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Calcudoku with diagonals https://www.calcudoku.org/forum/viewtopic.php?f=16&t=548 |
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Author: | kozibrada [ Wed Feb 26, 2014 5:29 am ] |
Post subject: | Calcudoku with diagonals |
Hi, solvers, I was inspired one of speciality of sudoku – sudoku with diagonals. So I created such calcudoku. In both diagonals (gray lines) must appear each of numbers 1–7. Good solving… |
Author: | mparisi [ Wed Feb 26, 2014 6:02 pm ] |
Post subject: | Re: Calcudoku with diagonals |
kozibrada wrote: Hi, solvers, I was inspired one of speciality of sudoku – sudoku with diagonals. So I created such calcudoku. In both diagonals (gray lines) must appear each of numbers 1–7. Nice puzzle! Thanks. |
Author: | bram [ Thu Feb 27, 2014 3:16 am ] |
Post subject: | Re: Calcudoku with diagonals |
Groovy! With my beloved bitwise OR! |
Author: | nicow [ Thu Feb 27, 2014 10:53 am ] |
Post subject: | Re: Calcudoku with diagonals |
Nice puzzle. Indeed just 1 solution. |
Author: | clm [ Sun Mar 02, 2014 12:55 am ] |
Post subject: | Re: Calcudoku with diagonals |
Thanks for your effort, I have really enjoyed it. Very original puzzle, I also think that the solution is unique with the restriction imposed (the main diagonals). I like the symmetry of the diagram too (producing that particular set of numbers in the central H-shape cage). Considering that the solution is unique (even without the restriction), according to nicow (particularly myself I have not analyzed this) I would suggest that you "propose" it as user-defined puzzle (in the "Submit your own puzzles to the site") link. If you decide so, here is the code (if it is helpful for you): 11,+,a1a2b1 10,+,c1d1e1 12,+,f1g1g2 5,|,b2c2 28,x,d2d3 7,|,e2f2 11,+,a3a4a5 4,-,b3b4b5 81,^,c3c4c5d4e3e4e5 0,-,f3f4f5 15,+,g3g4g5 6,x,d5d6 16,+,a6a7b7 7,|,b6c6 5,|,e6f6 9,+,f7g6g7 11,+,c7d7e7 |
Author: | sjs34 [ Sun Mar 02, 2014 3:11 am ] |
Post subject: | Re: Calcudoku with diagonals |
I had a similar thought, knowing that if I were clever enough to construct such an excellent puzzle, I would have major difficulty with the code for submission. I then realized, though, that submissions are currently limited to addition, subtraction, multiplication and division. I hope Patrick will be able to change this when convenient. |
Author: | nicow [ Sun Mar 02, 2014 12:17 pm ] |
Post subject: | Re: Calcudoku with diagonals |
This is the first 'solution' my solver found. See the multiple 7's in the diagonal. So I added to the (new) model the restriction for diagonals; that's quite easy. clm is right, this is not a good 'solution'. |
Author: | clm [ Sun Mar 02, 2014 2:44 pm ] |
Post subject: | Re: Calcudoku with diagonals |
nicow wrote: ... This is the first 'solution' my solver found. See the multiple 7's in the diagonal. So I added to the (new) model the restriction for diagonals; that's quite easy. For this first solution you found, it is a little confusing for me how can you get the result 81^ in the central H-shape cage, that is, in which sequence of the operation ^ . |
Author: | pnm [ Sun Mar 02, 2014 4:22 pm ] |
Post subject: | Re: Calcudoku with diagonals |
sjs34 wrote: I then realized, though, that submissions are currently limited to addition, subtraction, multiplication and division. I hope Patrick will be able to change this when convenient. In practice there is no such restriction, I only wrote that to try and make the submission page a bit more accessible. |
Author: | pnm [ Sun Mar 02, 2014 4:26 pm ] |
Post subject: | Re: Calcudoku with diagonals |
clm wrote: For this first solution you found, it is a little confusing for me how can you get the result 81^ in the central H-shape cage, that is, in which sequence of the operation ^ . Yes, I don't see that either. Here's a solution, one of 152 found by my solver: 5 4 3 1 6 7 2 2 5 1 4 7 6 3 6 1 5 7 3 2 4 4 2 7 6 1 3 5 1 7 4 3 2 5 6 7 3 6 2 5 4 1 3 6 2 5 4 1 7 Still something not quite right though, because it can't find a solution with different numbers on both diagonals |
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