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Logic grid puzzles →
Match people to things using a list of clues. One solution, always reachable without guessing, and one difficulty per book.
- Introduction
Logic Puzzles: An Introduction · Warm-Up to Medium
The 100 logic grid puzzles build from easy warm-ups to satisfying medium challenges, so no experience is needed to start. Clear clues, roomy grids, and a friendly how-to-solve guide.
- Easy
Logic Puzzles: Easy Puzzles
All 100 logic grid puzzles sit comfortably in the easy range — a relaxed pace from the first page to the last. Clear clues, roomy grids, and a friendly how-to-solve guide.
100 puzzles
Details - Medium
Logic Puzzles: Medium Puzzles
All 100 logic grid puzzles land in the medium range — meaty enough to make you think, and always fair. Clear clues, roomy grids, and a friendly how-to-solve guide.
100 puzzles
Details - Hard
Logic Puzzles: Hard Puzzles
All 100 logic grid puzzles are built to test you: longer chains of deduction and clues that make you work for every answer. Clear clues, roomy grids, and a friendly how-to-solve guide.
100 puzzles
Details - Expert
Logic Puzzles: Expert Puzzles
All 60 logic grid puzzles are the toughest we make by size alone: the longest chains of reasoning and the most demanding deductions. Clear clues, roomy grids, and a friendly how-to-solve guide.
60 puzzles
Details - Devious
Logic Puzzles: Devious Puzzles
The 80 logic grid puzzles teach three new kinds of clue — conditionals, a planted lie, and statements you have to count — one at a time, with room to practise each, then put all three to work together at full size. Clear clues, roomy grids, and a friendly how-to-solve guide.
80 puzzles
Details - Fiendish
Logic Puzzles: Fiendish Puzzles
All 60 logic grid puzzles use every trick we have at once: conditional clues, one false clue per puzzle, and groups where only some statements are true. Still solvable by pure logic — just not gently. Clear clues, roomy grids, and a friendly how-to-solve guide.
60 puzzles
Details - Unfair
Logic Puzzles: Unfair Puzzles
All 60 logic grid puzzles put every devious clue type to work at once — conditionals, a planted lie, and statements you have to count — and then break the promise every other book here keeps: deduction alone will not finish them. Somewhere in each one you must pick a possibility, follow it, and find out. One solution each, and exactly one — but you will have to gamble to reach it. Clear clues, roomy grids, and a friendly how-to-solve guide.
60 puzzles
Details - Introduction
Murder Mystery Puzzles: An Introduction · Whodunit Logic Puzzles
Whodunit logic puzzles: work out who was in which room, with what — then unmask the murderer standing at the crime scene. The 100 cases build from easy warm-ups to satisfying medium challenges, so no experience is needed to start. Deduction only, never guesswork.
100 puzzles
Details - Easy
Murder Mystery Puzzles: Easy Puzzles
Whodunit logic puzzles: work out who was in which room, with what — then unmask the murderer standing at the crime scene. All 100 cases sit comfortably in the easy range — a relaxed pace from the first page to the last. Deduction only, never guesswork.
100 puzzles
Details - Medium
Murder Mystery Puzzles: Medium Puzzles
Whodunit logic puzzles: work out who was in which room, with what — then unmask the murderer standing at the crime scene. All 100 cases land in the medium range — meaty enough to make you think, and always fair. Deduction only, never guesswork.
100 puzzles
Details - Hard
Murder Mystery Puzzles: Hard Puzzles
Whodunit logic puzzles: work out who was in which room, with what — then unmask the murderer standing at the crime scene. All 60 cases are built to test you: longer chains of deduction and clues that make you work for every answer. Deduction only, never guesswork.
60 puzzles
Details - Expert
Murder Mystery Puzzles: Expert Puzzles
Whodunit logic puzzles: work out who was in which room, with what — then unmask the murderer standing at the crime scene. All 60 cases are the toughest we make by size alone: the longest chains of reasoning and the most demanding deductions. Deduction only, never guesswork.
60 puzzles
Details - Devious
Murder Mystery Puzzles: Devious Puzzles
Whodunit logic puzzles: work out who was in which room, with what — then unmask the murderer standing at the crime scene. The 80 cases teach three new kinds of clue — conditionals, a planted lie, and statements you have to count — one at a time, with room to practise each, then put all three to work together at full size. Deduction only, never guesswork.
80 puzzles
Details - Fiendish
Murder Mystery Puzzles: Fiendish Puzzles
Whodunit logic puzzles: work out who was in which room, with what — then unmask the murderer standing at the crime scene. All 60 cases use every trick we have at once: conditional clues, one false clue per puzzle, and groups where only some statements are true. Still solvable by pure logic — just not gently. Deduction only, never guesswork.
60 puzzles
Details - Unfair
Murder Mystery Puzzles: Unfair Puzzles
Whodunit logic puzzles: work out who was in which room, with what — then unmask the murderer standing at the crime scene. All 60 cases put every devious clue type to work at once — conditionals, a planted lie, and statements you have to count — and then break the promise every other book here keeps: deduction alone will not finish them. Somewhere in each one you must pick a possibility, follow it, and find out. One solution each, and exactly one — but you will have to gamble to reach it. A wrong branch always collapses into a plain contradiction.
60 puzzles
Details - Introduction
Detective Puzzles: An Introduction · Detective Logic Puzzles
Detective logic puzzles: work out who was where and how the theft was pulled off — then name the culprit at the scene. The 100 cases build from easy warm-ups to satisfying medium challenges, so no experience is needed to start. Deduction only, never guesswork.
100 puzzles
Details - Easy
Detective Puzzles: Easy Puzzles
Detective logic puzzles: work out who was where and how the theft was pulled off — then name the culprit at the scene. All 100 cases sit comfortably in the easy range — a relaxed pace from the first page to the last. Deduction only, never guesswork.
100 puzzles
Details - Medium
Detective Puzzles: Medium Puzzles
Detective logic puzzles: work out who was where and how the theft was pulled off — then name the culprit at the scene. All 100 cases land in the medium range — meaty enough to make you think, and always fair. Deduction only, never guesswork.
100 puzzles
Details - Hard
Detective Puzzles: Hard Puzzles
Detective logic puzzles: work out who was where and how the theft was pulled off — then name the culprit at the scene. All 60 cases are built to test you: longer chains of deduction and clues that make you work for every answer. Deduction only, never guesswork.
60 puzzles
Details - Expert
Detective Puzzles: Expert Puzzles
Detective logic puzzles: work out who was where and how the theft was pulled off — then name the culprit at the scene. All 60 cases are the toughest we make by size alone: the longest chains of reasoning and the most demanding deductions. Deduction only, never guesswork.
60 puzzles
Details - Devious
Detective Puzzles: Devious Puzzles
Detective logic puzzles: work out who was where and how the theft was pulled off — then name the culprit at the scene. The 80 cases teach three new kinds of clue — conditionals, a planted lie, and statements you have to count — one at a time, with room to practise each, then put all three to work together at full size. Deduction only, never guesswork.
80 puzzles
Details - Fiendish
Detective Puzzles: Fiendish Puzzles
Detective logic puzzles: work out who was where and how the theft was pulled off — then name the culprit at the scene. All 60 cases use every trick we have at once: conditional clues, one false clue per puzzle, and groups where only some statements are true. Still solvable by pure logic — just not gently. Deduction only, never guesswork.
60 puzzles
Details - Unfair
Detective Puzzles: Unfair Puzzles
Detective logic puzzles: work out who was where and how the theft was pulled off — then name the culprit at the scene. All 60 cases put every devious clue type to work at once — conditionals, a planted lie, and statements you have to count — and then break the promise every other book here keeps: deduction alone will not finish them. Somewhere in each one you must pick a possibility, follow it, and find out. One solution each, and exactly one — but you will have to gamble to reach it. A wrong branch always collapses into a plain contradiction.
60 puzzles
Details - Introduction
Heist Puzzles: An Introduction · Heist Logic Puzzles
Heist logic puzzles: work out which thief cracked which vault, with what tool — then call the score. The 100 capers build from easy warm-ups to satisfying medium challenges, so no experience is needed to start. Deduction only, never guesswork.
100 puzzles
Details - Easy
Heist Puzzles: Easy Puzzles
Heist logic puzzles: work out which thief cracked which vault, with what tool — then call the score. All 100 capers sit comfortably in the easy range — a relaxed pace from the first page to the last. Deduction only, never guesswork.
100 puzzles
Details - Medium
Heist Puzzles: Medium Puzzles
Heist logic puzzles: work out which thief cracked which vault, with what tool — then call the score. All 100 capers land in the medium range — meaty enough to make you think, and always fair. Deduction only, never guesswork.
100 puzzles
Details - Hard
Heist Puzzles: Hard Puzzles
Heist logic puzzles: work out which thief cracked which vault, with what tool — then call the score. All 60 capers are built to test you: longer chains of deduction and clues that make you work for every answer. Deduction only, never guesswork.
60 puzzles
Details - Expert
Heist Puzzles: Expert Puzzles
Heist logic puzzles: work out which thief cracked which vault, with what tool — then call the score. All 60 capers are the toughest we make by size alone: the longest chains of reasoning and the most demanding deductions. Deduction only, never guesswork.
60 puzzles
Details - Devious
Heist Puzzles: Devious Puzzles
Heist logic puzzles: work out which thief cracked which vault, with what tool — then call the score. The 80 capers teach three new kinds of clue — conditionals, a planted lie, and statements you have to count — one at a time, with room to practise each, then put all three to work together at full size. Deduction only, never guesswork.
80 puzzles
Details - Fiendish
Heist Puzzles: Fiendish Puzzles
Heist logic puzzles: work out which thief cracked which vault, with what tool — then call the score. All 60 capers use every trick we have at once: conditional clues, one false clue per puzzle, and groups where only some statements are true. Still solvable by pure logic — just not gently. Deduction only, never guesswork.
60 puzzles
Details - Unfair
Heist Puzzles: Unfair Puzzles
Heist logic puzzles: work out which thief cracked which vault, with what tool — then call the score. All 60 capers put every devious clue type to work at once — conditionals, a planted lie, and statements you have to count — and then break the promise every other book here keeps: deduction alone will not finish them. Somewhere in each one you must pick a possibility, follow it, and find out. One solution each, and exactly one — but you will have to gamble to reach it. A wrong branch always collapses into a plain contradiction.
60 puzzles
Details - Introduction
Spy Puzzles: An Introduction · Spy Logic Puzzles
Spy logic puzzles: work out which agent was in which city, carrying what — then expose the double agent. The 100 assignments build from easy warm-ups to satisfying medium challenges, so no experience is needed to start. Deduction only, never guesswork.
100 puzzles
Details - Easy
Spy Puzzles: Easy Puzzles
Spy logic puzzles: work out which agent was in which city, carrying what — then expose the double agent. All 100 assignments sit comfortably in the easy range — a relaxed pace from the first page to the last. Deduction only, never guesswork.
100 puzzles
Details - Medium
Spy Puzzles: Medium Puzzles
Spy logic puzzles: work out which agent was in which city, carrying what — then expose the double agent. All 100 assignments land in the medium range — meaty enough to make you think, and always fair. Deduction only, never guesswork.
100 puzzles
Details - Hard
Spy Puzzles: Hard Puzzles
Spy logic puzzles: work out which agent was in which city, carrying what — then expose the double agent. All 60 assignments are built to test you: longer chains of deduction and clues that make you work for every answer. Deduction only, never guesswork.
60 puzzles
Details - Expert
Spy Puzzles: Expert Puzzles
Spy logic puzzles: work out which agent was in which city, carrying what — then expose the double agent. All 60 assignments are the toughest we make by size alone: the longest chains of reasoning and the most demanding deductions. Deduction only, never guesswork.
60 puzzles
Details - Devious
Spy Puzzles: Devious Puzzles
Spy logic puzzles: work out which agent was in which city, carrying what — then expose the double agent. The 80 assignments teach three new kinds of clue — conditionals, a planted lie, and statements you have to count — one at a time, with room to practise each, then put all three to work together at full size. Deduction only, never guesswork.
80 puzzles
Details - Fiendish
Spy Puzzles: Fiendish Puzzles
Spy logic puzzles: work out which agent was in which city, carrying what — then expose the double agent. All 60 assignments use every trick we have at once: conditional clues, one false clue per puzzle, and groups where only some statements are true. Still solvable by pure logic — just not gently. Deduction only, never guesswork.
60 puzzles
Details - Unfair
Spy Puzzles: Unfair Puzzles
Spy logic puzzles: work out which agent was in which city, carrying what — then expose the double agent. All 60 assignments put every devious clue type to work at once — conditionals, a planted lie, and statements you have to count — and then break the promise every other book here keeps: deduction alone will not finish them. Somewhere in each one you must pick a possibility, follow it, and find out. One solution each, and exactly one — but you will have to gamble to reach it. A wrong branch always collapses into a plain contradiction.
60 puzzles
Details - Introduction
Matchmaker Puzzles: An Introduction · Matchmaker Logic Puzzles
Matchmaker logic puzzles: work out who sat where and who paired with whom — then reveal the perfect match. The 100 mixers build from easy warm-ups to satisfying medium challenges, so no experience is needed to start. Deduction only, never guesswork.
100 puzzles
Details - Easy
Matchmaker Puzzles: Easy Puzzles
Matchmaker logic puzzles: work out who sat where and who paired with whom — then reveal the perfect match. All 100 mixers sit comfortably in the easy range — a relaxed pace from the first page to the last. Deduction only, never guesswork.
100 puzzles
Details - Medium
Matchmaker Puzzles: Medium Puzzles
Matchmaker logic puzzles: work out who sat where and who paired with whom — then reveal the perfect match. All 100 mixers land in the medium range — meaty enough to make you think, and always fair. Deduction only, never guesswork.
100 puzzles
Details - Hard
Matchmaker Puzzles: Hard Puzzles
Matchmaker logic puzzles: work out who sat where and who paired with whom — then reveal the perfect match. All 60 mixers are built to test you: longer chains of deduction and clues that make you work for every answer. Deduction only, never guesswork.
60 puzzles
Details - Expert
Matchmaker Puzzles: Expert Puzzles
Matchmaker logic puzzles: work out who sat where and who paired with whom — then reveal the perfect match. All 60 mixers are the toughest we make by size alone: the longest chains of reasoning and the most demanding deductions. Deduction only, never guesswork.
60 puzzles
Details - Devious
Matchmaker Puzzles: Devious Puzzles
Matchmaker logic puzzles: work out who sat where and who paired with whom — then reveal the perfect match. The 80 mixers teach three new kinds of clue — conditionals, a planted lie, and statements you have to count — one at a time, with room to practise each, then put all three to work together at full size. Deduction only, never guesswork.
80 puzzles
Details - Fiendish
Matchmaker Puzzles: Fiendish Puzzles
Matchmaker logic puzzles: work out who sat where and who paired with whom — then reveal the perfect match. All 60 mixers use every trick we have at once: conditional clues, one false clue per puzzle, and groups where only some statements are true. Still solvable by pure logic — just not gently. Deduction only, never guesswork.
60 puzzles
Details - Unfair
Matchmaker Puzzles: Unfair Puzzles
Matchmaker logic puzzles: work out who sat where and who paired with whom — then reveal the perfect match. All 60 mixers put every devious clue type to work at once — conditionals, a planted lie, and statements you have to count — and then break the promise every other book here keeps: deduction alone will not finish them. Somewhere in each one you must pick a possibility, follow it, and find out. One solution each, and exactly one — but you will have to gamble to reach it. A wrong branch always collapses into a plain contradiction.
60 puzzles
Details
More on the way. The line runs from Introduction up through Expert and three tiers past that, in six flavours each — from cozy everyday scenes to murder mysteries, heists and spy rings.