## Thursday, April 19, 2018

Double Kropki Sudoku puzzle is new Sudoku Variation which is going to be part of 4th round of World Puzzle Federation's Sudoku Grand Prix (GP) 2018. Double Kropki Sudoku is very interesting Sudoku variation for Kropki Sudoku. Rules of Kropki Sudoku puzzles are slightly changed to make it Double Kropki Sudoku. However solving path for Double Kropki Sudoku is very much different from Kropki Sudoku. In Double Kropki Sudoku, we need mark which cells will contain Even digit and which cells will contain Odd digits. Anyway this Double Kropki Sudoku, I posting for practice of Sudoku GP. This is the second Double Kropki Sudoku. Earlier Sudoku is published with title "Double Kropki Sudoku (Fun With Sudoku #309)" recently which also can be used for Sudoku GP practice. This Double Kropki Sudoku puzzle, I am publishing as part of Daily Sudoku League as 217th Sudoku Puzzle in this Series.

## Rules of Double Kropki Sudoku Puzzle

Standard Sudoku Rules apply. Additionally Adjacent cells containing numbers whose difference is 2 are marked with a white symbol. Adjacent cells containing numbers whose ratio is 4 are marked with a black symbol. Adjacent cells with no marking must not contain numbers either whose difference is 2 or whose ratio is 4.
 Double Kropki Sudoku Puzzle (Daily Sudoku League #217)
Answer of this Double Kropki Sudoku puzzle can be viewed by clicking on button. Please do give your best try to solve this Sudoku puzzle before looking at the answer.

This Double Kropki Sudoku puzzle, I am publishing as #217th Sudoku puzzle in The League of Extraordinary Ladies & Gentlemen. Here are the next and previous Sudoku puzzles published in this Sudoku series.

1. 11:25.Very professionally constructed.Hard and excellent practice !

1. Thanks Kishore! Your regular feedback helps and motivates me to create and post Sudoku puzzles daily.

2. 10.04 - nice one. Got a quick start in row 7 but the progress was still slow thereafter.

1. Yes, there is very interesting starting point in row 7 for this Sudoku puzzle.
Thanks Rakesh for your regular feedback.

3. 11:39, nice construction..

1. It was nice to get your comments on many of the Sudoku puzzles. Thanks to you.
Looking forward for your timings and feedback for the remaining Sudoku puzzles. Hopefully you are going to solve remaining puzzles soon.

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