[Event "IBM"]
[Site "Amsterdam"]
[Date "1972.??.??"]
[Round "?"]
[White "Hartoch, Robert G"]
[Black "Ree, Hans"]
[Result "1/2-1/2"]

1. Nf3 c5 2. g3 g6 3. Bg2 Bg7 4. O-O Nc6 5. c3 Nf6 6. d4 cxd4 7. cxd4 d5 8. Ne5 Nxe5 9. dxe5 Ne4 1/2-1/2