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Smoother transitions from completed puzzles to stamps. Achievements now appear with a sound after the stamp animation finishes. Fixed achievements unlocking during the tutorial and duplicate counting of replayed Free play puzzles. Loading appears only when needed. Its animation and progress bar finish together, then the puzzle opens immediately.
One number, one rectangle. Solve the grid in pencil; each board prints a stamp.
Pencil lines drawn on paper. Divide the grid into rectangles, match each rectangle to its number, and the sheet is done. Every finished board is printed as a stamp and filed in a monthly album. ■ What is Shikaku? Shikaku (also written sikaku, or "divide by squares") is a logic puzzle played on a grid of numbers. The rules are two lines: · Every cell belongs to exactly one rectangle. · Each rectangle contains one number, and that number is its cell count. There is always exactly one answer. Nothing has to be guessed. ■ One sheet a day A new sheet arrives every morning. The same date gives the same board on every device. Solve it late and it still fills that date. An empty day is not a failure — it is a space left open. ■ Hints that teach the reason A hint never places the answer for you. It names the one step that is certain right now, explains why in a sentence, and lights the cells the deduction rests on. Eleven techniques, learned one at a time. Reach a dead end and only the wrong blocks are removed; everything correct stays on the board. ■ Something stays in your hand A solved board is printed as a stamp, and the layout of your rectangles becomes its pattern, so no two stamps repeat. Stamps are filed by date in the monthly album, and boards with a notable shape fill entries in the pattern codex. ■ 12 notebooks, 240 sheets The Journey runs 12 notebooks of 20 sheets. Fill one and the next opens. Free play spans 5×5 to 13×15 across five pencil grades — HB, B, 2B, 4B and 6B. ■ Your desk Boards solved, share finished without hints, average time per board, longest run of days, and the techniques that still cost you hints — all on one screen, kept on your device. ■ How it feels Drag to draw a rectangle, tap to erase it. Four tools only: undo, redo, hint and wand. Touch, sound and haptics answer in the same frame. ■ Made for · Ten to twenty quiet minutes on a commute or before sleep · Sudoku and nonogram solvers looking for a new rule set · Anyone who likes a record that grows a little each day ■ Questions Q. Does it need an internet connection? No. Boards are generated on the device and work in airplane mode. Q. Can a board have more than one answer? No. Every board is checked for a single answer and for a pure logical path. Q. Is there a timer? None that pressures you. The clock is hidden by default; there are no lives and no failure state. Q. Which languages? English, 한국어 and 日本語. ■ Accessibility Large type, dark mode, contrast options and screen-reader support for the board.