Search found 19 matches

by lordofthesnails
Fri Jul 28, 2017 3:16 pm UTC
Forum: Computer Science
Topic: chess under duress
Replies: 27
Views: 4857

Re: chess under duress

I would suggest the card game bridge has some answers. There is much accepted theory about how to bid optimally, while also sending as much information as possible to your partner. In the case of chess, sending a lot of information as early as possibly is foolish, as you'll very quickly lose. As the...
by lordofthesnails
Wed Jul 26, 2017 3:20 pm UTC
Forum: Logic Puzzles
Topic: Jenga
Replies: 13
Views: 3966

Re: Jenga

Thanks Derek, indeed it's just 1 less row from my first example, so going second wins So here's the situation, can anyone see what's going on? I've taken out a lot of the duplicates, "pairs mod 3" was nice to take out a lot of lines. I've sort of grouped "takeable threes"...
by lordofthesnails
Tue Jul 25, 2017 4:32 pm UTC
Forum: Logic Puzzles
Topic: Jenga
Replies: 13
Views: 3966

Re: Jenga

This version 2 puzzle is wonderful. I've always been curious about this and I've never been able to get my head round it, so I stuck it into Excel. I can now see who wins for each state of the Jenga tower and the correct move in each case, but I can't see the pattern :oops: Certainly something maths...
by lordofthesnails
Tue Jun 20, 2017 2:45 pm UTC
Forum: Logic Puzzles
Topic: Pirate Game with New Priorities
Replies: 6
Views: 1610

Re: Pirate Game with New Priorities

oh SNAP
by lordofthesnails
Tue Jun 20, 2017 2:12 pm UTC
Forum: Logic Puzzles
Topic: Pirate Game with New Priorities
Replies: 6
Views: 1610

Re: Pirate Game with New Priorities

I had somewhat intended K to be killing other pirates , but you did cover that. I agree with all the above, with the exception of: For LKC: Now the pirates still care about killing other pirates more than about getting coins, but not at the cost of their own lives. When it gets down to D and E, D wi...
by lordofthesnails
Tue Jun 20, 2017 12:38 pm UTC
Forum: Logic Puzzles
Topic: Pirate Game with New Priorities
Replies: 6
Views: 1610

Pirate Game with New Priorities

Right, sorry if this has been posted but I couldn't find it. We all know the standard pirate game, but the rules have always taken for granted that the pirates prioritise in order: 1. (L)ife 2. (C)oins 3. (K)illing other pirates (LCK for short) The pirates I've read about don't necessarily value the...
by lordofthesnails
Thu Feb 16, 2017 5:09 pm UTC
Forum: Logic Puzzles
Topic: Escape the Frictionless Circle
Replies: 146
Views: 28802

Re: Escape the Frictionless Circle

So here's a physics solution: Gold, like every other element, has a rate of radioactive decay. And the rope does not connect you to the radioactively expelled protons, neutrons and electrons that aren't gold any more. The only thing that doesn't have a rate of radioactive decay is you. Beca...
by lordofthesnails
Fri Aug 26, 2016 3:29 pm UTC
Forum: Logic Puzzles
Topic: Escape the Frictionless Circle
Replies: 146
Views: 28802

Re: Escape the Frictionless Circle

Sorry for the bump but I wouldn't mind someone telling me what's wrong with this: Push the cube on the edge away from your own centre of mass, so that you move away from it, it moves away from you a little, but it's also spinning. Using the rope you can now zero out your speed relative to the cu...
by lordofthesnails
Mon Jan 02, 2012 9:36 pm UTC
Forum: Logic Puzzles
Topic: How many prisoners?
Replies: 112
Views: 41663

Re: How many prisoners?

Impressively complicated solution, but in practice: If we have 16 prisoners (not unreasonable), the warden is strong enough that we can spend a lifetime playing this game, and have narrowed it down to somewhere in the 15 - 32768 range. I suppose it's progress. If we have 4 prisoners, and...
by lordofthesnails
Fri Nov 25, 2011 6:28 pm UTC
Forum: Logic Puzzles
Topic: Prisoners, hats, twists, etc.
Replies: 21
Views: 3915

Re: Prisoners, hats, twists, etc.

Give every prisoner a time slot of 1 minute, beginning with the last one in the row. They follow the usual strategy (call KARBUKI if zou don't see another hat in front of you and it is your time slot), but the second in which they do it depends on the hat color of the blind prisoner: De...
by lordofthesnails
Wed Nov 23, 2011 8:36 pm UTC
Forum: Logic Puzzles
Topic: Prisoners, hats, twists, etc.
Replies: 21
Views: 3915

Re: Prisoners, hats, twists, etc.

Is the blind person aware of the time? Darn! So many things I didn't think of. I intended that he could tell the time, he has his own braille watch or something. Each minute is a person's turn to either guess or stay quiet. We start at the back; if the current person cannot see the partner for ...
by lordofthesnails
Wed Nov 23, 2011 7:20 pm UTC
Forum: Logic Puzzles
Topic: Prisoners, hats, twists, etc.
Replies: 21
Views: 3915

Re: Prisoners, hats, twists, etc.

Calling KARBUKI is allowed, all other talking is not. I will edit.

You cannot see the colour of the hat you're wearing, so it's unfortunately not that simple.

Also I will edit: for clarification, you cannot call KARBUKI if you are at the front, the aim is to find your pair.
by lordofthesnails
Wed Nov 23, 2011 5:06 pm UTC
Forum: Logic Puzzles
Topic: Prisoners, hats, twists, etc.
Replies: 21
Views: 3915

Prisoners, hats, twists, etc.

No one has posted in a while, how hard can it be to write a logic puzzle? I'm gonna start typing and see what happens... 50 prisoners standing in a line are wearing 25 different coloured hats, 2 of each type total, so that each prisoner is paired with someone else. Prisoners face forward and can see...
by lordofthesnails
Tue Aug 23, 2011 3:19 am UTC
Forum: Logic Puzzles
Topic: Do I have the best solution?
Replies: 6
Views: 1992

Re: Do I have the best solution?

I imagine the way this is written is not the way the question is intended, or else the answer is indeed trivially x*y
by lordofthesnails
Sun Nov 14, 2010 11:03 pm UTC
Forum: Logic Puzzles
Topic: Shifting numbers
Replies: 7
Views: 1633

Re: Shifting numbers

Spoiler:
move these numbers into the empty space:

5,3,1,2,4,6,5,3,1,2,4,6,5,3,1,2,4,6,5,3,1

(iterate 531246 - no jokes)
by lordofthesnails
Sat Jun 14, 2008 8:42 pm UTC
Forum: Logic Puzzles
Topic: Paul and Sam
Replies: 15
Views: 5497

Re: Paul and Sam

Oh of course! thanks - my bad
by lordofthesnails
Sat Jun 14, 2008 8:05 pm UTC
Forum: Logic Puzzles
Topic: Paul and Sam
Replies: 15
Views: 5497

Re: Paul and Sam

Right, I retract my earlier comment that 2 solutions makes the problem flawed, as both Paul and Sam can differentiate between the 2 with the number they're given to start with, just we can't. I've done some checking, but observe P(I've made a mistake)>>0 I reckon the solution is NOT unique: 4,13 and...
by lordofthesnails
Sat Jun 14, 2008 7:42 pm UTC
Forum: Logic Puzzles
Topic: Paul and Sam
Replies: 15
Views: 5497

Re: Paul and Sam

Oh yes so they do. Still, neither seem to have a conclusive answer.
by lordofthesnails
Sat Jun 14, 2008 12:40 am UTC
Forum: Logic Puzzles
Topic: Paul and Sam
Replies: 15
Views: 5497

Re: Paul and Sam

Sorry to bump this, apologies if there is a rule against it, I'm new, but I have my doubts about the "solutions" and I just couldn't leave this where it was. Firstly claiming b<=53 is a little suspicious, since the product ab doesn't necessarily have to be less than 100 unless I misunderst...

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