Spectrum #3: Order these peaks by first ascent — the solution

The Spectrum puzzle from August 17, 2026: six things on one hidden scale, earliest to latest, with every figure and where the checks were best spent.

The puzzle

Order these peaks by first ascent, earliest at the top and latest at the bottom. The board opened in this order:

1. Denali
2. Annapurna
3. Matterhorn
4. Mont Blanc
5. K2
6. Mount Everest

Nothing was in its place; Mont Blanc opened 3 places from home.

The walkthrough

The ends first. Mont Blanc is the earliest of the six at 1786 and K2 the latest at 1954. Anchor those and the middle four are what is left to place.

Where the scale splits. The widest gap is between Mont Blanc (1786) and Matterhorn (1865) — 79 years apart. Everything above that line belongs on the earliest side and everything below it on the latest side, so sorting the six into those two groups is most of the puzzle.

The closest call. Mount Everest (1953) and K2 (1954) are only 1 year 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

Previous: Spectrum #2 (Sun, Aug 16) · Next: Spectrum #4 (Tue, Aug 18)

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.