Archive for the ‘Yajilin’ Category

Puzzle 321 (Yajilin)

May 27, 2011

This is a Yajilin puzzle.

Puzzle 321

Puzzle 321


(Click for larger size)

I feel obliged to point out something I found in my referral list recently: http://pronter.tumblr.com/. It looks to be a digest of posts from several puzzle sites, a lot of which I (and probably many of you) already knew about. But new to me were some posts from Japanese puzzle blogs which seem to mostly post Heyawake puzzles, and they are both quite hard and extremely nice. Worth a look if that piques your interest.

Melon’s Puzzle Zoo has ended

February 28, 2011

Around the time of this posting, LMI is no longer accepting score submissions for the contest. Below is a link to the puzzle booklet, the same as the one on LMI without the password. There is also a PDF that has all of the puzzles on the test together with their solutions (don’t open if you don’t want to see them yet!), as well as some brief comments from myself about the puzzles. Mostly I pointed out the tricky innovative logic the puzzle had, if any — and for the adults there almost always was some.

Puzzle PDF
Solution PDF

(more…)

Puzzle 291 (Yajilin / Akari)

February 23, 2011

This is a Yajilin / Akari hybrid puzzle.

Puzzle 291

Puzzle 291


Part 10 of 12 in the Melon’s Puzzle Zoo preview series.

Answer Entry: Enter the digits corresponding to the total number of lightbulbs in each row from top to bottom.

Highlight to see answer: 1121221211

Puzzle 280 (Yajilin) [Squares]

February 2, 2011

This is a Yajilin puzzle, with a twist. Black squares are no longer confined to a single cell, but may span any square area of cells. There may be no black rectangles of different side lengths, and no two separate squares may be adjacent. The numbers indicate the total number of black spaces pointed to (not the total amount of distinct black squares). The closed loop behaves as it did in Yajilin.

Puzzle 280

Puzzle 280


(Click for larger size)

Puzzle 276 (Yajilin)

January 24, 2011

This is a Yajilin puzzle.

Puzzle 276

Puzzle 276


(Click for larger size)

I don’t think I’ve posted something genuinely easy on this blog for a long time…

(Also, I seem to have messed up the publishing date, so this post went up for a few seconds several hours too early. Sorry if that messed up any alerts/subscriptions.)

Puzzle 254 (Yajilin)

July 19, 2010

This is a Yajilin puzzle.

Puzzle 254

Puzzle 254

Puzzle 239 (Yajilin)

April 8, 2010

This is a Thursday Yajilin puzzle.

Puzzle 239

Puzzle 239

Puzzle 229 (Indirect Yajilin)

March 29, 2010

This is a Monday Indirect Yajilin puzzle.

Puzzle 229

Puzzle 229

Puzzle 193 (Yajilin)

February 15, 2010

This is a Monday Yajilin puzzle.

Puzzle 193

Puzzle 193

Puzzle 189 (Indirect Yajilin)

February 11, 2010

This is a Thursday Indirect Yajilin puzzle.

Puzzle 190

Puzzle 190


There is an important rule about 0s on the edge that I recently clarified on the description page. Basically, the “invisible arrow” on a vanilla clue (as all of the 0s here are) can’t point to an adjacent edge.