OnlySudoku

Step by step example of solving a level 5 (very hard) sudoku puzzle

Step 43

In this step, we use the same sudoku reasoning as the one in step 29, Let’s look at row D. We already found 8 out of the 9 numbers in this row, and the only missing number is 7. Therefore, the number 7 must be in DQ.

1	8	7
5	4	3
9	2	6

3	4
6	2
8	7

2		6
8		7
		4

4	9	1
3		2
8		5

2	6	8
9	5	4
7	1	3

3	Step43: 7	5
		8
4	2	9

2	1	8
6	3	9
7	5	4

4	9	7
5	8	2
1	3	6

5	6	3
7	4	1
9	8	2

Choose the Step

1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18
19	20	21	22	23	24	25	26	27	28	29	30	31	32	33	34	35	36
37	38	39	40	41	42	43	44	45	46	47	48	49	50	51	52	53	54

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