2021 WPF Sudoku and Puzzle GPs

Information and discussion on Puzzle Competitions
Puzzle_Maestro
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Re: 2021 WPF Sudoku and Puzzle GPs

Post by Puzzle_Maestro » Wed 21 Apr, 2021 3:34 pm

That would break the 4-way clue.

eratosthenes
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Re: 2021 WPF Sudoku and Puzzle GPs

Post by eratosthenes » Wed 21 Apr, 2021 3:34 pm

Thank you!

detuned
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Re: 2021 WPF Sudoku and Puzzle GPs

Post by detuned » Tue 27 Apr, 2021 10:43 am

Preliminary results for puzzle GP out although I don’t think much is going to change with errors and bonus this time round... I’m pretty chuffed to make the top 3 UK

2. Freddie Hand 798
8. James McGowan 674
23. Tom Collyer 571

Very strong UK results again... also making the top 50 are Sam and Neil, and a bit further back in the top 100 are Adam and Matthew

Puzzle_Maestro
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Re: 2021 WPF Sudoku and Puzzle GPs

Post by Puzzle_Maestro » Tue 27 Apr, 2021 12:02 pm

I purposely spent several extra seconds on each puzzle checking diligently, so I'm relieved that it paid off. Hopefully my error streak for this year has come to an end now...

detuned
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Re: 2021 WPF Sudoku and Puzzle GPs

Post by detuned » Sun 09 May, 2021 8:43 pm

It's worth mentioning that it's a sudoku GP weekend if you haven't already seen. If you finish up by tomorrow evening there's also a plan to host a video call for anyone who wants to chat about it: http://forum.ukpuzzles.org/viewtopic.php?f=3&p=16834

detuned
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Re: 2021 WPF Sudoku and Puzzle GPs

Post by detuned » Tue 11 May, 2021 1:15 pm

Some provisional results from the sudoku GP, which don’t look like they’ll change:

22. Sam Cappleman-Lynes 621.7
40. Tom Collyer 514
42. Freddie Hand 508

We also had Jeremy Kong in the top 100, and Matthew White just outside.

The top times were very speedy, perhaps reflective of a slightly smaller set of 13 puzzles - and Sam finally has his clean solve of everything, which is good to see. My solve of the killer was catastrophically stupid meaning I had to abort and leave it on the table, which is a pity as it was a nice puzzle with a very smooth flow. Entering the same answer code for both keys is something I’ll look to avoid in future! It only cost me 20 points and 4 places, so that’s a relatively light mistake compared to what I was fearing.

pinkagape
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Re: 2021 WPF Sudoku and Puzzle GPs

Post by pinkagape » Thu 20 May, 2021 6:26 am

Any ideas for Hiroimono for this weekend's Puzzle GP? I'm struggling to see good techniques and there's six of this type!

Puzzle_Maestro
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Re: 2021 WPF Sudoku and Puzzle GPs

Post by Puzzle_Maestro » Thu 20 May, 2021 7:00 am

If you want practice in the genre, head over to puzz.link. There are a few there under the name 'goishi'.

Feadoor
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Re: 2021 WPF Sudoku and Puzzle GPs

Post by Feadoor » Thu 20 May, 2021 8:19 am

Another possibility is to skip them all since there are plenty of points elsewhere! :lol:

detuned
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Re: 2021 WPF Sudoku and Puzzle GPs

Post by detuned » Thu 20 May, 2021 9:55 am

Big pointer double choco! There’s some good practice material here :)

https://www.theguardian.com/science/202 ... -chocolate

I’m not sure how a 173 point maxi loop found it’s way into this contest, but that’s probably worth highlighting as well

Puzzle_Maestro
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Re: 2021 WPF Sudoku and Puzzle GPs

Post by Puzzle_Maestro » Thu 20 May, 2021 10:18 am

It's worth mentioning that high-pointers are frequently overvalued, eg the variant yinyang in R2 and the no-Swiss slitherlink in R4. So it may well be worth going for the double choco and the maxi loop first.

detuned
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Re: 2021 WPF Sudoku and Puzzle GPs

Post by detuned » Thu 20 May, 2021 3:26 pm

Yeah maybe… I’d roughly guess that at that valuation, it still implies the testers think this is going to be a 30 minute puzzle for a very good level of solver (top 50 at the WPC) - that’s almost unheard of for a competition puzzle.

I think that tells me two things: firstly it’s probably a very large grid size, and secondly there’s probably a clever global topological/connectivity argument (or equivalent novelty) you’re supposed to find. Maybe it’ll end up quicker points with that in mind?

detuned
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Re: 2021 WPF Sudoku and Puzzle GPs

Post by detuned » Wed 26 May, 2021 3:13 pm

Preliminary results for round 5 of the puzzle GP are out, which again I don't think are going to change (sadly I can't go back and slot in the trivially missing L from the statue park :( ). Here's the top 3

3. Freddie Hand 805
11. Neil Zussman 699
13. James McGowan 694

Sam was also just outside the top 20, I was just outside the top 50, and Adam also made the top 100.

Again, I'm planning on setting a zoom chat to discuss for anyone who wants to join. I'll post details separately but it'd be great to chat through some of these puzzles

detuned
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Re: 2021 WPF Sudoku and Puzzle GPs

Post by detuned » Thu 03 Jun, 2021 3:00 pm

Round 6 of the sudoku GP this weekend. I've enjoyed the last few rounds but going through this IB I think this has the potential to be my least favourite round so far. I guess we'll see. I'm planning on having a debrief on Zoom again next Monday for anyone who is interested!

detuned
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Re: 2021 WPF Sudoku and Puzzle GPs

Post by detuned » Tue 08 Jun, 2021 9:20 pm

Preliminary results for sudoku GP round 6 are out:

32. Sam Cappleman-Lynes 508
41. Mark Goodliffe 457
57. Jeremy Kong 423

Also in the Top 100 were Tom Collyer, Adam Bissett and Calum Mailer

I did not enjoy that round at all - repeatedly broke the irregular, and was slow on the scattered after time (don't think i was getting it in time). Also after time, I think the little killer required some rather contrived colouring on the 8s in order to break in as far as I can tell, which isn't particularly fun under time pressure (maybe I've missed something?). The last puzzle I had about as much fun with as I expected to have.

Feadoor
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Re: 2021 WPF Sudoku and Puzzle GPs

Post by Feadoor » Wed 09 Jun, 2021 5:49 am

The Little Killer didn't need anything quite so contrived - at the sticking point (or at least, what was the main sticking point for me) you can simply ask where 9 goes in column 9.

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