A lead in development tends to grow in value as the center is opened.
Nikola Karaklajic White
Stanmir Nikolic Black
Pristina 1973
Sicilian Defense, Rossolimo Variation B52
1 e4 c5 2 ♘f3 d6 3 ♗b5+ ♗d7 4 ♗xd7+ ♕xd7 5 c4 ♕g4?
Forking two pawns but losing time.
6 0-0 ♕xe4 7 d4!
On 7...♘d7 8 ♘c3 ♕c6 White could obtain good positional “comp” with 9 d5.
But he should be thinking of open lines, not a closed center, with 9 ♖e1.
Then 9...cxd4 10 ♘xd4 ♕xc4? permits a murderous attack with 11 ♘cb5! e6 12 ♗g5 and 13 ♖c1.
7...♘c6 8 ♘c3 ♕g4 9 ♘b5! ♕d7
Again, 10 d5 is positionally strong. But open lines make his pieces work better.
10 dxc5! dxc5 11 ♗f4
If 11...♕xd1? 12 ♖axd1, Black can’t stop 13 ♘c7+.
11...0-0-0 12 ♕a4! ♕f5
On 12...a6 White has 13 ♘e5! ♘xe5 14 ♗xe5 and a ♘a7 mate threat.
Question 69: Is 13 ♘e5 still good after 12...♕f5 ?
13 ♗g3 a6?
Better was 13...f6!, stopping ♘e5 and preparing ...e5!.
14 ♖ad1 ♖xd1 15 ♖xd1 ♘f6 16 ♕a5!
So that 16...♘xa5 17 ♘a7 mate.
16...♘e8 17 ♕d8+! ♘xd8 18 ♘a7 mate
Walter Browne White
Miguel Quinteros Black
Wijk aan Zee 1974
1 e4 c5 2 ♘f3 d6 3 ♗b5+ ♗d7 4 ♗xd7+ ♕xd7 5 c4 ♕g4 6 0-0 ♕xe4 7 d4 cxd4 8 ♖e1 ♕c6 9 ♘xd4 ♕xc4? 10 ♘a3 ♕c8 11 ♗f4 ♕d7 12 ♘ab5 e5 13 ♗xe5! dxe5 14 ♖xe5+ ♗e7 15 ♖d5! ♕c8 (15...♕xd5 16 ♘c7+) 16 ♘f5 ♔f8 17 ♘xe7 ♔xe7 18 ♖e5+ resigns.