Korchnoi - Kasparov, Olympiad, Lucerne 1982

After 22.Nb5-a3

After 22.Nb5-a3

22...Rbe8. Kasparov: 'The third critical moment. The heated battle is approaching its White's difficulty lies in the abundance of choices.' 23.Bd2?. White overlooks a tactical blow. Several alternatives are:-

• 23.fxe5 Bxe5 24.Bf4 (24.Nc4 Bxg3+ 25.Kg1 Qd8) 24...Nxf4 25.gxf4 Bxf4+ 26.Kg2 Qd8.
• 23.Be3 Nf7 24.Nc4 Qd8.
• 23.Qc2 followed by 24.Bd2 and 25.Be1.
• Kasparov thought the best move was 23.Qg2, e.g. 23...Qb4 (23...Nf7 24.Nc4 Qb8 25.g4 Nf6 26.Bd3; 23...Qd8 24.Bd2) 24.Nc2 Qb8 25.Ne3 Nf7.

Index: Korchnoi - Kasparov, Olympiad, Lucerne 1982

1. Introduction
2. After 12...Ra8-b8
3. After 15.e2-e4
4. After 17.f2-f4
5. After 19...Na3-b5(xP)
6. After 22.Nb5-a3
7. After 23...Qb6-b2(xP)
8. After 29.Nc4-e5(xB)
9. After 32...Nf2-d3
10. Post Mortem