RULES : Classic sudoku rules apply. Additionally, digits along the given lines read the same from either direction on the line.
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Puzzle No. 493: Classic Sudoku
Rules: Place a digit from 1 to 9 in each empty cell so that each digit appears exactly once in each row, column and 3x3 outlined box. Onl...
15:37, it was a magnificent sudoku with a very narrow breakthrough. The ending was also on tougher side. It's a kinda fun to solve such sudokus.
ReplyDeleteThanks shambo.
Delete10:46.Nice use of bulb logic at the end. Tough & very good one.
ReplyDeleteThanks Kishore. But what is the bulb logic ?
DeleteIn common parlance, it's called the Colouring technique wherein we determine the 'ON & OFF' status of a pair of digits all through the grid and then use that to "explosive effect"
DeleteFound it very tough. Had to make a guess. I took almost 30 mins on my phone :(. Please guide on how to solve.
ReplyDeleteThe number which comes in R2C3 has to come in R5C2. Then it has to come in R9C1. After manipulating a bit, u will get 6 in R7C2. That was the breakthrough of this sudoku.
DeleteOh wow! Excellent logic. Thanks very much Shambo. You are really good at this :). Mr.Akash, I can appreciate the awesome construction now.
DeleteThank you mam
DeleteVery tough but enjoyed, nice sir👍👍
ReplyDeleteThanks Anil Bhai
ReplyDelete13:47, superb creation. Some razor sharp deductions in there, loved it!
ReplyDeleteThanks aashay
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