The first was against a lower-rated player, Pascal Verneuil (2065), with David as White:
... Rxc1 20. Rxc1 Rc8 Black continues his quest to simplify and 'half out'. 21. Rc5! This keeps the winning chances alive ... Rxc5? Natural though wrong as now White has a 3 - 1 queenside majority, better than the previous 2 - 1 majority. 22. dxc5 Kf8 23. Bd6+! Part of a cunning plan to restrict the Black king. ... Ke8 24. c6! If Black were allowed to get in Bd7, he has hopes of drawing. ... Kd8 25. Kc3 Be4 26. Kd4! Exceptionally strong as Black cannot push his d-pawn in exchange for White's c-pawn. ... Bxg2 The pawn parity is irrelevant. 27. b4 Bf1 28. a4 Bc4 29. Kc5 The passed pawns cannot be stopped. ... Bb3 30. b5! Resigns.
In the second position David was Black against IM Alessio Valsecchi (2418):