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Sudoku Tutorial 3 - Box Line Pointing

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Uploaded by on Apr 18, 2009

Demonstrates the "Box-line Pointing" strategy in solving a sudoku puzzle.

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Uploader Comments (dkmpuzzles)

  • At 1:40 number 5 is present in those 3 cells that you mention and also in block 6 where numbers that are possible in three cells in same column are 125689, 59,1258. Which 5 you decide to keep? the ones in block 6 or 9 ???? Why do you chose those in block 9???

  • @kmnagji The reason is that 5 can also appear in other columns in block 6 therefore it does not have to be in the highlighted column 7. In block 9, the 5 has to be in column 7 therefore it cannot be in column 7 in block 6 so we can remove it from column 7 in block 6.

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  • Wow.. thanks!

  • hi you are missing the 49/49 pair already in box 1 and the 56/56 pair in box 8 with negates most of the logic you are trying to show.

    cheers

    dave

  • it works very good

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