Search found 194 matches

by david mcneill
Thu 17 Jun, 2021 7:17 am
Forum: Announcements
Topic: Results: 2021 UK Sudoku Championship
Replies: 3
Views: 264

Re: Results: 2021 UK Sudoku Championship

Yes, a lovely set of puzzles by Sam, maintaining the exceptionally high standards of the UKSC. I enjoyed the puzzles even more after the event. The Odd/Even had a very nice solving path which I missed during the competition. The solving paths in both the Diagonal and the Killer were beautiful. But t...
by david mcneill
Fri 11 Jun, 2021 12:41 pm
Forum: Announcements
Topic: UKPA Monday evening Zoom drop-ins
Replies: 20
Views: 1406

Re: UKPA Monday evening Zoom drop-ins

At the risk of intertwining quite different threads (see Deuteronomy 22:11), it was the contents that fell short of the mark.
by david mcneill
Tue 08 Jun, 2021 9:30 am
Forum: General Puzzle Discussions
Topic: Classic sudoku speed
Replies: 8
Views: 559

Re: Classic sudoku speed

I think one largely unspoken factor in classic Sudoku speed-solving is knowing when to start guessing and in having a good system of keeping track of tentative solving chains. Guessing isn't usually as beneficial in variants but is still an important last resort. I know on CtC there is ongoing bante...
by david mcneill
Tue 08 Jun, 2021 9:02 am
Forum: Announcements
Topic: UKPA Monday evening Zoom drop-ins
Replies: 20
Views: 1406

Re: UKPA Monday evening Zoom drop-ins

Sorry Tom.

I wasn't available to join you last night. Under instructions to augment my wardrobe.
by david mcneill
Wed 26 May, 2021 7:25 pm
Forum: Announcements
Topic: UKPA Monday evening Zoom drop-ins
Replies: 20
Views: 1406

Re: UKPA Monday evening Zoom drop-ins

I'm trying to join. Please let me know if there's any change of plan.
by david mcneill
Thu 20 May, 2021 1:22 pm
Forum: Puzzle Competitions
Topic: UKPA Masyu Contest 14 May - 19 May 2021
Replies: 16
Views: 2196

Re: UKPA Masyu Contest 14 May - 19 May 2021

My first attempt to set a Masyu contest. Delighted so many took part. Just over 100 competitors, of whom 42 got all the puzzles correct within the time. I was nervous beforehand about possible answer key errors and there were no fewer than 17 puzzlers who submitted answers for all 15 puzzles but mad...
by david mcneill
Sun 16 May, 2021 11:52 am
Forum: Puzzle Competitions
Topic: UKPA Masyu Contest 14 May - 19 May 2021
Replies: 16
Views: 2196

Re: UKPA Masyu Contest 14 May - 17 May 2021

Having become aware that some puzzlers have been having difficulty registering, I have extended the competition deadline by 48 hours. This means that solutions must be submitted no later than 11pm BST on Wednesday 19 May. The results of the competition will be published at 2pm on Thursday 20 May. I ...
by david mcneill
Tue 11 May, 2021 8:30 am
Forum: General Puzzle Discussions
Topic: Monday Evening UKPA puzzle drop-ins
Replies: 10
Views: 1685

Re: Monday Evening UKPA puzzle drop-ins

Sorry, I didn't catch this message. I wasn't free last night anyway. I'll try to join on another occasion. I'm a bit uncomfortable discussing the Sudoku and Puzzle GPs in my role as test solver. Definitely uncomfortable discussing my own Masyu contest. But there may be other stuff.
by david mcneill
Fri 07 May, 2021 10:10 am
Forum: Puzzle Competitions
Topic: UKPA Masyu Contest 14 May - 19 May 2021
Replies: 16
Views: 2196

Re: UKPA Masyu Contest 14 May - 17 May 2021

Sam,

Thanks for the question. The constraint in No Touch Masyu only applies to orthogonally adjacent cells. Unvisited cells are allowed to be diagonally adjacent. I had seen the name previously applied to puzzles with the same rule set. Hope there's no confusion.

David.
by david mcneill
Wed 05 May, 2021 7:22 am
Forum: Puzzle Competitions
Topic: UKPA Masyu Contest 14 May - 19 May 2021
Replies: 16
Views: 2196

UKPA Masyu Contest 14 May - 19 May 2021

This is the discussion thread for the upcoming UKPA Masyu Contest. UK and international competitors are welcome. Dates: Friday 14 May 2021 - Monday 17 May 2021 Duration: 90 minutes Puzzles: 15 puzzles, including 4 standard Masyu, 1 large Masyu and 2 each of 5 Masyu variants Instruction booklet: post...
by david mcneill
Sun 21 Mar, 2021 12:21 pm
Forum: Puzzle Competitions
Topic: Divisions A and B 2020-2021
Replies: 66
Views: 21404

Re: Divisions A and B 2020-2021

Probably won't (try to) solve the Saturday puzzle until tomorrow. I had a few nightmares already this week. The Ripple Loop turned out to be very hard and I didn't give myself a long enough window to solve it. Had to return to it over an hour later. The Magic Snail was another disaster as I didn't k...
by david mcneill
Wed 03 Mar, 2021 2:08 pm
Forum: Puzzle Competitions
Topic: UKPA Skyscrapers Contest 25 February - 2 March 2021
Replies: 14
Views: 5590

Re: UKPA Skyscrapers Contest 25 February - 2 March 2021

The results of the UKPA Skyscrapers contest are out. Congratulations to the 14 competitors who submitted correct solutions to all the puzzles. Ridiculously good solving from the Voigt brothers. Bragging rights to Roland on this occasion. Endo Ken completed the podium places but spare a thought for T...
by david mcneill
Thu 25 Feb, 2021 8:52 am
Forum: Puzzle Competitions
Topic: UKPA Skyscrapers Contest 25 February - 2 March 2021
Replies: 14
Views: 5590

Re: UKPA Skyscrapers Contest 25 February - 2 March 2021

Just a quick reminder that the UKPA Skyscrapers Contest is about to start. It's open right through to next Tuesday. Good luck to everybody planning to take part. Hoping for lots of happy finishers. Please don't discuss the actual puzzles until the contest is over.
by david mcneill
Wed 10 Feb, 2021 9:30 pm
Forum: Puzzle Competitions
Topic: Divisions A and B 2020-2021
Replies: 66
Views: 21404

Re: Divisions A and B 2020-2021

Well done Freddie and Neil. I hate loop puzzles and this was one of the most miserable experiences I have had in a long time. Like Adam and Matthew, I have no idea what is going on with a lot of the puzzles. Some I only solved by pure luck e.g. the funny Country Road one. The remaining puzzles are i...
by david mcneill
Wed 10 Feb, 2021 8:25 pm
Forum: Puzzle Competitions
Topic: UKPA Skyscrapers Contest 25 February - 2 March 2021
Replies: 14
Views: 5590

UKPA Skyscrapers Contest 25 February - 2 March 2021

This is the discussion thread for the upcoming UKPA Skyscrapers Contest. UK and international competitors are welcome. Because there is a Puzzle GP round on the same weekend, the competition window is slightly wider than usual. Dates: Thursday 25 February 2021 - Tuesday 2 March 2021 Duration: 2 hour...
by david mcneill
Wed 27 Jan, 2021 9:56 am
Forum: Puzzle Competitions
Topic: 2021 German Sudoku Qualifier (22.-25.01.21)
Replies: 7
Views: 3584

Re: 2021 German Sudoku Qualifier (22.-25.01.21)

I thought Mark and I had both done very well. But kudos to Sam and Tom for speedy test-solving. There were some great puzzles in the set. I particularly liked how the Average Arrow solved as I was dreading it beforehand. I struggled timewise with some of the standard variants - particularly Antiknig...
by david mcneill
Fri 11 Dec, 2020 12:14 pm
Forum: General Puzzle Discussions
Topic: Some puzzles for your solving pleasure
Replies: 27
Views: 24788

Re: Some puzzles for your solving pleasure

Sam, the one with the 123s on the diagonal.
by david mcneill
Wed 09 Dec, 2020 2:45 pm
Forum: General Puzzle Discussions
Topic: 8x8 Sudoku variant - Help required please
Replies: 5
Views: 3458

Re: 8x8 Sudoku variant - Help required please

This is certainly possible. It is not at all a difficult constraint to satisfy. I have found a solution in under 5 minutes.
by david mcneill
Tue 01 Dec, 2020 3:04 pm
Forum: General Puzzle Discussions
Topic: Some puzzles for your solving pleasure
Replies: 27
Views: 24788

Re: Some puzzles for your solving pleasure

I also enjoyed these. I forced myself to solve them logically. Very slow on one puzzle where the penny didn't drop for a while. Another puzzle was a work of pure evil - right up my street.
by david mcneill
Thu 02 Jul, 2020 7:27 am
Forum: Announcements
Topic: Results: 2020 UK Puzzle Championship
Replies: 7
Views: 11116

Re: Results: 2020 UK Puzzle Championship

Neil,

I set one of those at the airport. Just replace 6 by N where N is the size of the grid. It works quite well for N equals 7 or 8. I didn't go any further than that. I tried to set a puzzle called ALAN! but that wasn't working out too well.
by david mcneill
Thu 18 Jun, 2020 2:51 pm
Forum: Announcements
Topic: Results: 2020 UK Sudoku Championship
Replies: 2
Views: 6410

Re: Results: 2020 UK Sudoku Championship

Thanks to Tom and Sam for an outstanding set of Sudokus. Hard to fault any of them, but my favourite was the Diagonal. Had to solve it again afterwards to fully appreciate the lovely logic.
by david mcneill
Thu 21 May, 2020 3:21 pm
Forum: Puzzle Competitions
Topic: WPF Puzzle GP 2020
Replies: 67
Views: 54657

Re: WPF Puzzle GP 2020

No comment. :|
by david mcneill
Tue 21 Apr, 2020 7:16 am
Forum: General Puzzle Discussions
Topic: Some puzzles for your solving pleasure
Replies: 27
Views: 24788

Re: Some puzzles for your solving pleasure

I think the larger Group Sums appeared on CtC as well. Lovely puzzles, Sam. I took my time and solved them all logically. May not have spotted all the tricks, but very good fun during lockdown.
by david mcneill
Fri 20 Mar, 2020 10:49 am
Forum: General Puzzle Discussions
Topic: Some puzzles for your solving pleasure
Replies: 27
Views: 24788

Re: Some puzzles for your solving pleasure

Sam, thanks for putting these puzzles together. I haven't tried them yet but they look fantastic.

Do you think that we could all collectively think about publishing daily puzzles or weekly puzzle sets? Or monthly competitions?

Or is Cracking the Cryptic already doing enough?
by david mcneill
Sun 15 Mar, 2020 8:58 pm
Forum: Puzzle Competitions
Topic: UKPA Open Sudoku and Puzzle Tournaments 2020
Replies: 16
Views: 17369

Re: UKPA Open Sudoku and Puzzle Tournaments 2020

Just back from visiting my brother in Plymouth. Sorry to miss you all. Congratulations to Liane for organising this year after year. Hope it went well.