/prog/ Challenge Number 6

Hey guys and .. well, guys.

This time, the /prog/ Challenge is to design an algorithm that solves minesweeper fields.

Best algorithm wins. All algorithms have to execute in O(n) or O(n^2).

Good luck.

Funny fact: If you were able to solve the fucking queens, this is a joke; just change the check method from linear to areal and from simple binary (safe/unsafe) to analogue (number of fields, etc.).

Don`t bother, it is NP-complete, baby.

http://for.mat.bham.ac.uk/R.W.Kaye/minesw/ordmsw.htm

I had this guy as a lecturer for several maths topics, he's brilliant.

Is it touring compete though?

I'M >>3
SON OF A BITCH >>4
>>4 IS PIG
DO YOU WANT RELEVANT POSTS?
DO YOU WANT SERIOUS?
>>4 IS PIG DISGUSTING
MATH IS A MURDERER
FUCKING >>4

In response to post no.2:

HURRRRRRRRR

this code runs on my quantum computer:

Universe universe = new Universe();

while not minesweeper_solved(universe)
     universe = new Universe();

print_minesweeper(universe.getInstanceByPattern(Pattern.MINESWEEPER_SOLVED)))
}

run time is O(sqrt(n))

>>8
We dont run Java on quantum computers.

>>9
you obviously don't write enterprise quantum scalable software solutions

(set!               

>>10
You're right, however we do have a Universal Turing Machine here that emulates the Java VM.

definitely np complete, as the problem can be coded as a series of logical constraints, we can reduce to n-sat. 

Here's my solution:
Reduce minesweeper to n-sat
Reduce n-sat to 3-sat

use the best polynomial time approximation algorithm out there for 3-sat....I declare my answer is good enuf.

>>2
I solved the queens problem by simple recursive search (eliminating possibilities in a subboard before recursing) in the forced indentation of code. Found 92 solutions, though there's actually 23 which are rotated to get 92. Draws them. It's not OMG OPTIMIZED. Takes 54 ms to run from the shell with >/dev/null, including the forced loading of Python (16 ms for an empty program). Under 50 lines of code.

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