Calcudoku puzzle forumhttps://www.calcudoku.org/forum/ Killer Sudoku 24 August 2019https://www.calcudoku.org/forum/viewtopic.php?f=19&t=1168 Page 1 of 1

 Author: paulv66  [ Sat Aug 24, 2019 11:19 pm ] Post subject: Killer Sudoku 24 August 2019 I really struggled with today's Killer Sudoku. I finally got it finished a couple of minutes ago, but I was concerned that my year to date streak was going to come to an end. I find that Saturday's difficult Killer is often as difficult as, if not more difficult than, Friday's.

 Author: michaele  [ Sun Aug 25, 2019 8:14 am ] Post subject: Re: Killer Sudoku 24 August 2019 I thought it was very easy for a Friday Killer Sudoku. It had a high difficulty rating, but the steps required to solve the puzzle are not complicated.I will list my method for solving the puzzle soon.

 Author: michaele  [ Sun Aug 25, 2019 8:41 am ] Post subject: Re: Killer Sudoku 24 August 2019 Oops, I got my dates mixed up, and I didn't read your post properly. Friday's Killer was very easy, I haven't done Saturday's, I will have a look at it now.

 Author: paulv66  [ Sun Aug 25, 2019 11:36 am ] Post subject: Re: Killer Sudoku 24 August 2019 I agree that Friday's difficult Killer was easier than usual. I see that Saturday's Killer has been solved fewer than 150 times, which is a lot lower than average. And I think this includes some people who submitted the puzzle since the solution was printed.Patrick, would it be possible to set the counter for number of times solved so that it freezes once the time limit for submitting for points has been passed?

 Author: michaele  [ Sun Aug 25, 2019 12:38 pm ] Post subject: Re: Killer Sudoku 24 August 2019 Here is my method for solving the 24/8 Killer Sudoku, (I use box to refer to any of the 3 by 3 cell areas that make up the puzzle)1. add cages in box a7-c9 >> c7=82. add cages in box c7-f9 >> f7=23. add cages in box g7-i9 >> h7=74. add cages in box g1-i3 >> g3=85. f9=7 (only cell in row 9 that can be 7)6. paired cells f2,f3 (1,4)7. d6 or d7 must be 18. f3 not 3 (refer to cages e1 & f5)9. f3 not 6 (refer cage f5) >> f4=510. a6 & b6 = 4,8 (only cells in row 6 with 4 & 8) >> a5=611. add cages in box a1-c3 (a3+c3=d1+5) >> d2=2,3,512. b2,b3 = 1,7 (only cells in box that can be 1)13. paired cells b2,b3 (1,7)The puzzle can now be solved with basic steps.

 Author: michaele  [ Sun Aug 25, 2019 12:47 pm ] Post subject: Re: Killer Sudoku 24 August 2019 For comparison, here are the steps required to solve the Friday 23/8 Killer Sudoku:1. Add cages in box a1-c3 >> c1=5,6 b3=8,9 >> d1 & d2=1,2,32. Add cages in columns 1-4 >> e8 & e9=4,5,6,7,8,9 3. Add cages in box d7-f9 >> e7 & f9=1,34. d7,d8 or d9 must be 2 (no other cells in that box can be 2) >> d1 & d2=1,3 >> c1=5 >> b3=95. cage a2 (13)=6,76. Add cages in box a7-c9 >> a7=5,8 c7=1,4Now we have 3 cells solved and pencil marks in only 10 other cells. The puzzle can now be solved with easy steps.

 Author: pnm  [ Sun Aug 25, 2019 1:06 pm ] Post subject: Re: Killer Sudoku 24 August 2019 Thanks, I'll compare these steps to what my solver says about the puzzles.For reference, the Friday (easier) puzzle:and the Saturday (harder) one:

 Author: sjs34  [ Mon Aug 26, 2019 10:20 am ] Post subject: Re: Killer Sudoku 24 August 2019 I agree that this Friday was unusually easy and this Saturday was unusually difficult. I didn't have time to see Saturday through to completion.

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