Online since 2002. Over 3300 puzzles, 2600 worldwide members, and 270,000 messages.

TwistyPuzzles.com Forum

It is currently Thu Apr 17, 2014 8:17 am

All times are UTC - 5 hours



Post new topic Reply to topic  [ 1 post ] 
Author Message
 Post subject: English 16 Puzzle
PostPosted: Mon Jan 23, 2012 9:36 pm 
Offline
User avatar

Joined: Tue Mar 10, 2009 7:06 pm
Location: Nowhere in particular.
Has anyone else seen this puzzle? Or any of the other puzzles on this site? http://www.mazeworks.com/english16/index.html

It's a pretty fun peg puzzle. The challenge isn't really in solving the puzzle, as much as it is finding the shortest possible solution. The shortest known solution is 46 moves long, and the shortest I've gotten is 70 using a 3-phase method. It's a fun little puzzle, and it would be interesting to see how other puzzlers approach it.

Here's what I did: I found a 20 move sequence which swaps four pieces from one square with four pieces in the other, along the "X" shape. All that remains after that are the 2x2 squares. I used a 13 move sequence to swap the solved "X" pieces with the unsolved "square" pieces on each side, for a total of 26 moves. Then, I just repeated the 20 move sequence on the "X" and it was solved in 66 moves. Inefficient? Probably, but I'm still playing around with it. I might be able to shave moves off of the 13 move sequence, but I'm probably going to have to find a completely different approach if I want to make a significant change.

EDIT: Found a 16 move alternative for the 20 move sequence, bringing my solution down to 58 moves.

_________________
~Kapusta

PB: At home (In Competition)
2x2 1.xx (2.88)
3x3 11.xx (15.81)
4x4 1:18.26 (1:24.63)
5x5 (3:00.02)
6x6 4:26.05 (6:34.68)
7x7 6:38.74 (9:48.81)
OH (35.63)

Current Goals:
7x7 sub 6:30
4x4 sub 1:10


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 1 post ] 

All times are UTC - 5 hours


Who is online

Users browsing this forum: No registered users and 9 guests


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 post attachments in this forum

Search for:
Jump to:  

Forum powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group