How Puzzle Ratings Work (And How to Improve Faster)

Every puzzle on this site has a difficulty rating, and if you create an account, so do you. Understanding how these numbers work makes your training noticeably more effective.

Where puzzle ratings come from

Each puzzle's rating reflects how difficult it has proven to be for real players who've attempted it — not a guess by any single person. A puzzle rated 2200 has consistently stumped strong players; one rated 800 is reliably solvable by newer players.

How your personal rating moves

Your rating uses the same Elo-style math chess itself uses for player ratings. Solve a puzzle rated well above your own rating, and you gain more points than solving one below your level — because you "should" have struggled and didn't. Fail an easy one, and you lose more than failing a hard one, for the same reason.

This means your rating naturally settles near the difficulty level where you're winning roughly half the time — which is exactly the zone where training is most effective. Puzzles that are too easy don't teach you anything new; puzzles that are wildly too hard just become guessing.

Practical tips

• Don't chase only high-rated puzzles to "prove" you're strong — solving at your natural level, consistently, builds pattern recognition faster than occasionally beating something far above your level.
• A failed puzzle is still useful. Watching the solution play out after a miss teaches the pattern almost as well as solving it yourself.
• Use the browse page to filter by rating band and theme if you want to deliberately drill a specific weakness, like mating patterns or endgames.