Logic Masters Deutschland e.V.

SELF REFERENTIAL SUDOKU by Rodolfo Kurchan Normal Sudoku rules apply There are ten self-referential numbers, nine in the 9 rows and one in the 5th column. In the black circles one number is the double of the other number. In the white circles one number is the triple of the other number. Not all circles are shown in the board. Example of self-referential numbers: Each digit is in his own position or shows the position where the digit should be. For example if 1 is not in his position, number 1 will be in the position of the number in 1st position Some self-referential numbers: 123456789 because each number is in his position 759428163 because as 7 is in position 1, in the position 7 goes number 1. As 5 is in position 2, 2 goes in position 5. As 9 is in position 3, 3 goes in position 9. As 4 is in position 4 is OK. As 8 is in position 6, 6 goes in position 8. Other self-referential numbers are: 391876542 596413872 725936184 832546917