GNUCHESS is rather human-like in playing for draws when the position is "untasty". Here is a draw I've just battled with GNUCHEss 5.
[Event "Computer chess game"]
[Site "Home Computer"]
[Date "2006.07.30"]
[Round "-"]
[White "GNUChess"]
[Black "z00t"]
[Result "1/2-1/2"]
[TimeControl "40/900"]
1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Bxc6 dxc6 7. d3 Nd7
8. Nc3 O-O 9. Be3 Bf6 10. a3 Re8 11. Qe2 Nf8 12. Kh1 Ng6 13. h3 Be6 14.
Rfe1 b6 15. b3 c5 16. Qd2 h6 17. Rad1 Qd6 18. a4 Rad8 19. Kg1 Qc6 20. Qe2
Qd6 21. Kh2 Qc6 22. Rf1 Qd6 23. Rfe1 Qc6 24. Kg1 Kh7 25. Bd2 Kg8 26. Be3
{Draw} 1/2-1/2