Logic Mastermind

A daily paper of logic puzzles, with hints that teach the technique, not just the answer. Every hint names the deduction it used and shows where it applies, so each puzzle leaves you a little better at the next one.

Every day the paper prints an edition of three puzzles, drawn from fifteen papers in three difficulties: Binairo (Takuzu), Star Battle, Tents, Skyscrapers, Futoshiki, Sudoku, Nonogram, Battleships, Minesweeper, Light Up, Kakuro, Slitherlink, Hitori, Nurikabe and Hashi. Each has a two-minute lesson. On Saturdays and Sundays a fourth page, the twist, prints one paper under one extra rule.

The results page ranks the day by race time, your friends' times print beside yours, and the fixtures page is the paper's sport section: races, the cup and games across the table.

Currently in closed testing. A Google Play listing follows.