Kropki Sudoku (the Polish word "kropki" means "dots"; also known as "Dots Sudoku") is the variation of the original sudoku. If absolute difference between two digits in neighboring cells equals 1, then they are separated by a white dot. If the digit is a half of digit in the neighboring cell, then they are separated by black dot. The dot between 1 and 2 can be either white or black.
| Author: Mykola Krylov |
| Publisher: CreateSpace Independent Publishing Platform |
| Publication Date: Apr 14, 2017 |
| Number of Pages: 270 pages |
| Language: English |
| Binding: Paperback |
| ISBN-10: 1545368961 |
| ISBN-13: 9781545368961 |