Sudoku and Logical Puzzles

CZECH OPEN 2018 - 2ndCompetition in Solving Sudoku and Logical Puzzles

21st July 2018

Organizer: AVE-KONTAKT s.r.o.

Festival director: Jan Zverina

Time schedule:

Saturday 21th July 09:30 - 10:00 Registration
  10:00 - 11:50 Puzzle Tournament Categories A/B – 2 Rounds
  12:00 - 13:50 Sudoku Tournament Categories A/B – 2 Rounds

14:10 - 14:30 Prize Giving


BASIC INFORMATION

- Anyone can participate without age and performance limitations (the category A contains harder puzzles designated for experienced players, the category B is more beginner-friendly).
- There are two separate competitions, a competition in solving sudoku and a competition in solving logical puzzles.
- Sudoku is a logical puzzle, the principle is to place numbers into the given grid so that they do not repeat in any rows, columns and outlined regions. In addition to this simple classical version there are various sudoku variants where numbers in cells have to comply with other given conditions (sums, parity, extraregions, bigger/smaller etc.)..
- Most logical puzzles come from Japan. The basic types of puzzles are Number Placement (Kakuro, Sudoku), Object Placement (Battleships, Starbattle), Shading (Tapa, Nurikabe), Region Division (Shikaku, Fillomino) and Loops/Paths (Masyu, Slitherlink).
- Solving logical puzzles does not require knowledge of foreign language.
- The competitor will be given a set of puzzles which he/she solves within given time limit.
- For each correctly solved puzzle the competitor will get the predetermined number of points (depending on the difficulty of the puzzle).
- If the competitor solves correctly all puzzles within the given time limit, he/she gets time bonus for each minute saved.
- Criteria used for ranking: the total number of points in two rounds.


DETAILED RULES

Competition process

The organizer will announce in advance tournament schedule and special conditions.

The player must arrive on time, sign in at the registration desk and take a seat. The seat is either individual or the table is separated by a partition.

The organizer opens the competiton, subsequently introduces tournament rules, scoring system and person appointed as the tournament referee.

Prior to each of the competition round the organizer will announce time limit and time bonus for submission before the time limit. The organizer will distribute the competition booklets and make sure that puzzles are not visible before the start of the round.

During each individual round competitors must remain silent not disturbing other competitors. It is strictly forbidden to use any electronic devices.

The organizer keeps an eye on the time throughout the competition rounds, reminds competitors its remaining amount in a respectful way, and gives the signal when the time is over. After that, the competitor has to stop solving immediately, otherwise he/she may face disqualification.

If the player is sure that some puzzle has no solution within the given set of rules, he/she can get full credit of points by clear indicating that the puzzle is not valid next to it. If some puzzle has more than one valid solution, full points will be awarded for any solution that satisfies the given set of rules.

 

Booklets checking and dealing with protests

Players are asked for re-checking their competition booklets which were handed them out after the evaluation by the organizer. They are allowed to make an objection if they find their booklets evaluated incorrectly. The deadline for players’ objections is up to 10 minutes following the distribution of booklets from the last competition round.

If the protesting player is not satisfied with the verdict of the organizer, the matter will be passed to the tournament referee. The referee will decide either alone or is allowed to cooperate with a committee consisted of experienced players formed by himself/herself.

If the protesting player is not even satisfied with the verdict of the tournament referee, he/she can file a protest to the board of the  HALAS - Czech Puzzle Association. The board has to make a decision in 10 days and inform about it both the player and the organizer. If its decision affects tournament results, all players will be informed on the website of HALAS - Czech Puzzle Association.

 

Scoring and ranking

The cover page of the competition booklet should contain a list of puzzles in that round and their points distribution. The points value of each puzzle is also written next to the puzzle.

The tournament ranking is determined by the sum of points awarded for correctly solved puzzles in all rounds and bonus points for submission before the time limit.

If the competition is called in category A and B, the tournament ranking will be determined for both of them. Category A tends to be aimed at experienced players, whereas category B is intended for less experienced players and newcomers.

 

Material prizes in all four tournaments.

Starting fee: 6,5 EUR

Discount on starting fee for youngsters up to 18 years of age and players over 65 years 50%

Registration during the competition.

 

Place:
Tipsport arena, Sukova trida 1735, Pardubice, connection from the railway station by trolleybus No. 3 and by bus No. 10, 16 and 17 (4th stop)