OnlySudoku

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

Step 45

Let’s look at the right middle box (where DEF cross PQR). This solution step follows the same reasoning as in step 4. We have only one blank cell and one missing number. This is a sudoku inevitability. If we are correct so far, then the number 1 must be in cell EQ.

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	7	5
6	Step45: 1	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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