perplexus.info :: General : 9 balls, 10 straight lines

9 balls, 10 straight lines (Posted on 2008-10-12)

Place 9 balls ("o") in the intersections of the grid below to achieve 10 straight lines, each line containing 3 and exactly 3 balls. You may assume, if you need, that each cell is a perfect square.

           +---+---+---+---+---+---+---+---+
           |   |   |   |   |   |   |   |   |
           +---+---+---+---+---+---+---+---+
           |   |   |   |   |   |   |   |   |
           +---+---+---+---+---+---+---+---+
           |   |   |   |   |   |   |   |   |
           +---+---+---+---+---+---+---+---+
           |   |   |   |   |   |   |   |   |
           +---+---+---+---+---+---+---+---+
           |   |   |   |   |   |   |   |   |
           +---+---+---+---+---+---+---+---+
           |   |   |   |   |   |   |   |   |
           +---+---+---+---+---+---+---+---+

See The Solution Submitted by pcbouhid

Rating: 2.0000 (3 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)

Revise and extend my remarks...

| Comment 15 of 21 |

Comment # 3 was by Daniel (replying to Leming).

Also, a LEFT 45 º rotation is perhaps closer.

It would be nice if we could scroll through all the Comments on a given puzzle while we are replying, rather than having to exit and call them up one at a time. Has that been considered?

Posted by ed bottemiller on 2008-10-15 11:02:36

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