Rapport-Jobava System: what should White play?

In the Rapport-Jobava System, the critical move for White is h4, which immediately challenges Black's kingside fianchetto structure with an engine evaluation of +0.30. White capitalizes on Black's pawn commitments on d5 and g6 to launch an aggressive flank thrust, scoring 55.9% across 13K recorded games.

The Aggressive Thrust: 5. h4

The flank advance h4 accounts for 29.1% of recorded games from this position and yields the highest performance for White among the primary candidates. By pushing the h-pawn, White threatens to disrupt Black's kingside before Black can comfortably complete piece development. An illustrative continuation demonstrates this dynamic: h4 h5 Nf3 Bg7 Qd2 O-O. In this line, White quickly develops the remaining pieces while fixing Black's kingside pawn structure.

Developing Alternatives: 5. Nf3 and 5. Be2

The most frequently played option is Nf3, appearing in 48.1% of games (21K recorded) with an evaluation of +0.29 and a 50.5% score for White. This standard developing move often transposes into similar kingside ideas, as shown in the line Nf3 Bg7 h4 h5 Qd2 O-O. Alternatively, Be2 represents a quieter approach chosen in 11.9% of games (5.2K recorded), scoring 53.3% with an evaluation of +0.26. The continuation Be2 Bg7 Nf3 O-O Ne5 c5 highlights a central confrontation where White establishes a knight outpost on e5.

Positional Nuances: 5. h3 and 5. Qd2

White also tests secondary setups such as h3, which appears in 6.6% of games (2.9K recorded) with an evaluation of +0.20 and a 52.0% score, illustrated by h3 Bg7 Be2 c5 Nf3 O-O. Less common is Qd2, selected in 4.4% of games (1.9K recorded, eval +0.09, White scoring 53.4%), where Qd2 b5 h4 e6 Be2 Nbd7 allows Black immediate counterplay on the queenside while White continues flanking maneuvers.