Friday, 23 November 2018

World Puzzle Championship Puzzles - Round 3

I wrote a number of practice puzzles for myself, to help prepare for the World Puzzle Championships this year. I didn't have as much time to prepare, but it helped in the long run. Some people wanted to see them afterwards, so I promised to post them all on my blog.

I only really made puzzles for three rounds on the championship: Round 3, Round 6 and Round 12. This post contains puzzles from Round 3.
Most puzzles were overall a bit harder than the puzzles at the actual championship, because I took a bit more liberty with the design of most puzzles, especially in the amount of clues given. One puzzle ended up being broken, but I guess it still helped in a way to find out the logic in the genre.
For examples, please check the WPC instruction booklet.
3-5 Skyscrapers with Mirrors

Rules:
Place numbers from 1-5 and one mirror in every row so that they do not repeat in any row and column. These numbers represent heights of the buildings. The numbers around the grid indicate the number of buildings you can see from the given viewpoint. The building are visible only when it is higher than all the buildings in front of it, both in front of the mirror and reflected by the mirror.



3-6 Skyscrapers with GT Hints
Rules:
Place numbers from 1-5 in all the cells so that they do not repeat in rows and columns. These numbers represent heights of the buildings. The numbers around the grid indicate the number of buildings you can see from the given viewpoint. The building is visible only when it is higher than all the buildings in front of it. The skyscraper hints are not given however. You can only see the comparison between the hints and the first row of inner numbers and between some of the hints. (You do not need to fill all the hints at the borders to score the points)


3-8 Skyscrapers Myopia
Rules:
Place numbers from 1-5 in all the cells so that they do not repeat in rows and columns. These numbers represent heights of the buildings. The building is visible only when it is higher than all the buildings in front of it. The arrows point in all the directions where the number of visible buildings from that cell is highest.


3-9 Skyscrapers with Parks
Rules: Place numbers from 1-4 in some of the cells so that they do not repeat in rows and columns. One cell in each row and column remains empty. The numbers represent heights of the buildings. The numbers around the grid indicate the number of buildings you can see from the given viewpoint. The building is visible only when it is higher than all the buildings in front of it.


3-10 Skyscrapers with Glass Towers
Rules: Place numbers from 1-5 in all the cells so that they do not repeat in rows and columns. These numbers represent heights of the buildings. The numbers around the grid indicate the number of buildings you can see from the given viewpoint. The building is visible only when it is higher than all the buildings in front of it. One building in each row and column in invisible. The heights of invisible buildings are 1-5, each height exactly once.



3-11 Stroll among Skyscrapers
Rules:

Place numbers from 1-5 in all the empty cells so that they do not repeat in rows and columns (do not consider the numbers in grey cells). The numbers in white cells represent skyscrapers. The numbers in the grey cells indicate the number of visible skyscrapers in the direction of the arrow (the grey cells themselves are of zero height).


3-12 Skyscrapers - First Invisible
Rules:

Place numbers from 1-5 in all the cells so that they do not repeat in rows and columns. These numbers represent heights of the buildings. The numbers around the grid indicate the height of the first invisible skyscraper from the given direction. The building is visible only when it is higher than all the buildings in front of it.


3-13 Skyscrapers with Sum Baskets
Rules: 
Place numbers from 1-7 in all the cells so that they do not repeat in rows and columns. These numbers represent heights of the buildings. The numbers around the grid indicate the number of buildings you can see from the given viewpoint. The building is visible only when it is higher than all the buildings in front of it. In addition some baskets are outlined in the grid and sum of the digits in each basket is given. The numbers may repeat inside the basket.

3-14 Sky Snail

Rules: 
Place numbers from 1-4 in some of the cells so that they do not repeat in rows and columns. Two cells in each row and column remain empty. The numbers represent heights of the buildings. The numbers around the grid indicate the number of buildings you can see from the given viewpoint. The bulding is visible only when it is higher than all the buildings in front of it. In addition the numbers must follow the sequence 1,2,3,4,1,2,3,4,etc in the direction from the entrance of the maze toward the end inside.

3-15 Sky Coral
Rules:
Blacken some of the cells to create a coral. All black cells in must be orthogonally connected. There must be no 2x2 squares of black cells. And all white cells must be connected to the edge of the grid. There are some blocks of black cells in each row and column separated by white cells. The lengths of the blocks represent also their height. The numbers at the borders indicate how many blocks are visible from the given viewpoint.

3-16 Sky Battleships
Rules: 
Place standard fleet of battleships in the grid so that the ships do not touch each other not even diagonally. The size of the ship defines its height as well. The numbers around the grid indicate how many ships are then visible in the given row/column as in the skyscraper puzzle.


2 comments:

  1. Thanks for sharing these! Favourites were the glass skyscrapers and the coral.

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  2. Really nice set of puzzles. I like mostly first invisible, glass scyscrapers and mirror scyscrapes.

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