This is a Tapa puzzle.

Puzzle 356
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Tags: game, logic, problem, puzzle
This entry was posted on September 12, 2011 at 4:00 am and is filed under Tapa, [1] Mon/Tues. You can follow any responses to this entry through the RSS 2.0 feed.
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September 12, 2011 at 4:16 am |
Happy 221st birthday, apparently!
September 12, 2011 at 4:20 am |
I wish this puzzle had some 4′s in it so I would have had a more valid reason to link to this: http://www.youtube.com/watch?v=JiZ3ll4giIQ
September 12, 2011 at 8:03 am
WTF?
September 12, 2011 at 4:16 am |
Easy? Really?
I’m not complaining about this puzzle (I like it, in fact), but I had to keep track of a lot of a lot more pairs of squares where only one can be black than I’d expect in an “easy” puzzle, and the endgame. . . it took me a while to see why the solution was unique, to be sure.
September 12, 2011 at 7:20 am |
To be flagrantly honest, I knowingly toyed with the difficulties for this week because none of the puzzles I’ve written recently could fit perfectly in the Monday slot. I basically ran out of time.
September 12, 2011 at 12:49 pm |
Very pretty
And I actually learned sth about 221. I think I knew this some time ago but managed to forget, that when you have a blank in 221 you also have a wall in the opposite spot. Not that it helped in this particular puzzle….
September 12, 2011 at 1:46 pm |
I had almost exactly the same experience (except I’m not sure I ever realised the opposite thing before). Very nice puzzle.
September 12, 2011 at 2:00 pm |
Nice Tapa. Not a fan of them but have to get better at them for sure.
The full lessons on 221s are that is there is a blank, the opposite is a filled in cell, AND so are the cells on each side of the blank. Certainly was at the heart of most of this one, … as well as the understanding that a path can’t be completed through closely neighboring 221s.
Thanks for the fun and the practice.
TheSubro