Perplexible

It’s my birthday! Here’s two Sum Skyscrapers: one in European day/month/year format, and the other in American year/month/day format. They’re not wildly different, I just couldn’t decide which one to use.

Rules:

• Standard Skyscrapers rules.
• However, the clues give the sum – not the amount – of visible numbers.

Posted in Puzzle by ArDeeJ, 06/18/14 3:34 AM
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I haven’t seen this variant before, so I took the liberty of naming it. I wouldn’t be surprised if someone else had already invented it, though.

Rules:

• Unlike regular Sudoku, numbers do repeat in rows, columns and regions.
• Each row contains exactly one number twice, but the doubled number is different in each row.
• Also, each row is missing exactly one number, but the missing number is different in each row.
• The same applies to columns and regions.

For an easier puzzle, change the 5 in the top row into a 1. It’s not that hard, but getting used to the logic probably makes it harder.

EDIT: Corrected the rules. The old rules weren’t strict enough to guarantee an unique solution.

Posted in Puzzle by ArDeeJ, 06/2/14 11:44 AM
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