Spring Puzzle

Knight jumps to the square c3 and the black king is lying there - that ship has sailed? Nope, the square is covered by bishop g7. Good - what about b6? No, not a good idea either, the rook and bishop are still holding the position. Ok, spoiler alert for Spring Awakening - aren't the defenders somehow to be blocked in order to overthrow the Black Regent directly? Or is the attack this way doomed from the start and something else must be devised? Perhaps you simply need to take a different, new path for spring. For success, you only need three steps here.