The heaviest world puzzle

Today we want to show you the most famous and the most difficult puzzle for which you do not need a little patience.

The most interesting problem is the game of




Go was invented in China more than 2, 5 thousand years ago, so this is one of the oldest games in the world. Despite the rather simple rules, it still attracts thousands of people the opportunity to solve interesting strategic objectives. The goal - to enclose the stones of the same color more territory than the opponent. The situation depicted above - one of the most difficult in the history of the first: her decision to experienced players have spent more than one thousand hours of playing time. How this party can win black?

The most difficult in the world of Sudoku



One of the most popular varieties in the world is a crossword puzzle Sudoku - Japanese puzzle with numbers. Its principle is simple, so many fans are trying to create their own versions. In 2012, the Finnish mathematician Arto Incal said that developed the "most difficult sudoku in the world».



According to British newspaper «The Telegraph», if the most simple variants of the common sudoku on a scale of complexity denoted as "1", and the most difficult of the popular estimate at "5", the version proposed by the mathematician pulls on "11".

The most difficult in the world sum-up-ku



One of the most popular varieties of sudoku is a sum-up-ku, it is also called "killer sudoku". The only difference is that in the sum-up-a-boo set additional number - the sum of the values ​​in a group of cells with the numbers contained in the group, should not be repeated. The popular service Calcudoku.org puzzles can be traced ranking published by the complexity of problems, one of them was the sum-up-ku, which is shown here.

The most difficult "problem recognition" Bongard



This type of puzzle invented the famous Russian cybernetics, founder of the theory of pattern recognition Moiseevich Michael Bongard: in 1967, he first published one of them in his book, "The problem of recognition." The widespread popularity of "Bongard problems" found when the famous American physicist and computer scientist Douglas Hofstadter mentioned them in his work "Godel, Escher, Bach: this endless garland».

The most difficult puzzle Calculator dock



This type sudoku like a sum-to-ku, but, firstly, to calculate the cell using any arithmetic operation, not only addition, secondly, the field may be the square of any size (the number of cells is not limited), and Third, unlike sudoku optionally be present herein tips from 1 to 9 in each square of 3 × 3. Such tasks developed a Japanese mathematics teacher Tetsuya Miyamoto.

The hardest puzzle Kakuro



Puzzle Kakuro combines the elements of Sudoku, logic, crossword puzzles and basic mathematical operations. The aim is to fill the cells with numbers from one to nine, with the amount of digits in each of the horizontal and vertical block must fit in with the specified number, and digits in one block shall not be repeated. For horizontal blocks of the required amount is recorded directly to the left, and for the vertical units - top.

One of the goals of Martin Gardner



American mathematician Martin Gardner - author of a number of different tasks and puzzles. One of the most interesting of his works - the calculation of the number for which you need a minimum number of steps to reduce it to a single digit numbers by the multiplication of this number. For example, the number 77 will require four such steps: 77 - 49 - 36 - 18 - 8. The number of steps Gardner calls "the number of resistance." The smallest number to the number of resistance equal to one, - 10, for the number 2, this resistance will be 25, with the lowest number of resistance 3 - 39, if the number of resistance is 4, the smallest number for him to be the smallest number 77. Is the number of resistance 5 ?

Difficult of puzzles Fill-A-Pix



Fill-A-Pix invented English mathematician Trevor Truran. This game is similar to the well-known "Minesweeper": the player must, guided solely by the logic to determine which cells need to be painted, and which will remain empty until the image does not work out. Since one cell affected by several key values, to obtain the final image will take some time.

Source: pervakov.livejournal.com