Sudoku Tutorial 3 - Box Line Pointing
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Uploader Comments (dkmpuzzles)
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All Comments (5)
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Wow.. thanks!
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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
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it works very good
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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 5 months ago
@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.
dkmpuzzles 5 months ago