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Texas Jigsaw Killer (103) [AK-47] http://www.rcbroughton.co.uk/sudoku/forum/viewtopic.php?f=13&t=1488 |
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Author: | Mathimagics [ Sat Apr 13, 2019 4:10 am ] |
Post subject: | Texas Jigsaw Killer (103) [AK-47] |
Imagine, if you will, a movie called The Texas Chainsaw Zombie Massacre, in which the zombie killers are armed with weapons like this: AK-47 + chainsaw. This puzzle was inspired by this wacky idea (no, I tell a lie, I only found the picture because I thought of the puzzle concept, then searched for "Chainsaw + AK-47", and to my amazement found that page!). The puzzle is a standard Jigsaw Killer with "Anti-Knight" constraints. Anti-Knight means that no two cells that are a Knight-move apart can have the same value (a more elegant definition is that no two cells that are Manhattan distance 3 apart can be the same value). This puzzle is "AK-47" since it also forbids any pair of cells that are a Knight-move apart from having a 4 in one cell and a 7 in the other. This additional constraint is redundant - it is not actually necessary to solve the puzzle, but knowing that the solution has this property may help with the solving process. I constructed the puzzle this way so that it is still solvable by Sudoku Solver, which scores it as 0.9. Attachment: TJK-103-AK47.png [ 12.52 KiB | Viewed 6489 times ] SS definition: |
Author: | Mathimagics [ Sat Apr 13, 2019 4:12 am ] |
Post subject: | Texas Jigsaw Killer (103) [Print friendly] |
TJK-103-PF: |
Author: | Andrew [ Wed Apr 24, 2019 4:50 am ] |
Post subject: | Re: Texas Jigsaw Killer (103) [AK-47] |
This is a fairly easy puzzle; it should be P&P solvable but you may need a calculator at times unless you're exceptionally good at mental arithmetic. I haven't done many Anti-Knight (AN) puzzles, but I found using this easy for this puzzle. I decided fairly early not to use AN 4-7; it's slightly quicker using it but just as easy without it. Here is my walkthrough for Texas Jigsaw Killer 103: Solution: |
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