Progressive Writing Chess

Rules

On the first turn, each player writes 1 move, second turn 2 move each, and so on. The moves must be valid from the current position, asuming opponent isn't moving at all. You win when opponent's king is captured. The first player to move during a turn is White if num.moves is odd, Black if even. Any invalid moves are skipped. For writing your moves, you have 3 choices what to write for each move:

1. The piece number (each unit is assigned a different piece number) and destination square.
2. The piece number and the relative position of destination square.
3. The starting square and ending square.