OnlySudoku

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

Step 13

Let’s look at the bottom right box of the duoku table (where GHI cross PQR). We can’t put a 7 in cell IQ because there’s already a 7 in cell IJ on the same row. We can’t put 7s in row G of this box, because there’s already a 7 in cell GO. Therefore, sticking to our sudoku rules, the only available cell for a 7 in this sudoku box is HP.

1		7
5	4
		6

3	4
6	2
8	7



		4

4		1
3
8

2	6	8
9	5	4
7	1	3

		5
		8
4



7

	9	7
5		2
		6

5
Step13: 7	4	1
9		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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