What Is a Logic Puzzle? Parts, Kinds and a Worked Example
A logic puzzle gives facts and rules, and the answer follows by deduction alone. Its parts, its kinds, what makes a good one, and a classic solved step by step.
Riddle10 blog
Logic puzzles
Clues, rules and careful reasoning.
Logic puzzles give you a few clues and a firm set of rules, and the answer has to follow from them. These guides and answers cover truth-tellers and liars, grids, weighings and other classic types, with the reasoning shown one step at a time.
Start here: logic grid puzzles, knights, knaves and normals, seating arrangement puzzles
What Is a Maze Puzzle? Paths, Walls, Dead Ends and How to Solve One
A maze puzzle is a set of paths and walls with a start, a goal and dead ends. Learn its parts, its kinds, the graph view and how to find the shortest route.
Types of Riddles: Six Kinds and How to Answer Each
What-am-I, who-am-I, math, word, lateral thinking and trick riddles: how each type misleads you and the first move that cracks it.
Types of Mechanical Puzzles: Slide, Jump, Pack, Cut, Match, Twist
The six types of mechanical puzzles, sorted by what your hands do: slide, jump, pack, cut and rearrange, colour-match and twist, with how to start each.
Pencil and Paper Puzzles: Four Kinds and How to Solve Them
Pencil and paper puzzles explained: placement on a board, tours, grid deduction and liar tables, each with a solved example and a first step.
Gear Train Puzzles: Which Way Does the Last Gear Turn?
Meshing gears turn opposite ways, so count the contacts. Learn why odd rings jam, how belts change direction, and solve a worked gear train puzzle.
Dot-to-Dot Path Puzzles: How to Join Every Dot Exactly Once
Join every dot once in a single path: count partners, fix forced links, use hop-length and arrow rules. With a worked row example and a practice grid.
Rook and Queen Tour Puzzles: How to Visit Every Square Once
Solve rook and queen tour puzzles: step and slide moves, open and closed tours, the snake plan, forced corner lines and a worked 5 by 5 example.
Map Colouring Puzzles: How to Use the Fewest Colours
Colour every region so neighbours differ, with as few colours as possible. Dots and lines, greedy colouring, backtracking, a worked map and a practice puzzle.
Knights, Knaves and Normals: Three-Type Logic Puzzles
Knights, knaves and normals puzzles with a truth-teller, a liar and a normal who can say either: a case method, a worked example and a practice puzzle.
Self-Referential Puzzles: How to Solve Statements About Themselves
Test every scenario and keep the one where each statement matches its own truth: liar claims, counting lists, self-counting sentences and sequences.
Seating Arrangement Puzzles: How to Solve Round and Row Tables
Fix one seat, place locked pairs, split into cases and test each clue. A worked round-table puzzle, the own-seat rule and a practice puzzle with answer.
Hat Colour Puzzles: How to Reason From What Others See
Solve hat colour puzzles by listing every pattern and striking out what each answer rules out. A worked example, the classic game and a practice puzzle.
How to Solve Pair-Matching Path Puzzles: Join Every Pair
Join equal numbers with paths that never cross and fill every cell. Learn corner and edge forcing, then try a worked puzzle and a practice grid.
How to Solve Star-Placement Puzzles: Stars That Never Touch
Place stars in every row, column and region so that none touch, even at corners. Five core moves, a worked five by five puzzle and a practice grid.
How to Solve Building Height Puzzles: Count What You Can See
Read edge clues as visible buildings, use the tallest-at-the-edge and cap rules, then follow a worked four by four building height puzzle and a practice grid.
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.
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.
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.