The position must be played positionally. If White conquers e4 without a fight, the g5–pawn will decide the show.
1.Qb1+ Kc5 [Staying close to pawn-g5.] [1...Ka5 2.Be4 Bxe4 3.Qxe4+– eg 3...Bd8 4.Qf5 Kb6 5.g6 e4 6.Bf2 Bc7+ 7.Kg4 Qb2 8.Kh5 Qh8+ 9.Kg5 Be5 10.Kg4 Qh2 11.Qxe4]
2.Be4 [2.Kh2 Bf3]
2...Bxe4 3.Qxe4 [Dominance?]
3...Qd3! [Not yet!] [3...Bd8 eg 4.Kg4
(4.Qf5) ]
4.Qf5!! [4.Qxd3? e4+ 5.Qd6+ (this play is known from HHDBVI #14803 by Afek, Van Essen, Wohl and a subsequent study by Afek & Minski #12544) 5...Bxd6+=
(5...Kxd6=) ]
4...Kb4!? [Keeping cool, but now the king is too far from the action.] [4...Qxf5 5.e4+ Qf2+! (doubling of this theme)
(5...Kd6 6.exf5+–) 6.Bxf2+ Kd6 eg 7.Kg4; 4...Kb6 eg 5.Qxd3
(5.g6) ; 4...Qd8 eg 5.g6]
5.Qxd3 [Now it works.] [5.Qf7 eg 5...Qd1=]
5...e4+ 6.Qd6+ [6.Kg4?? exd3–+]
6...Bxd6+ 7.Kg4 [7.Kh4? c5=]
7...c5 [7...Kc4 8.g6 Bf8 9.Bh2 Kd5 (9...Kd3 10.Bd6 Bg7 11.Bc5+–
(11.Kf4+–) ) 10.Kf5 Bg7 eg
(10...c5 11.Be5) 11.Bc7 c5 12.Bd8]
8.g6 [White needs to finish with precision.] [8.Kf5 c4 9.g6 c3=]
8...Bf8 [8...Be5 9.Kf5
(9.Bh2) ]
9.Bh2 [9.Kf5 c4 10.Kxe4 c3=]
9...c4 [9...Bg7 10.Bd6+–
(10.Kf5) ]
10.Be5! [10.Bd6+? Bxd6 11.g7 c3 12.g8Q c2 13.Qc8 Bc5=
(13...Kb3 14.Qe6+ Kb2 15.Qxd6 c1Q 16.Qb4+ Ka2 17.Qxe4+–) ]
10...c3 11.g7 Bxg7 12.Bxg7 c2 13.Bb2 Kb3 14.Bc1+– 1–0