1) Please check this thread for any updates BEFORE you start the contest
2) Answer keys will be entered in a single box per question. Multiple keys should be separated by a comma, with no spaces, exactly as described in the IB & PB.
3) Puzzle examples have not been included in the contest PB, so you may want to keep the IB handy.
4) If there are any issues with the web hosting company, or website, during the contest after you have clicked START, please email me at email@example.com with your answer keys before your time is up. These will count as your official answers, with your completion time being when I receive the email. In all other cases, entries can only be submitted via the contest page.
5) UK participants only: If you have an emergency AFTER you have started, you can call me on 01313390028 to discuss.
6) If you wish to appeal over an answer key after your time is up, use the above email address use the comments box on your results page as soon as possible to register your appeal.
7) Ensure you have enough printer toner and paper before you start. (PB is 18 sides A4)
8) Do not discuss the puzzles here, or anywhere else until after the contest!
9) Good Luck!
PS. 10) I will publish a (short!) booklet with full puzzle solutions after the contest has completed.
Advisory (24/6/11 17:20):
- Update (24/6/11 21:20) Earlier issue resoved.
In response to requests for a longer contest window, please note that you will be able to start the contest any time after 3pm Friday 24 June. The last time for submissions remains as 3am Monday 27 June. (all times GMT+0100)
You will have a 2hr 30min window of your choosing over that weekend to correctly solve as many puzzles as you can.
The top eligible performer from the UK will be offered a place on the UK team for the 2011 World Puzzle Championship.
Any questions regarding the contest or puzzles should be posted below.
An overview of UK WPC team qualification is available here. Full details can be found here.
** errata/amendum summary from original puzzle booklet **
#2 UKPA Masyu: Answer key change: "Enter the length of of all horizontal segments that appear in each row top to bottom the marked rows ". Example:13,21,2,2,21,4 (for rows 1&5): 13,21
New amendments 22/6/11: (Revised IB available from contest page)
#7 Magnets: Amendum: The points for this puzzle have been increased to 30 (from 15), making the contest maximum = 400.
#12 Hidoku: Amendum: Answer key change. Now reads "Enter the last digit of each number appearing in the marked row/columns. Example (row 3, col 3): 5704,3306".. Anyone entering the answer in the originally declared answer key format will still be given full credit for a correct answer.
Minor amendments 20/6/11: (Revised IB available from contest page)
#3 Union Jack Maths:
Addendum: “:” symbol denotes division. Operations should be carried out in the order they appear in the sum. eg "8 - 4 : 2" = 2, not 6
#4/5 Turn of the 90s:
Addendum: Every white cell must be visited exactly once. You can only move to a neighbouring empty white cell on each step.
#8 Clueless Tents:
Amendum: example answer key corrected
#10 Chain Reaction:
Clarification: Patterns used in the contest puzzle are all monochrome, and easily distinguished.
#13/14 Easy as UKPA:
Addendum: The example shown has more than one solution. The contest puzzles have unique solutions.
#16 Spanish Armada:
Amendum. Instructions rephrased for clarity as follows:
"Locate all the ships of the Spanish Armada into the grid below. Numbers to the TOP and RIGHT of the grid indicate how many ship segments are present in that row/column. Ships cannot touch each other, not even diagonally. Each ship carries a number of cannons, (0,1 or 2 per ship segment) arranged as displayed in the diagram by the grid. The entire Armada fleet is shown. Numbers to the LEFT and BOTTOM of the grid indicate how many cannons are present in that row/column. Ships can be rotated. Ignore the letters around the grid when solving."
Also for #16:
Addendum: Any given ship segments can NOT be modified.
#17 Striped Snake:
Amendum – words black/white interchanged in original text
#19 Domino Castle:
Addendum: all dominoes must form a single connected structure. The example shown has more than one solution. The contest puzzle solves uniquely.