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  2. Numberlink - Wikipedia

    en.wikipedia.org/wiki/Numberlink

    In 1897, a slightly different form of the puzzle was printed in the Brooklyn Daily Eagle, in a column by Sam Loyd. [2] Another early, printed version of Number Link can be found in Henry Ernest Dudeney's book Amusements in mathematics (1917) as a puzzle for motorists (puzzle no. 252). [3]

  3. Missing square puzzle - Wikipedia

    en.wikipedia.org/wiki/Missing_square_puzzle

    Animation of the missing square puzzle, showing the two arrangements of the pieces and the "missing" square Both "total triangles" are in a perfect 13×5 grid; and both the "component triangles", the blue in a 5×2 grid and the red in an 8×3 grid. The missing square puzzle is an optical illusion used in mathematics classes to help students ...

  4. Str8ts - Wikipedia

    en.wikipedia.org/wiki/Str8ts

    A sample puzzle. Str8ts is a logic-based number-placement puzzle, invented by Jeff Widderich in 2008. [1] It is distinct from, but shares some properties and rules with, Sudoku. The name is derived from the poker straight. The puzzle is published in a number of newspapers internationally, [2] in two book

  5. Play free online Puzzle games and chat with others in real-time and with NO downloads and ... We tasted 5 crescent rolls — and this grocery store brand snagged the number 1 spot. Lighter Side.

  6. Strimko - Wikipedia

    en.wikipedia.org/wiki/Strimko

    Strimko is a logic number puzzle invented by the Grabarchuk Family in 2008. It is based on the idea of Latin squares described by the Swiss mathematician and physicist Leonhard Euler in the 18th century. All Strimko puzzles are solvable with pure logic; no special knowledge is required. Strimko uses only three basic elements: rows, columns, and ...

  7. Sujiko - Wikipedia

    en.wikipedia.org/wiki/Sujiko

    Sujiko is a logic-based, combinatorial number-placement puzzle created by Jai Gomer of Kobayaashi Studios. [1]A completed Sujiko puzzle. The puzzle takes place on a 3x3 grid with four circled number clues at the centre of each quadrant which indicate the sum of the four numbers in that quadrant.

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