peek at solution solve puzzle
quality: difficulty:
solvability: moderate lookahead
Puzzle Description Suppressed:Click below to view spoilers
#1: emily theriault (emilyt) on May 21, 2004
great job#2: Mark Conger (aruba) on Jul 2, 2004
This one is still very hard, even though I've done it many times.#3: Mark Conger (aruba) on Dec 23, 2004
I must have done this puzzle 10 times by now, and it's still hard. One of the all-time classics.#4: Mark Conger (aruba) on Mar 10, 2005
Still a classic! Might be m favorite black and white puzzle on the site.#5: Mark Conger (aruba) on Jan 27, 2006
Even tough I've done many puzzles since first doing this one, it's still hard!#6: Mark Conger (aruba) on Aug 2, 2006
I've done done this puzzle maybe 10 times now, and it's still hard each time! Even though I remember some tings about the puzzle, I still get stuck.#7: Jan Wolter (jan) on Aug 2, 2006
I'm glad you like the puzzle, but having reread comments 2 through 6, I'm beginning to wonder if you're stuck in a slow infinite loop here. I think it might be because your loop counter is failing to increment - it seems to be stuck at ten.#8: Zapman (Zapman) on Nov 4, 2007
I get to the last 10 or so blocks in the top left corner and have to guess where the first two on the third row must go. Am i missing something?#9: Mark Conger (aruba) on Sep 6, 2006 [HINT]
Comment Suppressed:Click below to view hints#10: Mark Conger (aruba) on Sep 6, 2006
Re #8: Yes, it's true that you can't get the UL corner using row-by-row logic. But you can prove that there is only one solution.#11: Mark Conger (aruba) on Sep 6, 2006
Well, I must have done this at least 11 times now, and it's still one of my favorite black and white puzzles on the site.#12: Gitte Olesen (granny40) on Dec 1, 2006
Wowser.. Yes... tricky.. good. Thank`s.#13: michael31415 (ml.qwerty) on Jun 20, 2007
Nice!#14: Kevin Sobiski (biskit) on Jul 3, 2007
That was surprisingly difficult. It took me three tries to finally get it.#15: ikke (ikke) on Jul 17, 2007
Nice but not that hard.#16: Gypso (Gypso) on Jul 21, 2007 [SPOILER]
Comment Suppressed:Click below to view spoilers#17: Arduinna (arduinna) on Sep 29, 2007
Nice! And it's the classic design.#18: Tim McCormack (phyzome) on Nov 14, 2007
I've gone at this one three times so far, and each time I've hit a "contradiction". Dagnabbit!#19: Adam Nielson (monkeyboy) on Sep 11, 2008 [HINT]
Comment Suppressed:Click below to view hints#20: Adam Nielson (monkeyboy) on May 9, 2009 [HINT]
Comment Suppressed:Click below to view hints#21: Byrdie (byrdie) on Jun 14, 2009
Ditto Adam's comments about the upper left corner. That's exactly how I solved it.#22: Cro-Magnon (Hermit) on Nov 29, 2009 [HINT]
I jumped ahead to try a slightly larger puzzle than the ones I've been solving. This was my first in that class of sizes and it was a toughy but I got on the first (rather long!) try.
Very nice puzzle.
Comment Suppressed:Click below to view hints#23: Adam Nielson (monkeyboy) on Nov 29, 2009
When I first got to this site, I started doing all the new puzzles as well as starting from the beginning and going through chronologically. Back then, I didn't have a clue about edge logic, smile logic, or anything but simple line solving. So I often wrote things like "had to guess," and similar thoughts. Then, as I got more advanced, I went back and solved many of them again (and I am still in the process) and amended or added new comments, hoping they may help future solvers.#24: Teresa K (fasstar) on Dec 8, 2009
This is one of my favorites. I know I solved and saved it before, about a year ago, but it showed up on my unsolved list.#25: Deana L (FFsWife) on Dec 8, 2009
lucky you teresa!#26: Ray Star (RazorStar) on Jan 23, 2010
Really tough puzzle, but I did finally come back to it. Good job with this, took some other puzzles to give me "hints" for this one.#27: Alisha Showen (angelalisha) on Aug 26, 2010 [HINT]
Comment Suppressed:Click below to view hints#28: Joe (infrapinklizzard) on Aug 27, 2010 [SPOILER]
Comment Suppressed:Click below to view spoilers#29: Avgvstvs (Avgvstvs) on Oct 26, 2010 [HINT]
Comment Suppressed:Click below to view hints#30: Diana W (aeris) on Feb 2, 2011 [SPOILER]
Comment Suppressed:Click below to view spoilers#31: Maor R. (mr713) on Apr 11, 2011
very hard one. took me some time to solve it.#32: Lilly Johns (LJohns315) on Jun 16, 2011
Difficult puzzle. It's so satisfactory to solve a hard one though.#33: Brian Bellis (mootpoint) on Jan 11, 2014
Wow! Puzzle #8. Fun puzzle but not as hard as the early solvers made it out to be.#34: Norma Dee (norm0908) on Jan 11, 2014
I should really go back and solve all of the "historic" puzzles.
I've noticed how the definition of hard has changed over time. This was not that bad. A little tricky at the end, but got it to solve.#35: Jan Wolter (jan) on Feb 17, 2014
At the time when this was posted, I don't think we had any users (including me) who had ever solved more than a couple dozen puzzles. Now I see 71 users who have solved more than 10,000 puzzles on this site alone. Standards of difficulty have change a lot.#36: Norma Dee (norm0908) on Feb 17, 2014
I thought I might be the only one to do repeat solvings. When I was buying every pbn book that came out, as soon as I finished a puzzle I would erase it so it would be ready to solve again. :)#37: Rai Dawg (randiculous) on Sep 17, 2017
Quite difficult puzzle. I definitely guessed a few times, but was able to finish it.#38: Julio Parra (Julio Parra) on Jul 29, 2018
Puede resolverse con lógica.#39: Velma Warren (Shiro) on Nov 6, 2018
I did have to guess once. Other than that is was an interesting puzzle. Tough subject for such a small space.#40: Luis Cavazos (luishifto) on Mar 11, 2019
It is solvable by line logic. Great puzzle.#41: Joe (infrapinklizzard) on Mar 11, 2019 [HINT]
Comment Suppressed:Click below to view hints
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