A Cleverly-Titled Logic Puzzle Blog: Puzzle 440: Twincognito 21

If you thought I'd go through this whole 17x17 puzzle series without subjecting you to a Twincognito, you are hopelessly naive.

Rules of Twincognito

Who's the author?

Grant Fikes has been writing logic puzzles in an amateur capacity since 2005, and in a professional capacity since 2013. He serves as one of the most prolific contributors to the blog on Grandmaster Puzzles; his works have also appeared in Akil Oyunlari, in Sudoku Xtra, the United States Puzzle Competition (2012-2014), and in a smartphone app. Grant has also created Kakuro puzzles for Kakuro Conquest (the puzzles haven't appeared yet, for whatever reason). As a word puzzle constructor, Grant's puzzles have appeared in the short-lived Will Shortz's Wordplay, in GAMES World of Puzzles, and in the smartphone app Bonza, and his creation Pent Words has won an award from Kadon Enterprises.

Excluding puzzles in the Logicsmith Exhibition series which were created by others, or where otherwise indicated, all puzzles on this blog are the intellectual property of Grant Fikes, and are released under a Creative Commons Attribution-Noncommercial 3.0 United States License.

Puzzle 440: Twincognito 21

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