SumRace — maths & logic puzzles against the clock

Twelve puzzle games, three difficulties, a seeded daily set that is the same for everyone, global leaderboards and live head-to-head races.

The puzzles

🔺 Number Pyramid — Fill the gaps in a pyramid where every block is the sum of the two below it.
🔢 Operator Gap — Pick the right + − × ÷ operators to make the equation true.
🎯 Target Number — Countdown-style: combine the dealt cards to hit the target number.
🟦 Magic Square — Complete the grid so every row, column and diagonal sums to the same number.
⊞ Futoshiki — A Latin-square puzzle where inequality signs between cells must be obeyed.
➗ Missing Digits — Restore the hidden digits so the equation balances.
✖️ Crossmath — A crossword where every across and down "word" is a true equation.
💡 Lights Out — Tap cells to toggle lights and clear the whole board.
🧮 Mini KenKen — Fill the grid so each cage reaches its target with the given operation.
🏙️ Skyscraper — Place tower heights so the edge clues count exactly what is visible.
⚫ Binary — Fill 0s and 1s — equal counts per line and never three in a row.
🗼 Tower of Hanoi — Move the whole stack to the last peg in the fewest moves.