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04 March 2011 @ 12:01 am
Friday Puzzle #91 - Make Room for More Tapa  
Two weeks ago I created a new Tapa variation, "Make Room for Tapa", in advance of that weekend's Tapa Variations Contest. Well, the variation was a popular idea and will now be appearing in this weekend's TVC VII, the 3rd of 4 this year. I greatly look forward to seeing what Serkan has in store for us.

I've written two more "Make Room for Tapa" puzzles to serve as a warm-up for the challenging test ahead. Enjoy, and good luck to those who will be competing!

Shade some cells black to form a continuous wall. There cannot be a 2x2 square of cells that are all shaded. Numbers in cells indicate the length of connected black cell groups in the neighboring cells; if there is more than one number in a cell, then there must be at least one white cell between each of the indicated black cell groups. Cells with numbers cannot be a part of the wall. The grid is also divided into regions by bold lines; exactly five cells must be shaded black in each region.

motrismotris on March 8th, 2011 04:09 am (UTC)
I can certainly point (vaguely) to particular regions to look at; I'm not sure that will address your problems but you can bring them in your stack 'o puzzles to the next event we are both at and talk through them.

On the top puzzle here, you want to observe a LITS-like rule. A 5 cell P pentomino shape cannot all be shaded (2x2 rule). This puzzle has several regions that consist of a region touching a Tapa clue plus a 5 cell pentomino P (most actually break down this way twice).

On the bottom puzzle - the 221 clues that touch the outer-left region are the most important to consider. How many cells must be shaded in the outermost region due to them? If you can find any way to spend just 5 cells in that region which satisfies the 2/2/1's, you have found THE way.

Edited at 2011-03-08 04:11 am (UTC)
MellowMelonMellowMelon [wordpress.com] on March 8th, 2011 05:50 am (UTC)
2/2/1 in general is prime break-in territory.
TH: pencilrpipuzzleguy on March 10th, 2011 01:41 am (UTC)
Got through them both with these pointers. Thanks!