talking to sabir4795
King and Pawn Endgame Puzzles

You mention Reti's 1921 study. His related 1928 study appears less well known.
Kg6 go for the g7 pawn, and the king can consecutively chase the f pawn and try to protect the c pawn at the same time. The most stubborn line is:
1.Kg6 Kb6
2.Kxg7 h5 (2. ...f5 3. Kf6 f4 4. Ke5 f3 5. Kd6 f2 6. c7 f1=Q 7. c8=Q and queen vs. queen and pawn is a theoretical draw)
3. Kf6 h4 4. Ke5 h3 5. Kd6 same draw

You mention Reti's 1921 study. His related 1928 study appears less well known.
Kg6 go for the g7 pawn, and the king can consecutively chase the f pawn and try to protect the c pawn at the same time. The most stubborn line is:
1.Kg6 Kb6
2.Kxg7 h5 (2. ...f5 3. Kf6 f4 4. Ke5 f3 5. Kd6 f2 6. c7 f1=Q 7. c8=Q and queen vs. queen and pawn is a theoretical draw)
3. Kf6 h4 4. Ke5 h3 5. Kd6 same draw
Excuse me 5. Kd7 is a BIG blunder. Push c7
Somebody already pointed out mate in 7 after move 5. After 6...Kh8 what are you going to do next? Take your move back? After 6...Kf8 it's even quicker:
By the way mate with two queens should never take more than 4 moves - 2 after your move 12.
on move six in that game you should've promoted your rook pawn to a queen and then played Kh6 for the win