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Mate in 7, are you sure you can find it?
Easy mate in 3. You'll have to waste some moves if you want to mate in 7.
Black to move and draw the game

Black to move and draw the game
After 1...Kf2 2.a4, White can promote but Black will also promote and still have a draw in spite of White's extra pawns. Probably White's best chance for a mistake by Black.