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Is this a valid strategy? http://www.calcudoku.org/forum/viewtopic.php?f=3&t=866 
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Author:  marblevolcano [ Wed Jan 25, 2017 9:46 pm ] 
Post subject:  Is this a valid strategy? 
I came across something that (as far as I interpreted it) if you have 3 cells and one contains X or Y, the second is X or Z, and the third is X, Y, and Z, then you can eliminate X from the third. Is this correct? 
Author:  jaek [ Wed Jan 25, 2017 9:48 pm ] 
Post subject:  Re: Is this a valid strategy? 
First could be y and second could be z, so third could still be x. 
Author:  marblevolcano [ Wed Jan 25, 2017 9:53 pm ] 
Post subject:  Re: Is this a valid strategy? 
Yeah... I was using this in a puzzle and it didn't work, so I went back and checked without doing that. I thought it was correct at the beginning, but apparently not. Thanks jaek! 
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