White to play and win (medium)
 ← 
 → 
18.d5! ( 18.Rd3? Qd5 19.Rh3 ( 19.Bf5 Qxf5 20.Rh3+ Qh7= ) 19...Qg5+ 20.Qxg5 fxg5 21.Be4+ Kg7 22.Bxb7± ) 18...Rfd8 ( 18...f5 19.Bxf5 exf5 20.Qh5+ Kg7 21.Qg5+ Kh7 22.Rd3 f4 23.Rg3‼ ; 18...Qa4 19.c3+− ) 19.Rd3 Bxd5 20.Bf5 Bxg2 21.Qxg2 1-0
[Event "Madonna di Campiglio"]
[Site "?"]
[Date "1974.??.??"]
[Round "?"]
[White "Jansa, V."]
[Black "Marovic, D."]
[Result "1-0"]
[FEN "r4r1k/pbpq1p1B/1p2pp2/8/1b1P2Q1/8/PPP2PPP/2KR3R w - - 0 18"]
[SetUp "1"]

18.d5 $1 ( 18.Rd3 $2 Qd5 19.Rh3 ( 19.Bf5 Qxf5 20.Rh3+ Qh7 $10 ) 19...Qg5+ 20.Qxg5 fxg5
21.Be4+ Kg7 22.Bxb7 $16 ) 18...Rfd8 ( 18...f5 19.Bxf5 exf5 20.Qh5+ Kg7 21.Qg5+ Kh7
22.Rd3 f4 23.Rg3 $3 ) ( 18...Qa4 19.c3 $18 ) 19.Rd3 Bxd5 20.Bf5 Bxg2 21.Qxg2
1-0