Riddles, brain puzzles and mathematical problems

[Bridge]

1. Move the black knight on 1 to square 3.
2. Move the white knight on 7 to square 9.
3. Move the white knight on 5 to square 10.
4. Move the black knight on 6 to square 5.
5. Move the black and white knights on 3 and 9 to squares 2 and 8.

Can't get any farther at the moment. This is a really tough puzzle and I don't really want to waste my evening on it.

Wait Wait Wait. Very good try, but the horses on chess don't move like this.

It is a shape "Γ" (move 2 blocks at one direction and then turn left or right and move 1 block).

"The horse moves to the nearest square not on the same rank, file, or diagonal. In other words, the horse moves two squares horizontally then one square vertically, or one square horizontally then two squares vertically. Its move is not blocked by other pieces: it jumps to the new location."



A valid move is for example
1.)black 1-> 4
2.)white 7->1 etc.

You moved by 1 block in one direction and then 1 block left/right. This is wrong.

Actually to save myself a bunch of typing I simply designated the target square, because there is always only one way to get there.

So: Black knight on 1 to square 3 in reality means: Black knight to 4, 10, 2, 8, 9 and finally 3.

I play chess for hours every day so I have a pretty good idea of how knights move, but that post is excellent for the other people here who want a crack at the puzzle and don't understand your original instructions.