How to Play 37, The Math Puzzle

37 is a free daily math puzzle. You roll seven dice and combine them using addition, subtraction, multiplication, division, parentheses and exponents so that your equation equals exactly 37. It is designed to be quick to learn and genuinely hard to master — smart games for smart people.

The core loop

You are given seven dice.
Build one equation from them that evaluates to the target: 37.
Each die is its own value — you can’t push two dice together to make a bigger number (a 3 and a 7 do not become 37).
Standard order of operations applies (parentheses, exponents, then multiply/divide, then add/subtract).

Game modes

There are three difficulty modes, and each one is played in two kinds of round — an untimed practice round and its own timed Daily. That is six ways to play. The Daily is not a fourth mode; it is a round type every mode has.

Easy

All seven dice are white and there are no power-dice rules — just reach 37. Untimed practice with unlimited rounds, plus its own Easy Daily.

Challenge

The same board with three colored power dice. Use two of the three correctly for a Valid Solve; use all three for a Perfect Solve. Untimed practice with unlimited rounds, plus the Daily Challenge.

Expert

Challenge’s board, judged strictly: only a Perfect Solve counts. Two of three is a miss, not a lesser win. Untimed practice with unlimited rounds, plus its own Expert Daily.

The Dailies — one for each mode

One puzzle, one attempt, in one sitting. Every player on that mode gets the same seven dice that day, and all three Dailies refresh at midnight ET. Leave before finishing and it counts as a forfeit.

Easy Daily — seven white dice. No power dice, so no Perfect Solve and no Puzzle Pieces; its rewards are its streak and its leaderboard.
Daily Challenge — power dice on. A Perfect Solve here earns a Puzzle Piece.
Expert Daily — power dice on, and only a Perfect Solve counts.

Each Daily keeps its own leaderboard and its own streak. Skipping one mode never breaks another mode’s streak — so you can play just one Daily every day and keep a perfect streak in it.

The power-dice system

In Challenge and Expert — in both their practice rounds and their Dailies — three of your seven dice are colored power dice. Easy never has them.

Green — add or subtract with it (+ or −).
Blue — multiply or divide with it (× or ÷).
Red — use it as a base or a power (^).

In Challenge: use at least 2 of the 3 correctly for a Valid Solve; use all 3 for a Perfect Solve. A Perfect Solve on the Daily Challenge earns a Puzzle Piece 🧩
In Expert: all 3 must be used correctly — only a Perfect Solve counts at all.

Winning examples

Every example below is a real solution that equals 37 (each one is verified against the game’s equation engine, so none can drift to a wrong answer).

Easy

Plain and simple — ×, +, −: 6×6+1+1−1−1+1

Nested parentheses + division: ((6×3)+4+5)+5×4÷2

An exponent — 2⁵: 2^5+5+4−3−2+1

Challenge

Two parenthesis groups (Valid): (6+1)×5+(6−4)+1−1

Two of three power dice (Valid): 6×6+6−2−1−1−1

Exponent power — 6² (Perfect): 6^2+3×1+1−2−1

Parenthetical exponent — (6−1)² (Perfect): (6−1)^2+6×2+1−1

Daily Challenge

Two parenthesis groups (Valid): (5+1)×6+(4−3)+1−1

Two of three power dice (Valid): 5×6+6+3+1−1−2

Exponent + a parenthesis (Perfect): 6^2+(6−5)×1+1−1

The (3÷3)=1 trick (Perfect): 6^2+(3÷3)×1+1−1

Expert

Expert plays the same board as Challenge, so its examples are the Challenge and Daily solutions above marked (Perfect) — and only those. A solution marked (Valid) uses two of the three power dice, which in Expert is a miss rather than a lesser win.

Where to play

Play free in your browser at 37themathpuzzle.app. 37 is also available as a native app on iOS and Android.