Ugly Duck

Ugly Duck is played on a 5x5 square board.Each player starts with 5 stones(ducks)on the first row.
A duck moves one cell orthogonal or diagonal forward.
Ducks capture diagonal forward.Captures are not mandatory.
A duck reaching last row is promoted to a swan.
A swan moves one cell orthogonal or diagonal backward (toward start row).
Swans capture diagonal backward.Captures are not mandatory.
Wins the player who first moves a swan into his first row.