Tag Archives: variant

Puzzle 174: Slitherlink (Unequal Lengths), and Russian GP recap

This past weekend, the WPF hosted round 4 of the 2019 Puzzle Grand Prix, with puzzles by Russian authors. Puzzles/solutions/results are currently available under the previous link but should show up in the archive eventually. I’ll go over how it went for me below. One very interesting new variant on the test was “unequal lengths slitherlink”; here’s one:

Unequal-lengths slitherlink

[applet without answer check]

Rules Solve as a regular slitherlink. In addition, any two connected straight line segments must have different lengths.

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Puzzle 161: Semitransparent Snake

Next one, a Semitransparent Snake. This was hardly worth constructing, since the competition puzzle was only worth 20 points. Also the type is somewhat dreadfully confusing. But, enjoy!

A semitransparent snake puzzle.Rules Connect Start to Finish by a standard snake. Clues count the visible snake cells. Along any straight segment of snake cells (in the direction start to finish), every 4th cells is invisible (from both directions).

Or see the instruction booklet.

Puzzle 159: Inner Coral

Next WPC preparation puzzle, this one from round 5, Variations. You might as well call it a First Seen No-Islands Tapa.

An Inner Coral puzzle

Inner coral

Rules Shade some empty cells to form a Coral, compare Puzzle 27. The clue cells count as empty cells for the coral and can not be shaded. They indicate the lengths of the first blocks seen in each of the up to four directions.

Or better see the instruction booklet.

Puzzle 158: Skyscrapers with Mirrors

Another WPC practice puzzle here, again from the Skyscraper themed round. It’s a pretty nice variant, though somewhat susceptible to uniqueness arguments. (Try it without, though!)

A practice puzzle for the type Skyscrapers with Mirrors from WPC 2018.

Skyscrapers with Mirrors

Rules Fill each row and column with numbers from 1 through 5 as well as a single diagonal mirror. Clues act as regular skyscraper clues, but follow the mirrors.

Or see the instruction booklet.