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Bored at School? Try This Logic Puzzle!

BitoBain

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You're in your history class, and the teacher is grumbling about some battle that happened in ancient Mesopotamia... :sleep: :zzz: But you can't fall asleep because the teacher is watching you. You need a logic puzzle! :thumbsup: (y)

Your problem is simple. Given an 8x8 chess board, place eight queens on it so that none of them can attack another. In other words, two queens cannot exist in the same rank, file, or diagonal. Remember, a queen can move any number of squares in any of the eight directions.

...

You have until the end of the class period to figure it out. I was able to figure it out myself without help. Those who cheat by looking it up will be sentenced to an extra history assignment. Good luck, and only use my hint if you are stumped!

Feel free to discuss below

Try this puzzle first with a 4x4 board with four queens, then continue onto five, etc... You might also try placing two or three queens down, then marking which squares they cover.
 

Miner9823

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Oh my gosh! This puzzle is something I familiarize with, because I recently played a video game on my PSVita (Uncharted, Golden Abyss), in which consisted of a puzzle relatively similar to it. I think I get the gist of it, time to get on to the challenge. Boooy it'll be fun. ;D

I'll edit this post here when I'm done. Oh, and when I finish, I'd love that History assignment! c:
'
EDIT:

After an excruciating amount of time being spent on this puzzle, I have finally made it!

Keep in mind, guys, that this is only one of many other different solutions. Can you find them all without cheating? ;D
 
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R4INB0W

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I ain't gonna do it nomore-,- Its damn hard..
 

Ceroria

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Well, lucky for me I have history next period!

Unluckily... I'm taking a test... ;-;

I'll still be thinking about this today, thanks for the brain food!
 

BitoBain

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Glad to see some of you have taken up the challenge! It got me through some boring times in class at one point. And yes, Miner and Mango, those solves look perfect!

I love the beauty and simplicity of the problem. Yet it is still fairly challenging. I solved it when I sat down and started to keep close track of which squares were being covered, and got a warm, fuzzy feeling when I got it. :p

Out of curiosity, I tried doing it with all sizes of boards, starting with 4x4 and going up. I found that there is a window between 7x7-11x11 in which it's quite tricky, but after that there are so many solutions and the queens are so spread out that it starts to become easier again. I think I went up 16x16 or so... then they started to not fit on my paper haha. Gotta love this stuff.
 

BaccaBoy1999

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For someone who knows how chess works, this took me a minute, I knew there would be one in each row and each column, I knew to stack most of them like knights, then just fill in the remainder.


Step up these challenges.
 

BitoBain

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For someone who knows how chess works, this took me a minute, I knew there would be one in each row and each column, I knew to stack most of them like knights, then just fill in the remainder.


Step up these challenges.
This one isn't as easy to draw out on paper, but if you want something harder, try this. Take a knight and start at any square on the chess board. Then, moving as a knight does, go to every square on the chess board exactly once. You may not miss a square or go over a square twice. I haven't tried this one myself, but I've heard it's pretty tricky.
 

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