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5 Star Sudoku Tutorial Part Two

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30. There is a 7 and 8 all ready in column nine so by deduction a 5 must go as illustrated in row three.

Now compare column to row. Column nine only has three numbers left- 2,3,4. What number can be placed in column nine based on looking at row five?

31. Answer: 2 because there is a 3 and 4 all ready on row five.

Row five- where does 8 go?
Hint: Compare block to row.

32. In row three place the missing 7 and 8.

33. Place the 7 in column eight. There is only one place it can go because there are 7s in column seven and column nine and block six needs a seven.


34. Place the 4 in block three.
Hint: Look at column eight.
35. Complete column seven.
36. Complete row five.
Hint: Look at column three.

37. Place 3 in block four.
Hint: Look at column one.

Where to now?
38. Because rows eight and nine only have 3 numbers remaining they are prime candidates.
Place the 3 in row eight.
Hint: Missing numbers- 3,4,6. Look at column six. See where 3 goes? There is a 4 & 6 all ready in column six so the 3 must go as shown in next graphic.
Place the 2 in row nine.
Hint: Missing numbers- 2,5,9. Look at column four. See where 2 goes? Same situation here. There is all ready a 5 & 9 in column four so the 2 goes as shown in next graphic.
39. Place 5 in column three.
Hint: Look at block one.
40. Place 9 and 2 in column three.
Hint: Last two numbers are 9 & 2. Look at row two to see a 9.
41. Current progress.

42. Column six is complete.

Finish block six.
Hint: Look at row six for a 3.

 

43. Finish block 4.

Hint: Row three and six will show you the placement of 4 & 5 in block four.

44. The rest is all yours.

Complete in this order: Block three, Block one, Column one, Row four, Row one, Row eight, Row seven, Row six, and finally Row two.

   
     

If your having troubles completing the puzzle, here are some specific steps. You may note that these don't match exactly with the order given in step 44, but it's a good illustration that there are multiple paths to solving the puzzle. But remember there is only one solution and no guessing is allowed! :)
- Finish block seven.
- Finish block three.
- Finish block one.
- Finish row one by placing 5,3,8.
- Place 1 in row two.
- Place 2 in row three.
- Place 8 in row six and then finish row six with 7, 9.
- Finish row four with 1, 6.
- Finish row two with 4, 7.
- Finish row seven with 4, 6.
- Last but not least, finish row eight with a 5,9.

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