Search found 117 matches
- Tue 26 Jan, 2021 6:58 pm
- Forum: Puzzle Competitions
- Topic: 2021 WPF Sudoku and Puzzle GPs
- Replies: 23
- Views: 747
Re: 2021 WPF Sudoku and Puzzle GPs
Sorry to sound silly, but by parity properties you mean like a checkerboard and it has to go white black white black? The observation I used for the example was that if you colour the grid as you say, all of the tens digits of the primes share a colour, and all of the units digits share a colour. A...
- Mon 25 Jan, 2021 3:38 pm
- Forum: Puzzle Competitions
- Topic: 2021 WPF Sudoku and Puzzle GPs
- Replies: 23
- Views: 747
Re: 2021 WPF Sudoku and Puzzle GPs
Oh no, I hope you have better luck for the puzzle GP. Thanks for the tips! I was wondering, though, what is the no battenburg rule? In Cave, you have two things to keep in mind: - The white cells must be connected - The black cells must all connect to the edge of the board Imagine you had a 2x2 squ...
- Fri 22 Jan, 2021 9:18 pm
- Forum: Puzzle Competitions
- Topic: Puzzle Ramayan and Sudoku Mahabharat 2021
- Replies: 0
- Views: 53
Puzzle Ramayan and Sudoku Mahabharat 2021
In the same vein as the GP thread, let's combine these two threads this year. The first Puzzle Ramayan round has started, and runs throughout the weekend.
https://logicmastersindia.com/live/?contest=PR202101
https://logicmastersindia.com/live/?contest=PR202101
- Tue 19 Jan, 2021 9:39 am
- Forum: Puzzle Competitions
- Topic: 2021 WPF Sudoku and Puzzle GPs
- Replies: 23
- Views: 747
Re: 2021 WPF Sudoku and Puzzle GPs
Preliminary results are out, the UK top 3 are: 32. Sam Cappleman-Lynes - 495 41. Jeremy Kong - 468 58. Tom Collyer - 412 The overall top 3 (Kota, Tantan and Tiit) are well clear of the rest of the field. Puzzles-wise, I did not regret my decision to just keep guessing at the endpoints of the lines i...
- Thu 14 Jan, 2021 9:15 pm
- Forum: Puzzle Competitions
- Topic: 2021 WPF Sudoku and Puzzle GPs
- Replies: 23
- Views: 747
Re: 2021 WPF Sudoku and Puzzle GPs
Yes - that's essentially all there is to it. Any clue in the range 1-4 must start with a 1, in the range 5-8 a 2 and so on. The rest is standard Sudoku and comparing the values within each range of four to get further restrictions. It can be a lot to keep track of so I strongly suggest crossing a cl...
- Thu 14 Jan, 2021 10:03 am
- Forum: Puzzle Competitions
- Topic: 2021 WPF Sudoku and Puzzle GPs
- Replies: 23
- Views: 747
Re: 2021 WPF Sudoku and Puzzle GPs
Sudoku Round 1 starts tomorrow, and the instruction booklet is available here: https://gp.worldpuzzle.org/content/instruction-booklet
- Thu 10 Dec, 2020 7:35 pm
- Forum: General Puzzle Discussions
- Topic: Some puzzles for your solving pleasure
- Replies: 25
- Views: 15297
Re: Some puzzles for your solving pleasure
As an aside, for us that are not great at solving Sudoku it would help if the grids were larger to give us more space for having to put candidates in etc. Thanks Liane, I'll bear that in mind in future. Tom/David, I'm glad you enjoyed them. They were a lot of fun to create. I am intrigued which one...
- Thu 10 Dec, 2020 9:32 am
- Forum: Puzzle Competitions
- Topic: Division C 2020-2021
- Replies: 14
- Views: 2585
Re: Division C 2020-2021
I'm only just getting round to looking at the examples for these: the diagonal fillomino example has two solutions, I believe (you can swap R2C3 and R3C2 in the given solution).
- Fri 27 Nov, 2020 11:53 am
- Forum: General Puzzle Discussions
- Topic: Some puzzles for your solving pleasure
- Replies: 25
- Views: 15297
Re: Some puzzles for your solving pleasure
I've been making some more puzzles. A whole bunch of Classic Sudoku this time. Enjoy!
- Mon 23 Nov, 2020 8:12 am
- Forum: General Puzzle Discussions
- Topic: Printing puzzles for contests
- Replies: 3
- Views: 846
Re: Printing puzzles for contests
This is an interesting question which as far as I know does not have a common consensus. There is some discussion and food for thought here: https://hausigel.de/blog/2020/03/08/screen-vs-paper/ Personally, if a contest is designed to be solved on paper, I think it's cheating. Not just because of fun...
- Tue 20 Oct, 2020 8:19 pm
- Forum: Puzzle Competitions
- Topic: Divisions A and B 2020-2021
- Replies: 11
- Views: 2296
Re: Divisions A and B 2020-2021
I haven't used the site so this is pure speculation, but my intuitive feeling is that anyone with a mouse is likely to be able to make accurate movements significantly more quickly than me using a trackpad.
- Mon 19 Oct, 2020 6:39 pm
- Forum: Puzzle Competitions
- Topic: Divisions A and B 2020-2021
- Replies: 11
- Views: 2296
Re: Divisions A and B 2020-2021
Regarding Puzzle Duel, I don’t see an issue with giving everyone the same solving medium. After a very interesting discussion about writing speeds and notations, I like the idea of levelling that particular playing field. If it doesn’t work well, we can change it for 2021-2022. It's only level if I...
Re: Hello
Don't worry, everyone else is baffled by that too.
- Sat 20 Jun, 2020 12:46 pm
- Forum: Puzzle Competitions
- Topic: UK Puzzle Championship 2020
- Replies: 16
- Views: 8345
Re: UK Puzzle Championship 2020
Thanks Liane :) 4. Yin Yang appears to be missing the rule about 2x2 areas In 8. Anglers, are all cells used by a fishing line? I think this is a standard rule but I have seen contests where it isn't used. What does "excluding directions pointing away from the edge of the grid" mean in 23. Panoramic...
- Thu 28 May, 2020 3:46 pm
- Forum: Puzzle Competitions
- Topic: Puzzle Ramayan - 2020
- Replies: 13
- Views: 9448
Re: Puzzle Ramayan - 2020
Very nicely done, Freddie!
- Thu 21 May, 2020 6:58 pm
- Forum: Puzzle Competitions
- Topic: WPF Puzzle GP 2020
- Replies: 67
- Views: 35241
Re: WPF Puzzle GP 2020
It doesn't read to me, Tom, as if anyone is shooting down your ideas or trying to have an argument. Just like you have expressed your views on the matter, so have others. No bad faith to my eyes.
- Tue 19 May, 2020 3:42 pm
- Forum: Puzzle Competitions
- Topic: WPF Puzzle GP 2020
- Replies: 67
- Views: 35241
Re: WPF Puzzle GP 2020
For a dissenting opinion, I find the puzzle GP rules to be written very clearly, and I think it's been particularly noticeable this year that there has been a push for consistent terminology between puzzle types and consistent phrasing of common rules - for example the definition that is used for a ...
- Tue 28 Apr, 2020 7:13 am
- Forum: Puzzle Competitions
- Topic: WPF Sudoku GP 2020
- Replies: 37
- Views: 23282
Re: WPF Sudoku GP 2020
I ended up eating my words about the Triple Sum Sudoku. When I came to it during the test I thought it didn't look as fiddly as other puzzles I've done of the type, so I gave it a go and flew through it.
- Mon 27 Apr, 2020 4:46 pm
- Forum: General Puzzle Discussions
- Topic: Some puzzles for your solving pleasure
- Replies: 25
- Views: 15297
Re: Some puzzles for your solving pleasure
That is what I did - maybe I did get it after all then! I was also looking at something for some clone interactions that might have involved the four cells at R5 C1,9 and R1,9 C5 for example. The polished way of looking at it is (ROT13): Vs gur zvqqyr nern vf gur rkgen ertvba, fb gung gur bgure gjb...
- Mon 27 Apr, 2020 3:49 pm
- Forum: General Puzzle Discussions
- Topic: Some puzzles for your solving pleasure
- Replies: 25
- Views: 15297
Re: Some puzzles for your solving pleasure
You can work it out using only the 1s.
- Mon 20 Apr, 2020 12:12 pm
- Forum: Puzzle Competitions
- Topic: WPF Sudoku GP 2020
- Replies: 37
- Views: 23282
Re: WPF Sudoku GP 2020
I'll have to get some practice in then!ashaash11ash wrote: ↑Mon 20 Apr, 2020 11:35 amAnd i think you are motivating me to author next year![]()
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- Mon 20 Apr, 2020 7:55 am
- Forum: Puzzle Competitions
- Topic: WPF Sudoku GP 2020
- Replies: 37
- Views: 23282
Re: WPF Sudoku GP 2020
You may revisit your opinion after seeing the competition puzzle for number 10, Freddie. They can be very fiddly, and may be given with a completely empty grid. Pure conjecture, of course, but I expect I won't enjoy that puzzle and will probably avoid it if at all possible. I'm somewhat relieved not...
- Mon 13 Apr, 2020 11:54 am
- Forum: General Puzzle Discussions
- Topic: Some puzzles for your solving pleasure
- Replies: 25
- Views: 15297
Re: Some puzzles for your solving pleasure
I'm back with some more puzzles. These are, I think, all quite difficult. Nonetheless, they are all logically solvable. Have fun!
- Mon 13 Apr, 2020 11:51 am
- Forum: General Puzzle Discussions
- Topic: UKPA featured in the Guardian!
- Replies: 2
- Views: 3760
Re: UKPA featured in the Guardian!
Nice puzzles - were you approached to write them specifically for the article, or were they pre-existing?
- Fri 10 Apr, 2020 8:02 am
- Forum: Puzzle Competitions
- Topic: Sudoku Mahabharat 2020
- Replies: 7
- Views: 6994
Re: Sudoku Mahabharat 2020
Round 4 results - two UK finishers:
37. Tom Collyer - 102.2 (87:46)
40. Sam Cappleman-Lynes - 100.7 (89:16)
51. Freddie Hand - 88.6
Have you been practising your Sudoku, Freddie?
The 9x9 Little Killer was obviously the big story of this test. It took me over 30 minutes to solve
37. Tom Collyer - 102.2 (87:46)
40. Sam Cappleman-Lynes - 100.7 (89:16)
51. Freddie Hand - 88.6
Have you been practising your Sudoku, Freddie?
The 9x9 Little Killer was obviously the big story of this test. It took me over 30 minutes to solve
