a daily logic puzzle drawn in ink. put a finger on the ink dot and draw one continuous stroke through every square on the paper, ending on the red seal.

there is a catch, and it is the whole game. every square you enter costs a drop of ink. when the brush runs dry the stroke stops, halfway to nowhere. ink pools scattered across the board fill it again — so the question is never just which path covers everything, but which path covers everything and still reaches the next pool in time.

every puzzle has exactly one solution. no luck. no timers. no lives.

every morning

a new puzzle. monday is a warm-up. the week tightens. sunday is the long stroke. solve it, keep your streak, and share the result as a small ink-wash of how it went — without giving the answer away.

practice

four tiers — warm-up, regular, deep, sunday — with hundreds of puzzles for the days when one is not enough.

learn by drawing

three short lessons teach the whole game with your finger instead of a wall of text. stuck later on? pause, and the paper glows where to go next.

made to be quiet

warm paper, black ink, one red seal. no ads, no account, nothing counting down at you. the brush thins and frays as the ink runs out, so the stroke you leave behind is a record of how you thought.

kasure (かすれ) is the streaky, broken mark a brush leaves when it runs out of ink.