Eight white chess knights are placed on a 3x4 chessboard, four along the top row and four along the bottom, which are labeled as P, Q, R, S, T, U, V and W, as shown in the figure.

Exchange the positions of P and T, Q and U, R and V, and S and W in minimum possible number of moves.

P	Q	R	S
T	U	V	W

Let the squares be identified from 1 through 12 being read from left to right down.

The Red Stack | Rating: 3.50
Posted on 2009-12-04 by Brian Smith (No Solution Yet, 2 Comments)

3x3 Nim | Rating: 4.00
Posted on 2009-06-25 by Jer (Solution Posted, 25 Comments)

Knights' Tours - Long & Short | Rating: 4.00
Posted on 2009-05-05 by brianjn (Solution Posted, 7 Comments)

Two players, two pots | Rating: 2.00
Posted on 2009-02-21 by pcbouhid (Solution Posted, 2 Comments)

Shuffle | Rating: 5.00
Posted on 2009-01-09 by brianjn (Solution Posted, 4 Comments)

The missing piece (chess) | Rating: 4.00
Posted on 2008-06-12 by pcbouhid (Solution Posted, 15 Comments)

Final Scores at the PrimeBowl |
Posted on 2007-11-28 by Dej Mar (Solution Posted, 10 Comments)