OnlySudoku

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

Step 19

Let’s look at the bottom right box of the duoku table (where GHI cross PQR). We can’t put a 6 in cell IQ because there’s a 6 in cell IO. The only available cell is GQ.

1		7
5	4
9		6

3	4
6	2
8	7


		7
		4

4		1
3
8

2	6	8
9	5	4
7	1	3

		5
		8
4

2
6
7

	9	7
5		2
		6

5	Step19: 6	3
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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