Underpromotion puzzle

Karthus
Karthus
Dec 25, 2010, 3:08 AM |
0

White's got a huge advantage with 3 pawns on the 7th rank, but black can still easily draw the match. Notice where the king can move in his current position (he can only capture the g5 pawn).

If the second pawn turns into a queen.
If the third pawn turns into a queen.