 14s
9. 9. navigate to the far left corner of the mattress and stretch to place the near elastic corner pocket over the mattress corner 18s
10. 10. navigate to the far right corner and place the second elastic corner pocket over that mattress corner, pulling the sheet taut across the far edge 18s
11. 11. navigate to the near right corner at the foot of the bed and seat the third elastic pocket over the mattress corner, pulling down and under 14s
12. 12. navigate to the near left corner and seat the fourth elastic pocket, tugging the side panel taut between both corners to remove bunching 14s
13. 13. slide both grippers along each side edge of the fitted sheet to smooth any remaining wrinkles 10s
14. 14. pick up the folded flat sheet from the dresser top and unfold it above the bed, allowing it to settle by gravity 20s
15. 15. pull the flat sheet edges to center it, checking left and right overhang symmetry by comparing distances to each side of the mattress 12s
16. 16. retrieve the pillow from the dresser and set it on top of the flat sheet near the head of the bed 10s
17. 17. retreat to the doorway position and visually assess the bed from a distance to confirm presentable state 7s

Narration script

Edge cases

• The cat returns to the bed mid-task and sits exactly on one of the unseated mattress corners, requiring a second gentle displacement before the corner pocket can be seated.
• The fitted sheet, when inverted, reveals that the tag has been cut out — orientation of head versus foot end must be inferred from corner shape asymmetry or trial-and-error corner seating.
• The countdown timer reaches zero before the task is complete because the operator spent too long on sheet inversion — the phone begins audibly alarming, drawing attention and potentially causing a hesitation loop; task should still be completed despite alarm.
• The flat sheet, when unfolded above the bed, catches on a corner of the headboard and tears slightly at an existing weak seam — operator must decide whether to ignore the minor tear, attempt to smooth it flat, or stop and set sheet aside.
• The water glass on the right nightstand is accidentally contacted during the approach navigation and tips slightly — operator must choose to stabilize it or leave it, since it is not in the primary task path but could spill onto the phone.