I've done 39, I'm wondering if I should be trying to solve the final level or prove it insoluble, and I just got a subtle hint. Time to call it a night.
I can't see that anyone I know has definitely done #40. I'm not convinced it's impossible, but I think trying to prove it so might be the best line of attack on the solution.
I guess that's an implicit "level 40 is possible", although I still suspect trying to prove otherwise would be a viable line of attack. Beat me to it, you mathmo, you. :-)
Level 36 can be done without using the loose piece's looseness.
Yes, it is indeed possible, no I didn't do it at all methodically, so I haven't a clue how it was actually done, or indeed any idea how to prove it can't be. I hate trying to prove things I already know to be false anyway.
And you're right, 36 is do-able without cheating. Bit of a nuisance having to do 1-35 again to prove it to myself though :-)
I thought that only worked if you'd done the levels already? And how do I convince a completely different machine at home that I've done them already on the desktop at work?
Evil, evil, evil. There goes (or rather, went) a chunk of my time :) [and fwiw, I got to a point in 40 where reasoning didn't seem to be working, so I just started making random moves. 10 or so random moves later it was solved....]
It's definitely much easier coming back to it after having done it before. I've not been trying to do it in minimal moves, just to get it done, and it only took me an hour or so to whizz through the whole lot this afternoon.
I generally just move things around a bit, look at what's still in the way, think about what needs to move in order to move it, look at what gaps there are I can shove things in, then shuffle some more. And usually it all falls out pretty quickly.
Oh, this is the computer version of Rush Hour, isn't it? I've got the physical version and a couple of expansions. Original 40 were not too hard (don't remember finding no. 40 particularly difficult, but a couple of the others stumped me for a while). The expansion packs have some extra-hard levels though; haven't got round to doing them all yet.
Games and Puzzles have a number of (non-computerised) games of this type; they seem very popular.
I wonder if an extra-hard level really is; a useful angle of attack on some of the ones other people found hard - as with some "hard" Sokoban levels - is to notice that only one move does anything useful at all, rinse, and repeat.
I just beat level 40 (yeah I know, who the hell am I, but I found this link on google when seeing if level 40 was winnable) and wanted to show you all how to beat it... or at least what it should look like to beat it..
Oh, I'm sure it's possible; I was just considering the idea that a good way to find the solution would be to try to prove there wasn't one, which is often an effective technique.
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http://www.chiark.greenend.org.uk/~eleanorb/temp/Image1.png
Is level 36 *supposed* to have a cheating loose piece in though?
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Level 36 can be done without using the loose piece's looseness.
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And you're right, 36 is do-able without cheating. Bit of a nuisance having to do 1-35 again to prove it to myself though :-)
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[Doing 1-35 again - why not just use the "skip to level n" thing in the options?
]
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:)
[and fwiw, I got to a point in 40 where reasoning didn't seem to be working, so I just started making random moves. 10 or so random moves later it was solved....]
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I generally just move things around a bit, look at what's still in the way, think about what needs to move in order to move it, look at what gaps there are I can shove things in, then shuffle some more. And usually it all falls out pretty quickly.
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Games and Puzzles have a number of (non-computerised) games of this type; they seem very popular.
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Level 40 - can be beat.
http://www.avalon.net/~matrix/level40.jpg
Re: Level 40 - can be beat.