UK Puzzle Association

It's 39x7 because the numbers in each of the 7 rows sum up to 39.
Does it encrypt coordinates for geo-caching?
Maybe "o" is for "opaque", not for "empty".

It's hidden in the FAQ

Another national championship we missed. However, the puzzles are available online:
http://mcrsudoku.schak.cz/?q=cs/zadani

Inaba Naoki is one of the most creative puzzlesmiths today. On his Website "Inaba's Puzzle Laboratory" (http://inabapuzzle.com/honkaku/index.html) you can fiind more than 400 different puzzle types and 4~5 puzzles of each type. Most instructions are in Japanese only; only a few puzzles have also Eng...

According to a suggestion by Alan the puzzle event calendar now supports export of events in iCal-format. iCal can be imported into many mail/calendar programs (e.g. Outlook).

Another one we missed (I missed it too): http://ristikkotuumin.fi/ahaa/sm2011/

You should regularly have a look at the Puzle Event Calendar (http://www.janko.at/Puzzle-Events/). Alternatively, you can subscribe for mail notifications and/or RSS events.

I can confirm this. It seems that www.sudokucup.com is down.

Google is your friend - simply seach for »online scrabble server« or something similar.
One of the hits (I did'n try it): http://www.isc.ro/
This is also interesting: http://www.rackaroo.com/

The rules are almost the same, but the last sentence in the Mochinyoro rules reads: "The black cell must not cover an area of 2x2 or larger and must not be rectangular (or square). " (the bold half-sentence is missing in Mochikoro). Note that this is different from the 2x2-rule; it also excludes bla...

From my site: "Write a number into each cell of the diagram so that every room of size N contains each number from 1 to N exactly once. If the same number X is written twice in a row or column, there must be at least X other numbers between these two numbers. For example, between two cells with the ...

Thanks Alan! In Firefox and in Opera you should see an orange RSS icon in the address bar. Click on it and you will get a list of supported feeds. (I made a screenshot but images/attachments are disabled in this forum so I cannot provide it.) Google Chrome does not support RSS feeds; you would need ...

"They have also kindly offered a link to Google Translate to help with understanding the German instructions." -- In the last few days I translated all 120+ puzzle rules to English. Hopefully I did a better job than Google Translate does. If not, blame my English teacher ;-) (However, suggestions an...

I just added 16 new puzzle descritions to the Nikoli pages (rules in English and German, background information in German only, all with examples): Bodaburokku (ボーダーブロック), Bonsan ( ぼんさん) and Heyabon (へやぼん), Firumatto (フィルマット), Hakoiri (はこいり), Kojun (コージュン), Kuroshuto (クロシュート), Mejirinku (メジリンク), Nan...

Masyu: I think the "or both" is an improvement. In Latin, there are two different "or"s: "vel" is the inclusive "or" (detuned used) and "aut" is the exclusive "either-or". Unfortunately, there is no such distinction in most ouf our modern languages. We have a simple inclusive "or" and must express t...

Akari should -> must (also in all other descriptions, see http://www.faqs.org/rfcs/rfc2119.html :o) are adjacent to that cell -> are orthogionally adjacent to that cell Heyawake more than two rooms in a straight line -> more than two rooms in a horizontal or vertical straight line Nurikabe "conected...

In composing chess problems it is relatively frequently the case that the same chess puzzle is composed twice by different authors at different times – not seldom by composers which are above reproach. In this case the later problems are marked as "anticipated by <original-author>". For example: htt...

"The timer idea was so we could record the time a user took to solve a puzzle" -- This is implemented. All what you need are two additional params and the infrastructure on the server to record the timings. We should discuss this via email. "much more detailed instructions on usage" -- Yes and no. T...

I hope the user interface is intuitive enough. However, there are some nice features which may not be obvious - for example, dragging with the keyboard.

See http://www.janko.at/Applets/Guide.htm

~ÔttÔ~

Alan, You should disable the load/save buttons because they don't work in the ukpuzzles.org environment (set "f.save" to "no"). You should try to set "f.cursor" to "yes" at least for one applet. Maybe this is preferred by some users. "All we need is a timer" -- Why do you need a timer? There is alre...

"Otto registered here" -- yes, he did :-) "and the ones that don't [operate as smoothly and intuitively as the nikoli.com flash engine] are still pretty good" -- Thanks! Any ideas for improvement? "A quick caveat is that so far you can only have these puzzles working by invocation rather than integr...

If you are interested in the rules of 60+ Nikoli puzzle types you should check these links: http://www.janko.at/Raetsel/Nikoli/index-3.htm (with images) http://www.janko.at/Raetsel/Nikoli/index-2.htm (without images) The rules are in English and in German; background information is in German only.

The competition had to be postponed by one week due to technical problems. See also http://sudokucup.com/node/945

The Puzzle Event Calendar is now online. It is intended to be a central repository of all puzzle events worldwide; e.g. World puzzle/sudoku championships, national puzzle/sudoku championships and other puzzle competitions. http://www.janko.at/Puzzle-Events/ For more details see the info page: http:/...

Karel confirmed (per mail) that Sudoku-Cup #5 will be held on 29.-30.01.2011