Lost Puzzles

1. This first puzzle was a mate in 1,228 (approximately) moves after compelling Black to take three consecutive Knight tours. All of White's material is still on the board.
2. The second puzzle was a mate using seven or eight Bishops of the same color. Black had some pawns.
3. The third was a mate in four(?) where the solution was the Ruy Lopez opening move order: 1. e4 e5  2. Nf3 Nc6  3. Bb5 Bc5  ... maybe it was mate in three. The pieces moved from other squares, not original squares.

I forgot where (or why) I found these puzzles. Would love to see them again. Can anyone post the FEN?

good question

also what exactly is the 50 move rule