hacker.org Forum Index
RegisterSearchFAQMemberlistUsergroupsLog in
Still works in 2020 :-)

 
Reply to topic    hacker.org Forum Index » Crossflip View previous topic
View next topic
Still works in 2020 :-)
Author Message
wischi



Joined: 08 Apr 2012
Posts: 9

Post Still works in 2020 :-) Reply with quote
A few years ago I gave a shot and tried a few levels by hand and thought about how to solve it programatically, but quickly lost interesst. Last weekend I gave it another shot and a few moments ago just reached 643.

I solved it with a very straight forward gauss elimination and didn't optimize it very well ^^ At about level 300 I rewrote small parts of the program (transitioned from bool[] to BitArray). After that my estimates showed that solving all 643 would only take about a day on my machine so I didn't bother optimizing it any further.

Solving the last puzzle took my machine/algorithm about 12 min and reading through the comments for this puzzle I'm very impressed that some people (I'm looking at you @tails ^^) managed to solve the last one in about 20 seconds on a celeron CPU years ago.
Mon Jun 08, 2020 7:23 pm View user's profile Send private message
Display posts from previous:    
Reply to topic    hacker.org Forum Index » Crossflip All times are GMT
Page 1 of 1

 
Jump to: 
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group
Design by Freestyle XL / Flowers Online.