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Spiral puzzle from the Friesland Post. A spiral puzzle is a word puzzle in the form of a spiral. The puzzle is formed of a long chain of letters, which spell out a list of clued words when read in either direction. [1] The solutions to the left are entered in the boxes from 1 to 100.
LCS35 is a cryptographic challenge and a time-lock puzzle set by Ron Rivest in 1999. The challenge is to calculate the value = where t is a specific 14-digit (or 47-bit) integer, namely 79685186856218, and n is a specific 616-digit (or 2048-bit) integer that is the product of two large primes (which are not given).
A word search. A word search, word find, word seek, word sleuth or mystery word puzzle is a word game that consists of the letters of words placed in a grid, which usually has a rectangular or square shape. The objective of this puzzle is to find and mark all the words hidden inside the box. The words may be placed horizontally, vertically, or ...
The 24 puzzle is an arithmetical puzzle in which the objective is to find a way to manipulate four integers so that the end result is 24. For example, for the numbers 4, 7, 8, 8, a possible solution is ( 7 − ( 8 ÷ 8 ) ) × 4 = 24 {\displaystyle (7-(8\div 8))\times 4=24} .
An example Jumble-style word puzzle, where solving four anagrams allows the solver to then solve a fifth, using the circled letters of the previous answers Game designer Cliff Johnson defines a meta-puzzle as "a collection of puzzles that, when solved, each give a piece of a master puzzle."
The puzzle is studied by D. E. Knuth in an article on estimating the running time of exhaustive search procedures with backtracking. [2] Every position of the puzzle can be solved in eight moves or less. [3] The first known patented version of the puzzle was created by Frederick Alvin Schossow in 1900, and marketed as the Katzenjammer puzzle. [4]
Simply Jigsaw. Piece together a new jigsaw puzzle every day, complete with themes that follow the seasons and a super useful edges-only tool. By Masque Publishing
An American-style 15×15 crossword grid layout. A crossword (or crossword puzzle) is a word game consisting of a grid of black and white squares, into which solvers enter words or phrases ("entries") crossing each other horizontally ("across") and vertically ("down") according to a set of clues.