How to Solve Loop Puzzles: The Inside and Outside Method
Draw one closed loop by the numbers. Label cells inside or outside, use zeros, corners and the dot rule, then try a worked and a practice puzzle.
Riddle10 blog
Articles about solving methods
How to Solve Latin Square Puzzles: Two Moves and a Worked Grid
Fill each row and column with every symbol once. Learn the only-candidate and only-place moves, a full worked grid and a practice puzzle.
How to Solve Picture Logic Puzzles: Fill-by-Number Grids
Read row and column clues as blocks, use overlap and exact fit, and reveal the hidden picture. A worked five by five puzzle and a practice grid.
Tangram Puzzle Solutions: A Step-by-Step Method
Place the large triangles first, read the corners and flip the parallelogram. Seven pieces, their size rules and nine verified tangram solutions.
Types of Logic Puzzles: Nine Kinds and How to Start Each
Grid, truth-teller, weighing, sliding tile, peg, knight's tour, packing, maze and sequence puzzles: what each logic puzzle type is and how to begin.
Logic Grid Puzzles: How to Solve Them With X and Tick
Mark X for no and tick for yes, use the only-one-left rule and chain clues across the grid. A full worked logic grid puzzle and a practice puzzle.
How to Solve Brain Teasers: 8 Tools and When to Use Them
Eight solving tools matched to the four types of brain teaser, with five worked examples and the mistakes that trip people up.
How to Solve the Knight's Tour Puzzle, Step by Step
Visit every square once with a knight: the move, open and closed tours, the colour rule, a smart rule of thumb, and fully worked 5x5, 6x6 and 8x8 tours.
How to Solve a Sliding Tile Puzzle, Step by Step
Top row first, then the left column, then repeat. A clear method for the 8-puzzle, the 15-puzzle and larger trays, with the trick for the last two tiles.
Truth-Teller and Liar Riddles: How to Solve Them
Assume, test, and look for the clue that rules out the mirror answer. A clear method for truth-teller and liar logic puzzles with worked examples.
How to Solve Coin Weighing Puzzles, Step by Step
Split the coins into three groups, not two. A clear method for balance scale puzzles, from 9 coins in 2 weighings to the classic 12-coin puzzle.
How to Solve Riddles: A Step-by-Step Method
A seven-step method for solving riddles: read twice, split the clues, name the type, question plain words, and test every answer. Worked examples.
How to Solve Water Jug Puzzles, Step by Step
Solve two-jug water puzzles with one loop: fill, pour, empty, repeat. Learn which amounts are possible, how to find the fewest moves, and practise.