05 Apr '06 04:35

(this puzzle was taken from an old adventure game)

Prenises:

You are playing on a 4x4 chessboard.

So, columns are a, b, c, d.

Ranks are 1, 2 , 3, 4.

There are in the initial position 2 white Knights on b1, c1, and

2 black knights on b4, c4.

You must interchange the Knights positions (that is, the final position should be

2 white Knights at b4, c4, and 2 black Knights at b1. c1).

Condition:

During the moves, no piece can be subject to being captured.

White to move.

And a honest advice: This can't be solved in less than 64 moves!

But don't be afraid! Try to solve it!

Prenises:

You are playing on a 4x4 chessboard.

So, columns are a, b, c, d.

Ranks are 1, 2 , 3, 4.

There are in the initial position 2 white Knights on b1, c1, and

2 black knights on b4, c4.

You must interchange the Knights positions (that is, the final position should be

2 white Knights at b4, c4, and 2 black Knights at b1. c1).

Condition:

During the moves, no piece can be subject to being captured.

White to move.

And a honest advice: This can't be solved in less than 64 moves!

But don't be afraid! Try to solve it!