Small equations, one big center
Easy to learn, hard to put down: a calm number crossword you can play anywhere.
1,000 Math Puzzles
Seven levels from Very Easy to Grandmaster, with carrying, borrowing, hidden signs and blank centers.
Every Line Hits the Center
Each card is a small equation that must equal the number in the middle. Drag tiles into the blanks to make every sum true.
Pure Logic, No Guessing
Every puzzle has exactly one solution you can reach step by step. No luck and no timers.
Streaks and Stars
Keep a daily streak going and earn 3 stars by solving with no mistakes and no hints.
Hints When You're Stuck
Reveal an answer whenever you need a nudge, or watch an optional video for extra hints or attempts.
Play Anywhere
Works offline with no account or sign-up. Light and dark mode, and no ads during a puzzle.
About CenterCross: Math Crossword
CenterCross is a math crossword puzzle game where every line points to the center. Fill in the missing numbers so every sum is true: a calm, clever number crossword and brain game you can play offline, anywhere.
Each card is a small equation, like 37 + ? = 61, and every card's line leads to the number in the middle. Drag the right number tiles into the blanks, find the hidden signs, and solve each puzzle with pure logic. Easy to learn, hard to put down.
★ 1,000 MATH PUZZLES
Start with gentle addition in Very Easy and work up through Easy, Medium, Hard, Expert, Master and Grandmaster. Every level brings something new:
- Addition and subtraction with carrying and borrowing
- Hidden signs: find the missing + − × ÷
- Blank centers: work out the middle number from the clues
- Two puzzles on one board in the hardest levels
Finish a level to unlock the next one.
★ PURE LOGIC, NO GUESSING
Every puzzle has exactly one solution and can be solved step by step by logic alone. No luck, no timers rushing you: just you, the numbers and a satisfying "aha!" when the last sum clicks into place.
★ A BRAIN GAME FOR EVERY DAY
- Mental math practice that feels like a game, not homework
- Keep a daily streak going and collect 3 stars on every puzzle
- Hints show you an answer whenever you're stuck
- Light and dark mode, easy on the eyes at night
- Works offline: no internet, no account, no sign-up
★ HOW TO PLAY
- Every card is an equation that must equal the number it points to.
- Tap a blank, then tap a number tile, or drag a tile onto a blank.
- Right answers turn green and lock; wrong ones turn red.
- Fill every card to solve the puzzle. No mistakes and no hints = 3 stars.
★ PERFECT FOR
Fans of number crosswords, cross sums, Sudoku, math riddles, brain teasers and logic puzzles, and anyone who wants a few quiet minutes of focused thinking. A relaxing math game for adults and teens who love numbers.
CenterCross is free to play and supported by ads. There are no ads during a puzzle, and optional videos give you extra hints or extra attempts.
Questions, ideas or a puzzle that felt wrong? Write to sultonuzdev@gmail.com. Every message is read.