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Evil Sudoku Puzzles are made for those players who are extremely confident in their logic skills and believe to be experts by now. Hard puzzles have become a fun hobby and they are currently looking once again for the thrill of facing a seemingly impossible challenge.
The rules are still the same as ever, but the allocated clues at the start of the game are even more reduced. Working through the grid to find the solutions requires extreme attention, a lot of patience and an over-familiarity with the numbers.
These puzzles are not made for the weak hearted. Players should not attempt them unless they have already mastered the previous levels, as they might lose faith in their skills from the start and forfeit Sudoku completely.
Evil Sudoku Solving Techniques such as the Jellyfish or the Medusa can look more complicated and harder to understand than the puzzle itself. In reality, they derive from patterns created by hard level techniques.
If you do not want to clutter your mind with patterns seemingly coming out of an advanced mathematics book, the best way to tackle an evil Sudoku puzzle is by applying all your previously learned strategies.
Start with the ones you first used in the easy levels and work your way through the grid until you reach the XY-Wing technique. You are bound to find the solution of at least one cell by doing this. Since the grid of Sudoku is constantly evolving and finding the placement of a digit unlocks new possibilities each time, you must keep repeating these techniques. Try switching your way from easy to hard and hard to easy each time to keep finding the hidden numbers and setting new candidates for the cells.
This sounds easy in theory, but in practice, it will be hard to achieve. Patience and concentration are essential to complete an evil puzzle. You might also want to take breaks while solving it to give your eyes and brain a rest and come back to tackle it with a clear mind.
Taking notes is a requirement to solve an evil puzzle but remember to update and clean them each time you place a digit to try to make the game easier step by step. Most importantly, do not try to guess a solution or you can make the puzzle unsolvable and wreck your brain with something impossible.
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