Make Arrows! vs Missing Digits

Drag and drop the scattered arrow pieces to put them in the correct order. Complete a full arrow to make it automatically leave the board and free up space. Arrange all the pieces carefully and clear the area to win.

Uncover the hidden digits by reasoning, not guessing. 4■2 + ■8■ = 12■5. Guessing gets you nowhere. But follow the carry from the ones column, and the answer narrows to exactly one possibility. FUKUMEN does one thing: missing-digit arithmetic, done beautifully, forever. ■ Features - Endless puzzles, generated on your device From simple addition to full long multiplication with three partial-product rows. You will not see the same puzzle twice. - Exactly one answer, always Each puzzle starts as a completed sum, then digits are hidden — but only up to the point where a second answer would become possible. Every puzzle is verified before it reaches you. No unsolvable boards. No ambiguous boards. - Four difficulties Easy and Normal are addition. Hard and Oni are long multiplication. At Oni, 19 of the 26 cells are blank. - Today's puzzle One puzzle a day, the same one for everyone. Streaks and a calendar keep your history visible. - A real long-form layout Chalk on a blackboard, set vertically the way you'd write it by hand. Tap a blank, type a digit. The board scales up when the numbers are short. - Quiet help Columns that can't work out are tinted, gently — you can turn this off. And if you're truly stuck, a hint opens a single cell. - Records Puzzles solved, streak, average time, best time per difficulty. ■ Who it's for - Sudoku and crossword solvers looking for something that actually uses arithmetic - Anyone who wants to deduce rather than drill - Parents and kids working through missing-digit problems for entrance exams - People building a small daily thinking habit - Anyone who needs a puzzle that works with no signal — trains, planes, anywhere