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groups
Sixteen tiles belong to four groups of four, and the connections are never the obvious ones. Some tiles look like they fit two groups. Only one arrangement works.
How a round plays
Sixteen items. Four hidden sets.
- Select four tiles you believe belong together.
- Submit. A correct set locks and names itself.
- Four wrong guesses and the day is over.
Scoring and fairness
What the grade is measuring.
The ◆ grade. How many sets you locked, and how many mistakes it cost.
Hints.Pre-selects two tiles that genuinely belong together. Using one keeps you off the ranked board for that day, so a hint can rescue a round but never buy a rank.
How the result is proved.Per-guess checks + win token. Every one of the ten games is verified server-side in one of three ways — a replayed move log, a server-graded answer, or per-guess checks that end in a signed win token — so the leaderboard only counts results the server could reconstruct for itself.
- Verification: Per-guess checks + win token
- Puzzle source: Generated and curated
- Typical round: 3–6 min
Where it comes from
A new one, every night.
Tomorrow's groups already exists. It was generated from a date seed, checked by a solver, and put in a queue that runs weeks ahead of today — so nothing ships the night it was made, and a bad batch never reaches a player.