perplexus.info :: Just Math : Sweet Sixteen

Sweet Sixteen (Posted on 2005-06-12)

16 checkers are placed on an 8 by 8 checkerboard, no two checkers on the same square. Show that some four of the 16 checkers are on the vertices of a parallelogram with positive area.

See The Solution Submitted by McWorter

Rating: 4.0000 (1 votes)

Comments: ( You must be logged in to post comments.)

Subject	Author	Date
re: oops	McWorter	2005-07-31 22:37:28
oops	Tan Kiat Chuan	2005-07-31 19:17:36
re: I think this is a solution...	McWorter	2005-07-31 18:15:11
I think this is a solution...	Tan Kiat Chuan	2005-07-31 16:28:40
re: How about this?	McWorter	2005-07-24 22:43:02
How about this?	Liz	2005-07-19 03:48:15
Solution idea, but not there yet.	Larry	2005-07-13 02:38:42
I'm not Jonathan Chang --- Really!	McWorter	2005-06-21 17:10:06
15-piece counter-example	Tristan	2005-06-12 19:36:20
re: Direct me to a Website	McWorter	2005-06-12 18:48:20
Direct me to a Website	Charley	2005-06-12 18:05:57

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