tag:blogger.com,1999:blog-8823971303123593651.post846381219454988666..comments2023-03-31T05:24:27.406-07:00Comments on Kevin Schmidt's Blog: Difficult SudokuKevin Schmidthttp://www.blogger.com/profile/05366406313485961849noreply@blogger.comBlogger4125tag:blogger.com,1999:blog-8823971303123593651.post-45851187578289071132006-12-20T14:11:40.000-08:002006-12-20T14:11:40.000-08:00learned a bit more about sudoku. and finally solve...learned a bit more about sudoku. and finally solved it. I built a spreadsheet table to use as my scratch pad. In the end they fell into place so rapidly that I missed and had to backup about 8 steps to find my error.<br>I will to have to revisit this one in a week and see how well I do.<br>MikeTLivenoreply@blogger.comtag:blogger.com,1999:blog-8823971303123593651.post-68184565456295951592006-12-19T08:49:49.000-08:002006-12-19T08:49:49.000-08:00still working on the first one.I have started to l...still working on the first one.<br>I have started to lean into algebra to solve<br>a1+b1..i1=45<br>a1+a2...a9=45<br>a1+b1+c1+a2+b2+c2...c3=45<br>substituting the 38 variables I already know.<br>I need some double secret strategy at this point!<br>I dont want to resort to guessing and backtracking.<br>MikeTLivenoreply@blogger.comtag:blogger.com,1999:blog-8823971303123593651.post-51250231584655327952006-12-17T16:27:46.000-08:002006-12-17T16:27:46.000-08:00First one solved:2 3 7 8 4 1 6 5 99 1 6 7 5 2 3 4 ...First one solved:<br>2 3 7 8 4 1 6 5 9<br>9 1 6 7 5 2 3 4 8<br>5 8 4 6 9 3 1 2 7<br>6 7 3 2 1 5 8 9 4<br>4 5 8 9 6 7 2 3 1<br>1 9 2 3 8 4 5 7 6<br>3 2 9 1 7 8 4 6 5<br>8 6 5 4 3 9 7 1 2<br>7 4 1 5 2 6 9 8 3<br>Maxnoreply@blogger.comtag:blogger.com,1999:blog-8823971303123593651.post-78792028354294651852006-12-17T13:41:51.000-08:002006-12-17T13:41:51.000-08:00wow. the first sure is a sticky one.after the usua...wow. the first sure is a sticky one.<br>after the usual walk through, I only have 2 boxes that I know are correct.<br>and they aren't helping any more.<br>MikeTLivenoreply@blogger.com