Logic puzzles

The Battleship puzzle (sometimes called Solitaire Battleships or Battleship Solitaire) is a logic puzzle based on the Battleship guessing game. It and its many variants often appear in puzzle contests, such as the WPC, and puzzle magazines, such as Games Magazine. ...more on Wikipedia about "Battleship (puzzle)"

The Cross Sums is a very common type of logic puzzle that is often referred to as a mathematical transliteration of the crossword. In principle, Cross Sums puzzles are integer programming problems, and can be solved using matrix techniques, although they are typically solved by hand. Cross Sums are regular features in most, if not all, math-and-logic puzzle publications in the United States; Dell Magazines uses the Cross Sums name, which was formerly unique to them but is now in common use among various publishers (although some other names, such as Cross Addition, are still used). In Japan, where the puzzle is called Kakro (カックロ), its popularity is immense, second only to Sudoku among Nikoli's famed logic-puzzle offerings; in an international tapdance, Kappa reprints Nikoli Kakro in the United States, in GAMES Magazine under the name Cross Sums. The Guardian in Britain began printing the puzzle under the name Kakuro in September 2005; since then many other British papers have followed suit and now also print daily puzzles. ...more on Wikipedia about "Cross Sums"

A dissection puzzle is a type of tiling puzzle. The solver is asked to dissect a given shape while fulfilling certain conditions. ...more on Wikipedia about "Dissection puzzle"

Divide by Squares ( Japanese:四角に切れ Shikaku ni kire) is a logic puzzle published by Nikoli. As of 2005, one book consisting entirely of Divide by Squares puzzles has been published by Nikoli. ...more on Wikipedia about "Divide by Squares"

Einstein's puzzle is a well-known logic puzzle. ...more on Wikipedia about "Einstein's Puzzle"

Fill-Ins are a type of logic puzzle commonly printed in various puzzle magazines. While they superficially resemble crossword puzzles, they do not require any form of "outside knowledge"; unlike a crossword, one can solve a Fill-In in a non-native tongue, even one with an alternate character set. ...more on Wikipedia about "Fill-In (puzzle)"

Fillomino (フィルオミノ) is a type of logic puzzle published by Nikoli. Other published titles for the puzzle include Allied Occupation. As of 2005, three books consisting entirely of Fillomino puzzles have been published by Nikoli. ...more on Wikipedia about "Fillomino"

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Many variations exist of the three objects (eg. wolf, goat and cabbage or fox, duck and sack of corn), but the central logic remains the same, being A eats B and B eats C. They are all part of the generic category of river crossing puzzles where the object is to move a set of pieces across a river subject to various restrictions. The answer in one lateral thinking variant has the goose swim across the river. ...more on Wikipedia about "Fox, goose and bag of beans puzzle"

Hashiwokakero (橋をかけろ Hashi o kakero; lit. "build bridges!") is a type of logic puzzle published by Nikoli. It has also been published in English under the name Bridges. It has also appeared in The Times under the name Hashi. ...more on Wikipedia about "Hashiwokakero"

Hexic is a type of puzzle game where one tries to rotate hexagonal tiles to create certain patterns. The game comes from mastermind Alexey Pajitnov, best known as the original creator of Tetris. The game is available online as part of the MSN games, as well as a downloadable deluxe edition. ...more on Wikipedia about "Hexic"

Heyawake ( Japanese: へやわけ, "divided rooms") is a binary-determination logic puzzle published by Nikoli. As of 2005, five books consisting entirely of Heyawake puzzles have been published by Nikoli. It first appeared in Puzzle Communication Nikoli #39 (September 1992). ...more on Wikipedia about "Heyawake"

Hitori (ひとりにしてくれ Hitori ni shite kure; literally "let me alone") is a type of logic puzzle published by Nikoli. ...more on Wikipedia about "Hitori"

Knights and knaves are a type of logic puzzle devised by Raymond Smullyan. ...more on Wikipedia about "Knights and knaves"

Light Up ( Japanese:美術館 bijutsukan) is a binary-determination logic puzzle published by Nikoli. As of 2005, one book consisting entirely of Light Up puzzles has been published by Nikoli. ...more on Wikipedia about "Light Up"

Logic mazes, sometimes called 'mazes with rules', are logic puzzles with all the aspects of a tour puzzle that fall outside of the scope of a typical maze. These mazes have special rules, sometimes including multiple states of the maze or navigator. Popular logic mazes include the rolling dice maze, tilt mazes, and other novel designs which usually increases the difficulty of the maze using the same area or less, sometimes to the point that the maze has to be designed by a program to eliminate multiple paths. ...more on Wikipedia about "Logic maze"

A logic puzzle is a puzzle deriving from the mathematics field of deduction. ...more on Wikipedia about "Logic puzzle"

Mastermind is a simple code-breaking board game for two players, invented in 1970 by Mordecai Meirowitz, an Israeli postmaster and telecommunications expert. The board game may have been inspired by moo, a computer program written in the late 1960s by J. M. Grochow at MIT in the PL/I computer language for the Multics operating system. ...more on Wikipedia about "Mastermind (board game)"

Masyu ( Japanese:ましゅ; translates as "evil influence", but see History) is a type of logic puzzle designed and published by Nikoli. The purpose of its creation was to present a puzzle that uses no numbers or letters and yet retains depth and aesthetics. It has yet to find a publisher outside of Japan, although similar mechanics are used in other puzzles published elsewhere. ...more on Wikipedia about "Masyu"

MindTrap is a game played by either individuals or teams of two or more. It is manufactured by the Great American Puzzle Factory under license from MindTrap Games, Inc.. Players are given a puzzle from a card and a limited amount of time to solve it. Players or teams win by being the first to move to the end of the scorecard. ...more on Wikipedia about "MindTrap"

The monkey and banana problem is a famous toy problem in artificial intelligence, especially logic programming. ...more on Wikipedia about "Monkey and banana problem"

Nikoli (ニコリ) is a Japanese publisher that specializes in logic puzzles. It is also the nickname of a quarterly magazine issued by the company (whose full name is Puzzle Communication Nikoli). ...more on Wikipedia about "Nikoli"

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Number Link is a logic puzzle published by Nikoli. As of 2005, two books consisting entirely of Number Link puzzles have been published by Nikoli. ...more on Wikipedia about "Number Link"

Nurikabe is a binary determination puzzle. The name is Japanese, in which it is written in hiragana (ぬりかべ); a "nurikabe" in Japanese folklore is an invisible wall that blocks roads and upon which delays in foot travel are blamed. Nurikabe was apparently invented and named by Nikoli; other names (and attempts at localization) for the puzzle include Cell Structure and Islands in the Stream. ...more on Wikipedia about "Nurikabe"

Paint by numbers are the first subset of picture logic puzzles, in which cells in a grid have to be colored or left blank according to numbers given at the side of the grid to reveal a hidden picture. In this puzzle type, the numbers measure how many unbroken lines of filled-in squares there are in any given row or column. For example, a clue of "4 8 3" would mean there are sets of four, eight, and three filled squares, in that order, with at least one blank square between successive groups. ...more on Wikipedia about "Paint by numbers"

The prisoners and hats puzzle is a logic puzzle that involves reasoning about the actions of other people, drawing in aspects of Game theory. There are many variations, but the central theme remains the same. ...more on Wikipedia about "Prisoners and hats puzzle"

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