The following game shows the "1-0" arising from the threat to promote a passed pawn in a Rook and pawns endgame.
bgl001 - Kelv60.
5 0 blitz, lichess.org, 2020
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+
4...Kxf7 5.Nxe5+ Nxe5 6.Qh5+ Ng6 7.Qd5+ Ke8 8.Qxc5 d6
9.Qd4
The Queen often retreats to e3, in the process preventing 9...Qg5. Here, she eyes the dark squares.
9...Nf6
Recently played: 9...Qe7 10.Nc3 c6 11.d3 h6 12.O-O Nf6 13.Re1 Qe5 14.Qe3 Ng4 15.Qg3 Rf8 16.Qxe5+ N6xe5 17.f3 Nf6 18.Bf4 g5 19.Bg3 h5 20.d4 Ng6 21.Bxd6 Rf7 22.e5 Nd5 23.Nxd5 cxd5 24.e6 Rh7 25.Re2 Nf4 26.Bxf4 gxf4 27.Rae1 Ke7 28.Re5 b6 29.Rxd5 Bb7 30.Rd7+ Black resigned, DropBearMKJ-brianthehammer, Chess.com, 2020.
10.d3 Kf7 11.Bg5 Be6
Black is happy to further his development, but this Bishop placement, along with the Knight at g6, encourages White's next move.
12.f4 h6 13.Bxf6 Qxf6 14.Qxf6+ Kxf6
Black captures with his King to keep his Kingside pawns intact.
15.f5 Nf4 16.fxe6 Nxg2+ 17.Kf2 Nf4 18.Ke3 Nxe6
The game is balanced. White is going to have to out-play his opponent. This is a 5 minute game, and the surprise and strangeness of the Jerome Gambit may have given him a lead on the clock.
19.Rf1+ Ke7 20.Nc3 Raf8 21.Nd5+ Kd7 22.a4 c6 23.Nf4 Nxf4 24.Rxf4 Rxf4 25.Kxf4 Rf8+ 26.Ke3 Ke6 27.Rg1 g5 28.h4 gxh4 29.Rh1 Rh8 30.Rxh4 h5
Black's h-pawn has no future. The game is still even, and it is hard to know if White is disappointed because he doesn't have a checkmating attack, or relieved that he is no longer down two pieces. In any event, he presses on.
31.Kf4 Kf6 32.d4 a5 33.e5+ dxe5+ 34.dxe5+ Kg6
35.e6
Premature, but he gets away with it.
35...Rf8+
Forcing White's King to go where he wants to go. Black would have all the chances after 35...Kf6.
36.Ke5 Rf5+ 37.Kd6 Rf6 38.Kd7 c5 39.e7 Rf7 40.Kd8 Black resigned
