World’s hardest Sudoku solvable only by ‘sharpest minds’ created

Sudoku is a familiar challenge to newspaper readers and puzzle enthusiasts,requiring each vertical line,horizontal line and nine-square box to contain every number from one to nine.

While that might sound simple,the particular difficulty in this version lies in the number of deductions the player has to make in order to fill in a single number on the grid.

Instead of being able to spot where a number goes based solely on the boxes that have already been filled in,most moves will face you with two or more spaces where a number could fit.

Only one of these is correct,but to find it the player must examine all possible options for their next move and perhaps the move after that,continuing in the same vein until all but one potential route results in a dead end.

Inkala said that the most difficult parts of the grid require you to think ten moves ahead,exploring a series of permutations at each stage in order to eliminate all routes other than the right one.

“It is difficult to say if any one [puzzle is the hardest or not,because I believe the hardest one is not yet discovered,” he said.

“I am not sure if it is impossible to make,but there are so many possibilities to formulate that [I think the most difficult one has not yet been found,” he added. (ANI)