Wow!

I got my regular dose of Nikoli Puzzle Communication books last night. Last year I complained to myself about the repetitive nature of their puzzles that slowly bored me overtime, I stopped my subscription to their online puzzles and stuck to their magazines instead.

What I look forward to in each Nikoli Puzzle Communication is everything but the pages stuffed to the gills with your usual Masyu, Slitherlink, Fillomino and what not. I only solve them on auto-pilot cause most of the time, those puzzles aren’t memorable. They had to be darn impressive to even warrant a grin.

Sometimes I raise a few eyebrows at how constructors manage to pull off beautiful givens in their puzzles. And that’s it. But the latest issue, No.147, had one page that made my eyes pop out.

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Shimacharo managed to shove an entire Sudoku into this beast of a Ripple Effect puzzle!! Imagine how long that took!
I eagerly wait for the day when our puzzle community is large enough to have more magazines like Nikoli’s.

If you want your share of Nikoli’s goodies, hover all the way down to the links below where I’ve linked Nikoli’s website since the beginning of this blog. Another hard way to get Nikoli magazines is to win my next event which will start next month. More about that soon.

Long live Nikoli!

Solutions to Anchors Aweigh – 3/4

 Puzzle 4 – Battleship Sudoku

puz5dokuInvented by Thomas Snyder, Battleship Sudoku was one of the early puzzle types I discovered a few years back. The givens in this puzzle form an anchor which was later asked as the final question at Yubotu Island.

As with most Battleships, you start by locating the longest ship, here it is the 6587-battleship. Scanning column to column, row to row, you can see that there is only one available row for the Battleship. Conveniently, only one exact location.

aapuz5ansaThe next step is to look at the 8th column. There are 4 vacant squares for three ships. If the lone cell (R7C8, shaded red in the diagram below) is occupied, it will eliminate 2 cells in the 6th row which will force all 4 remaining cells to be occupied.Should this happen, the 4th column cannot take 3 ship parts (it can only take 2), so we can deduce that R7C8 will be empty, and that the 3 remaining cells of the 8th column will be occupied by a 3-cell long destroyer.

aapuz5ansbFrom here several ships force itself into the grid.

aapuz5anscThe last part of the puzzle is fitting the three submarines into the upper-left portion of the puzzle and all is done!

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