Common Mistakes in Thermometer SudokuThermometer Sudoku combines classic Sudoku rules with a visual sequence condition. Every row, column, and 3×3 box must contain the digits 1 through 9 without…Using Pencil Marks Effectively in SudokuSudoku pencil marks turn uncertainty into visible information. Instead of guessing which digit belongs in an empty cell, you record the candidates that remain…Interview With a Junior Logic Puzzle ChampionJunior logic-puzzle competitors often appear remarkably calm under tournament pressure. Behind that composure are hours of practice, careful reading, and a…What the 2024 World Puzzle Championship Finals RevealedThe 2024 World Puzzle Championship finals offered a clear picture of how modern competitive solving is evolving. At the highest level, success depended on much…Training drills for speed SudokuSpeed Sudoku is less about rushing than about making accurate decisions with minimal hesitation. A strong solver scans systematically, recognizes familiar…How to create your own Sudoku puzzleCreating a Sudoku puzzle combines mathematics, design, and careful testing. A finished grid may look simple, yet every empty cell must support a unique…Skyscrapers Puzzles: A Clear Starting PointSkyscrapers is a logic puzzle built around visibility. A square grid contains buildings of different heights, and numbers around the edges tell you how many…Puzzle Solving Warm-Up Routines That Sharpen Your FocusA good solving session often begins before the first serious puzzle. Whether you are preparing for a Sudoku competition, a logic-puzzle tournament, or a…The Rise Of Croatian Solvers On The World StageCroatia has developed a lively and increasingly visible community of Sudoku and logic-puzzle enthusiasts. What was once a specialist pastime is now supported…How to solve a killer Sudoku step by stepKiller Sudoku combines the familiar structure of a standard Sudoku with arithmetic clues. The grid is divided into outlined groups called cages, and the…