Final position — Black is winning
Benko Gambit: Wins a Pawn (Spassov–Adorjan) #2
Black wins in 11 moves with a decisive material gain. (Spassov - Adorjan, Sochi 1977)
The moves
| 1. | d4 | Nf6 |
| 2. | c4 | c5 |
| 3. | d5 | b5 |
| 4. | Nf3 | g6 |
| 5. | g3 | Bg7 |
| 6. | Bg2 | d6 |
| 7. | cxb5 | a6 |
| 8. | bxa6 | Qa5+ |
| 9. | Nc3 | Ne4 |
| 10. | Qc2 | Nxc3 |
| 11. | Bd2 | Qa4 |
How the Benko Gambit: Wins a Pawn (Spassov–Adorjan) #2 works
The Benko Gambit: Wins a Pawn (Spassov–Adorjan) #2 is a classic chess opening trap arising from the Benko Gambit. In this line Black wins decisive material by move 11, punishing a natural-looking but losing idea from White.
The full sequence runs 1.d4 Nf6 2.c4 c5 3.d5 b5 4.Nf3 g6 5.g3 Bg7 6.Bg2 d6 7.cxb5 a6 8.bxa6 Qa5+ 9.Nc3 Ne4 10.Qc2 Nxc3 11.Bd2 Qa4. Each move looks reasonable, which is exactly why the trap is so effective over the board — White walks into it while trying to play "normal" developing moves.
This pattern is well known from master and correspondence play (Spassov - Adorjan, Sochi 1977). Recognising it early lets you either spring it as Black or sidestep it as White.
Practice this trap move-by-move
Open the Benko Gambit: Wins a Pawn (Spassov–Adorjan) #2 in the Trapsterapp to play it out on a live board, drill it in practice mode, and learn how to avoid it when it's set for you — along with the full library of chess traps and gambits, fully offline.