Hardest Sudoku Puzzle Ever Online

A calcudoku is similar to a killer sudoku except that 1 any operation can be used to compute the result of a cage not only addition 2 the puzzle can be any square size and 3 the sudoku rule of requiring the numbers 1 9 in each 3 3 set of cells does not apply. Our solver uses human logic to solve the daily puzzles so our single step help function shows the next easiest square to fill. The hardest calcudoku puzzle.

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A killer sudoku is very similar to a sudoku except that the clues are given as groups of cells the sum of the numbers in those cells.

Hardest sudoku puzzle ever online. Could this be the toughest sudoku puzzle ever devised. The miracle sudoku may be the hardest puzzle ever. The worlds hardest sudoku puzzle for those of us that never tire of a well made sudoku challenge finnish mathematician arto inkala has made what he claims is the hardest sudoku puzzle ever. Try to solve it yourself then watch the absolutely thrilling way to crack the code.

By alon harish june 29 2012 arto inkala a finnish mathematician designed this sudoku puzzle which he claims is the hardest sudoku yet. Now the bbc is getting in on the act with a show that s a mixture of sudoku and a general knowledge quiz. Number cruncher dr arto inkala has created this new challenge to rival the ai escargot grid he drew up in 2006 widely regarded as the. On the difficulty scale by which most sudoku grids are graded with one star signifying the simplist and five stars the hardest this puzzle would score an eleven he explained.

Sudoku solver solving the hardest puzzles. Identified in the same way as the killer sudoku presented in this article the hardest calcudoku was a 9 9 puzzle published on april 2 2013 which only 9 6 of the regular puzzlers at calcudoku. 73 of african americans said they did not have. Expert sudoku is a game for experienced sudoku players with a very high level of difficulty.

You can read about making this puzzle even harder on the physics arxiv blog. The original article can be downloaded here. Can you solve the hardest ever sudoku. Boolos called it the hardest logic puzzle ever.

It was invented by japanese math teacher tetsuya miyamoto who called it kashikoku naru. This hardest sudoku puzzle is characterized by the fact that only a few numbers are shown in the sudoku square which consists of 9 small squares where the cells are located 3x3. According to the finnish puzzle maker i called the puzzle ai escargot because it looks like a snail. The world s hardest killer sudoku.