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Another Killer http://rcbroughton.co.uk/sudoku/forum/viewtopic.php?f=3&t=1569 |
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Author: | jbeck2862 [ Sat Jul 04, 2020 8:33 pm ] |
Post subject: | Another Killer |
I have completed another puzzle. Unlike my first puzzle, this one should be much harder. 3x3::k:2560:3329:3329:2562:0000:0000:0000:3331:3331:2560:0000:5124:2562:0000:3333:0000:0000:5894:0000:0000:5124:5124:5124:3333:1543:1543:5894:0000:2568:2568:0000:0000:0000:3081:5894:5894:0000:0000:1802:0000:0000:0000:3081:0000:0000:5387:5387:1802:0000:0000:0000:1292:1292:0000:5387:3597:3597:2318:4111:4111:4111:0000:0000:5387:0000:0000:2318:0000:2064:4111:0000:1041:3090:3090:0000:0000:0000:2064:2835:2835:1041: |
Author: | Ed [ Sun Jul 05, 2020 1:17 am ] |
Post subject: | Re: Another Killer |
Hi again JBeck2862 Unfortunately, according to JSudoku, Another Killer is not a valid puzzle because it has at least 2 solutions. Jsudoku ("Solve" menu then "Check Grid Validity") from http://jcbonsai.free.fr/sudoku/JSudoku.exe or http://jcbonsai.free.fr/sudoku/JSudoku.jar Cheers Ed |
Author: | jbeck2862 [ Sun Jul 05, 2020 1:58 am ] |
Post subject: | Re: Another Killer |
There is supposed to be a 5 in the central box. the code i pasted does not have one for some reason. |
Author: | Ed [ Sun Jul 05, 2020 6:56 pm ] |
Post subject: | Re: Another Killer |
OK, good. Here is the corrected code triple click code: Cheers Ed |
Author: | Andrew [ Mon Jul 06, 2020 4:06 am ] |
Post subject: | Re: Another Killer |
Just out of curiosity I imported Ed's code string into SudokuSolver. This puzzle has far more open space than any I've ever attempted; I'm surprised that it has a unique solution. I won't be trying it. Most Assassins have SS scores in the 1.5 to 2.0 range. However, if you can produce puzzles in that range, you're welcome as a new puzzle creator. I'm the opposite, I enjoying solving Killer Sudokus and some puzzles on the Other Variants forum, but I've never been tempted to try to create puzzles. |
Author: | HATMAN [ Mon Jul 13, 2020 5:07 pm ] |
Post subject: | Re: Another Killer |
More White Space - 34 In order to minimize cages I started with an easy 17 givens vanilla. I then made each given into a doublet. not surprisingly a lot of solutions after playing around a bit I got to a unique solution with 34 spaces and it is assassin level, SS gives it 1.55 and JS uses 8 big fishes. I'm sure it can be increased quite a bit but I have no idea of the maximum. I'll post this on the other site in case they have any views. Note I believe the minimum number of cages is 14, see viewtopic.php?f=3&t=804 JS Code: 3x3::k:13:2049:4098:14:2068:15:2308:2308:17:24:2049:4098:2068:25:3851:1541:26:1541:27:2579:2579:2068:3095:28:3851:1541:29:30:31:2579:3095:2310:1287:32:6166:33:3593:3593:34:35:2310:1287:36:6166:6166:3602:3602:3602:37:38:39:40:41:42:6154:6154:43:1544:1544:1544:44:45:2325:46:1548:6154:47:6147:48:49:2064:2325:50:1548:51:52:6147:6147:53:2064:2325: Solution: 239716548 457298361 861534729 573942186 682153497 914867235 796321854 348675912 125489673 |
Author: | Andrew [ Sat Jul 18, 2020 1:49 am ] |
Post subject: | Re: Another Killer |
Interesting puzzles, about Assassin level but not suitable for regular Assassins. More White Space 34 was the easier of these two puzzles; it doesn't have any 45s but is solvable mainly because most of the cages are within a nonet. I don't know JSudoku and very little about fishes. I used a number of forcing chains; I'd only call one of them moderate length, the rest were shorter. Here is my walkthrough for More White Space 34: Rating Comment: |
Author: | Andrew [ Sat Jul 18, 2020 1:57 am ] |
Post subject: | Re: Another Killer |
Then, having solved More White Space 34 I went back to HATMAN modification of J Beck's non-human-solvable killer. The harder of these two, even though it did have a few 45s. I was surprised at HATMAN's comment that JSudoku didn't use any fishes; I used some forcing chains, finding the right ones was the hardest part of this puzzle. Step 9b corrected; also a few minor changes. Here is my walkthrough: Rating Comment: |
Author: | wellbeback [ Fri Jul 24, 2020 1:28 am ] |
Post subject: | Re: Another Killer |
Yes - agree with the previous comments. I tried the original puzzle and got nowhere. For the first time in years I ran JSudoku and tried to follow what it did. No joy Anyway - thanks to jbeck for the original puzzle, and to HATMAN for the simpler version. After one tricky step at the beginning it all fell out quite easily for me, so I agree with HATMAN's comment in that 1.55 seems too high. Here's how I did it. Corrections thanks to Andrew. Another Killer WT: |
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