Paw & Paper: Logic Puzzles

Chengdu Jiatong Technology Co., Ltd

About this game

Six logic puzzles, one paper notebook. No ads, no accounts, no internet.

Every puzzle in here can be reasoned out. Not one of them needs a guess — each is generated offline and checked to have exactly one solution before it ever reaches your screen.

WHAT'S INSIDE
• Cat Patrol — 200 fixed levels. One cat per row, per column and per colour region, and no two cats may touch, not even at the corners.
• Classic Sudoku — the 9x9 you already know, three ladders of difficulty.
• Cat Nonogram — 14 hand-drawn pictures. Fill squares by the numbers along the edges and a cat surfaces.
• Cats & Fish — half and half on every line, never three of the same in a row, with = and != clues.
• Killer Sudoku — dashed cages, each adding up to its number, no repeats inside.
• Cat Stroll — one unbroken path, in order, through every square on the board.

BUILT TO BE PUT DOWN
The clock starts on your first move, not when the app opens, and it pauses the second you switch away. Every board saves itself, so you can walk out mid-puzzle and come back next week to the same board.

A TUTORIAL THAT ACTUALLY SOLVES
Cat Patrol's four lessons are not a slideshow. A solver works the real board alongside you and every prompt is a rule you can reuse on your own the next level. Replay them any time, or skip them entirely.

QUIET ON PURPOSE
Warm paper, pencil lines, a cat doodled in the margin. Sound and vibration each have their own switch. Nothing flashes, nothing nags, nothing counts down.

NOTHING LEAVES YOUR PHONE
No sign-in, no analytics, no network code at all. Your progress lives on your device and nowhere else.

Chinese and English, both hand-written rather than machine-translated.

Works fully offline — on a plane, in the metro, anywhere with no signal.
Keywords people search for and what they map to here: nonogram (picross, hanjie, griddlers) is Cat Nonogram; queens-style one-per-region logic is Cat Patrol; killer sudoku with cages is included alongside classic sudoku; the one-line path puzzle (zip / hamiltonian stroll) is Cat Stroll; the tango-style balanced-row puzzle is Cats & Fish. All are brain teasers you solve by logic, never by luck.

What’s new

New Release