Free Logic Puzzle Games

Logic puzzles are the quiet, satisfying kind: no timer pressure unless you want it, no luck involved, just you and a solvable board that always has one right answer if you reason carefully enough. This collection gathers the deduction puzzles on the site for anyone who likes to think a few steps ahead. Fill a Sudoku grid without a contradiction, clear a minefield from the numbers alone, paint a hidden picture in a nonogram, slide the jammed blocks aside to free the trapped one in Unblock, connect every pair and fill every square in Flow, push crates onto their targets in sokoban, switch off every light, or crack a secret code in mastermind. Each one rewards patience and pattern-spotting rather than fast fingers, and every board is fair — the answer is always deducible, never a guess. They are free, run instantly in the browser with nothing to install, and save your progress locally so you can put a hard one down and come back to it. If you like the feeling of a puzzle clicking into place, start with any board below.