About MeowSolver

A free solver and hint engine for the one-cat-per-row family of logic puzzles — built by a player, for players.

MeowSolver started as a personal tool. Colten, its builder, plays these puzzles on iOS and wanted something the games themselves don’t offer: hints that explain the deduction instead of just revealing a square, an importer that reads the board straight from a screenshot instead of demanding a tedious manual rebuild, and honesty about when a generated board has crossed from “hard” into “no human would find this.”

What makes it different

• Screenshot import. A small computer-vision pipeline detects the grid, the region colors, and any marks already on the board. It runs entirely in your browser — screenshots are never uploaded anywhere.
• Human-first hints. The hint engine tries techniques in the order a person would spot them, from “this region has one square left” up to full contradiction chains, and it draws its reasoning on the board. Every hint is verified against the puzzle’s unique solution before you see it.
• No account, no install, no tracking. One web page. It works on a phone in the checkout line.

The technology, briefly

The whole application is a single self-contained HTML file — no server, no framework, no build step. The solver is a constraint-propagating backtracker; the hint engine layers five named human techniques on top of it (the strategy guide documents each one). It runs the same everywhere from a desktop browser to iOS Safari.

Get in touch

Bug reports, misread screenshots, and ideas are all welcome — see the contact page. The footer of the solver shows a version number; including it with a bug report helps a lot.

MeowSolver is an independent, fan-made project. It is not affiliated with, endorsed by, or connected to Oakever Games (Meowdoku), LinkedIn (Queens), or any other puzzle publisher. All game names are used only to describe compatibility.