Brain games

Logic puzzles are a pleasant way to spend a few focused minutes. Each game exercises a slightly different kind of thinking:

• Number logic: Sudoku, Futoshiki, Suguru.
• Letters: Wordoku, Sudoku played with nine letters.
• Arithmetic and logic: Killer Sudoku, Kakuro, Math Cages.
• Patterns and pictures: Nonograms, Binairo.
• Shading puzzles: Hitori, Nurikabe.
• Careful deduction: Minesweeper.

A daily puzzle for each game makes a nice routine. We don’t make medical claims; we just think puzzles are good fun.

All games

• Sudoku: Fill the 9×9 grid so every row, column and box has 1–9.
• Killer Sudoku: Sudoku with no starting numbers, only cages that add up to a total.
• Diagonal Sudoku: Sudoku where both long diagonals also hold 1–9.
• Math Cages: Fill a Latin square so each cage hits its target with +, −, × or ÷.
• Kakuro: A number crossword: runs of cells add up to the clue, with no repeats.
• Nonograms: Shade cells from the number clues to reveal a hidden picture.
• Minesweeper: Uncover the board without hitting a mine, using the number clues.
• Binairo: Fill with 0s and 1s: no three in a row, equal counts, no identical lines.
• Futoshiki: A Latin square with greater-than and less-than signs between cells.
• Suguru: Each region holds 1 to its size, and equal numbers can’t touch, even diagonally.
• Wordoku: Sudoku with nine letters instead of numbers. The letters spell a word.
• Hitori: Shade cells so no number repeats in a row or column.
• Nurikabe: Shade the sea so each numbered island has exactly that many cells.