Spectrum #91: Order these by how far down they are — the solution
The Spectrum puzzle from November 13, 2026: six things on one hidden scale, shallowest to deepest, with every figure and where the checks were best spent.
The puzzle
Order these by how far down they are, shallowest at the top and deepest at the bottom. The board opened in this order:
- Floor of Lake Baikal
- Carlsbad Caverns' Big Room
- Wreck of the Titanic
- Kola Superdeep Borehole
- Deepest scuba dive
- Challenger Deep
Nothing was in its place; Deepest scuba dive opened 3 places from home.
The walkthrough
The ends first. Carlsbad Caverns' Big Room is the shallowest of the six at 750 ft and Kola Superdeep Borehole the deepest at 40,230 ft. Anchor those and the middle four are what is left to place.
Where the scale splits. The widest gap is between Wreck of the Titanic (12,500 ft) and Challenger Deep (35,876 ft) — 23,376 ft apart. Everything above that line belongs on the shallowest side and everything below it on the deepest side, so sorting the six into those two groups is most of the puzzle.
The closest call. Carlsbad Caverns' Big Room (750 ft) and Deepest scuba dive (1,090 ft) are only 340 ft apart — the pair that is a coin flip without the figures, and the place to spend a check: a check locks whatever is already right and leaves only the wrong tiles to swap.
The answer
| # | Shallowest to Deepest | Figure |
|---|---|---|
| 1 | Carlsbad Caverns' Big Room | 750 ft |
| 2 | Deepest scuba dive | 1,090 ft |
| 3 | Floor of Lake Baikal | 5,387 ft |
| 4 | Wreck of the Titanic | 12,500 ft |
| 5 | Challenger Deep | 35,876 ft |
| 6 | Kola Superdeep Borehole | 40,230 ft |
Previous: Spectrum #90 (Thu, Nov 12) · All Spectrum solutions
About Spectrum
Spectrum is Noggin’s daily ordering puzzle: six things, one hidden scale, three checks. Tiles in the right place lock green; the figures turn over when the board is done. How to play Spectrum, or play today’s.