CenterCross: Math Crossword

CenterCross is a math crossword where every line points to the center. Fill in the missing numbers so every sum is true: a calm, clever number puzzle 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 tiles into the blanks, find the hidden signs, and solve the whole board with pure logic. Easy to learn, hard to put down. 1,000 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 every one can be solved step by step by logic alone. No luck and 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, on iPhone and iPad • Works offline: no internet needed to play, no account, no sign-up HOW TO PLAY 1. Every card is an equation that must equal the number it points to. 2. Tap a blank, then tap a number tile, or drag a tile onto a blank. 3. Right answers turn green and lock; wrong ones turn red. 4. 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. 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 or ideas? Write to [email protected]