10/4/2023 0 Comments Extreme sudoku linkedThen navigate your way through the 2’s to 9’s. OBVIOUS ANSWERS … Start with the 1’s to see if there are any obvious 1-choice answers (a 1-choice answer means there is only one number of 1-9 that will work in that cell or there is only one choice for a number in a particular cell in a box, column, or row). Fill in the potential options for the unsolved cells Mark the unsolved cells with the options that cannot exist in those cellsĤ. Steps 6-8 are covered in detail, in Dan’s book.Īlso see Sudoku Puzzle Challenge… February 2016, Sudoku Puzzle Challenge–March 2016, Sudoku Puzzle Challenge–April 2016, May 2016, June 2016, July 2016, August 2016, September 2016, October 2016, November 2016, December 2016, January 2017 and February 2017.Īs a reminder, the basic rules of Sudoku are that the numbers 1-9 cannot be repeated in a row, column, or box, and there can only be one solution to a puzzle.įirst, we will complete the 4 steps of Puzzle Preparation …ģ. Steps 1-5 are relatively common techniques and are explained in the TI LIFE articles per above. Step 7: DAN’S CLOSE RELATIONSHIP CHALLENGE Step 4: XY-Wings & XYZ Wings – December, 2015 Step 3: Sudoku Gordonian Rectangles and Polygons – November, 2015 Step 2: Turbos & Interaction – October, 2015 Step 1: Sudoku Pairs, Triplets and Quads – September, 2015 Once you have completed the puzzle, to the extent that you have filled in all obvious answers and have written all potential options across the top of the unsolved cells (PUZZLE PREPARATION), Dan recommends the following steps to complete the puzzle. This will be a great chance to hone your Sudoku skills.įirst, we will revisit the approach as discussed in my first six TI Life articles.ĭAN’S 8 STEP APPROACH TO SOLVING ALL SUDOKU PUZZLES In the step-by-step explanation that follows you will see that we simply use Dan’s 8-Step Approach, which works every time! Whether you decide to solve the puzzle yourself or follow along, you may want to print Puzzle #23. Puzzle #23 will require advanced techniques. Please enjoy the journey as we tackle an extreme Sudoku puzzle!
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