### Skyscrapers by Tom Collyer

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Theme: Twos-day

Author/Opus: This is the 18th puzzle from our contributing puzzlemaster Tom Collyer.

Rules: Standard Skyscrapers rules.

Answer String: Enter the 1st row from left to right, followed by a comma, followed by the 5th row from left to right.

Time Standards (highlight to view): Grandmaster = 1:00, Master = 2:00, Expert = 4:00

Solution: PDF

Note: Follow this link for other classic Skyscrapers. If you are new to this puzzle type, here are our easiest Skyscrapers to get started on.

• skynet says:

6:23

• chaotic_iak says:

02:09.

Nice puzzle with 2’s; I learned something today about observers seeing 2’s on the same row.

• James says:

Nice puzzle! But isn’t possible to rows A and B without using a few of the clues?

• drsudoku says:

Not sure what the exact comment is here (that A and B are “early” or that clues can be eliminated). Only the clue at the bottom of column 2 can be removed to still have one solution. With some of the multi-solution puzzles, A and B don’t change. Maybe that is your concern?

• James says:

Whoops, sorry for the typo. I meant A and B are early. The right 2 and two bottom 2s can be removed and still solve for A and B, I believe.

• Grant Fikes says:

I expressed the exact same concern in the test-solving spreadsheet, suggesting C4 and C5 for answer entry. I see that I should have been more intrusive and sent an e-mail instead!

• Tom Collyer says:

I now see exactly what you mean! Despite the small size of this puzzle, it seems even as the author there were still fascinating aspects of this grid that remained hidden from me. There are numerous non-trivial solving paths to this puzzle 🙂

• ApplePi says:

2:37

• Freddie Hand says:

Isn’t the puzzle still solvable without the second 2 on the bottom row?

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