Visit all squares with the chameleon chess piece.

First you click the board anywhere to drop a chess piece, then you keep moving this piece.
The moving piece will leave a copy of itself on its from-position, and will turn into a different chess piece on its to-position. Each move (for Queen, Rook and Bishop) must be as far as possible, over empty positions and ending on an empty position.
King and Knight move only one step.

You lose if a piece is stalemated before you have visited all board positions.

In the default version you drop a Bishop, which then turns into a Rook, then a Knight, then a Queen, then a King and a Bishop again and so on. We call this piece a BRNQK-chameleon. Some variants use other sequences.

The variants use various board sizes.
All presented puzzles are solvable.
The hardest puzzle is the KN-chameleon on the 5x5 board.

Enjoy the puzzles!