SIXTY SIXY SUDOKU Problems by Shalosh B. Ekhad

SIXTY
SIXY SUDOKU PROBLEMS

SHALOSH B. EKHAD,

Sixy Sudoku problems, created by Peter Ritmeester, used to be published (until Oct. 20, 2019) in the New York Times magazine. The rules are like in the usual 9 by 9 Sudoku, but now the board is 6 by 6, divided into six 2 by 3 rectangles, and in addition there are extra regions outlined in bold. The solver has to insert the digits 1 through 6 just once in each a) row, b) column, c) bold outlined region and d) white or gray rectangle. The sixty problems in this web-book were computer-generated at random.

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

Problem 7

Problem 8

Problem 9

Problem 10

Problem 11

Problem 12

Problem 13

Problem 14

Problem 15

Problem 16

Problem 17

Problem 18

Problem 19

Problem 20

Problem 21

Problem 22

Problem 23

Problem 24

Problem 25

Problem 26

Problem 27

Problem 28

Problem 29

Problem 30

Problem 31

Problem 32

Problem 33

Problem 34

Problem 35

Problem 36

Problem 37

Problem 38

Problem 39

Problem 40

Problem 41

Problem 42

Problem 43

Problem 44

Problem 45

Problem 46

Problem 47

Problem 48

Problem 49

Problem 50

Problem 51

Problem 52

Problem 53

Problem 54

Problem 55

Problem 56

Problem 57

Problem 58

Problem 59

Problem 60