[Event "IBM"]
[Site "Amsterdam"]
[Date "1971.07.21"]
[Round "8"]
[White "Adorjan, Andras"]
[Black "Ree, Hans"]
[Result "1/2-1/2"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. g3 Be7 7. Bg2 O-O 8. O-O a6 9. Be3 Qc7 10. g4 Nc6 11. g5 Nd7 12. Qh5 g6 1/2-1/2