Balance case
Rookie
D 150
The Keepers' Roster at Gull Rock
Three keepers share the watches at Gull Rock lighthouse. The roster board in the lamp room has been half rubbed out by a leaky roof, and the relief boat comes…
The Harbourmaster's Roster
The harbourmaster keeps the watch roster on a board of suns and moons. A sun means a day watch. A moon means a night watch. Next week's board has been half rubbed out, and the rules for a fair roster are strict — only one board fits them all. Rebuild the roster: every row and every column must hold three day watches and three night watches, and no one may draw three of the same watch back to back.
- Kind
- Balance case
- Difficulty
- D 175
- Tier
- Rookie · D 100–399
- Worth
- 18 pts for a clean solve
- Par time
- 3:12
- Technique
- Depth 1
Points for solving; rating never moves in free play.
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The Night Roster at Millbrook
Millbrook station runs through the night, and the staff roster is chalked on a board of suns and moons. Someone has wiped half the board clean the night before…
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The hill observatory watches the sky in turns, day staff and night staff, and the board that shares the watches has lost half its marks. The winter comet…