Distinct distances on a chessboard

From: "John Gabbriel" <johngabbriel@xxxxxxxxx>
Date: 30 Mar 2007 18:25:54 -0700

Consider the 8x8 integer lattice : {(x,y) | 0 <= x <= 7 and 0 <= y <=
7, x, y integers}

Can we select some 8 points from the lattice such that all the 28
pairwise distances of the 8 selected points are distinct?

.

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