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Pirc Defense: Roscher Gambit: what should White play?
Best move
h3+0.85
Roscher Gambit, White reaches a key branching point where developing with Nc3 or putting the question to the bishop via h3 offers the most promising continuation. The engine ranks…
- Games played
- 169K
- To move
- White
- Evaluation
- +0.85
- Depth
- 22
Game counts: Lichess opening book. Move ranking and evaluation: Stockfish. How this page is built
Why h3 is the best move
In the Pirc Defense: Roscher Gambit, White reaches a key branching point where developing with Nc3 or putting the question to the bishop via h3 offers the most promising continuation. The engine ranks Nc3 slightly higher with a +0.89 evaluation, making it the most frequent choice across 56.3% of the 169,119 recorded games. Both options secure a steady space advantage in the center while maintaining active piece play.
Developing with the Knight
The primary move Nc3 develops another minor piece and supports the central pawn on e4. It scores 52.3% for White across 95K recorded games, holding the strongest performance among the main alternatives. An illustrative engine continuation runs Nc3 Nc6 Be3 e5 d5 Ne7, where White gains central space by advancing the d-pawn and pushes the black knight to an awkward post.
Challenging Black's Bishop
An alternative favored by engine evaluation is h3, which yields an engine eval of +0.85 and has been tested in 10.7% of games (18K recorded). By probing the g4 immediately, White forces Black to decide between retreating or yielding the bishop pair. In the engine line h3 Bh5 Qe2 e6 Nc3 Bxf3, White claims a score of 51.7% and retains a stable positional plus after clarifying the pin against the f3.
Slower Solid Setups
White can also opt for Bd3, played in 27.0% of games (46K recorded) with an evaluation of +0.57 and a 51.4% score, leading into lines such as Bd3 e5 d5 Nbd7 h3 Bh5. More passive setups like Nbd2 (+0.39 eval, 4.0% share) or Qd3 (+0.37 eval, 1.9% share) remain playable, but they offer somewhat lower engine assessments than developing naturally via the c3-square.
What else gets played here
Move choices from 169K games in the opening book, with the engine's evaluation of each.
| Move | Evaluation | Played | Games | White score |
|---|---|---|---|---|
| Nc3 | +0.89 | 95K | 52% | |
| Bd3 | +0.57 | 46K | 51% | |
| h3Engine pick | +0.85 | 18K | 52% | |
| Nbd2 | +0.39 | 6.8K | 51% | |
| Qd3 | +0.37 | 3.3K | 50% |
More positions in the Pirc Defense
- Best moved4Pawn d2 → d4Pirc Defense52M games
- Best movec5Pawn c7 → c5Pirc Defense30M games
- Best moveBg5Bishop c1 → g5Pirc Defense: Classical Variation7.56M games
- Best movec4Pawn c2 → c4Pirc Defense7.47M games
- Best moveNc3Knight b1 → c3Pirc Defense2.16M games
- Best moveNe2Knight g1 → e2Pirc Defense1.70M games
Frequently asked questions
What is the best move for White in the Pirc Defense: Roscher Gambit?
h3 (+0.85). Roscher Gambit, White reaches a key branching point where developing with Nc3 or putting the question to the bishop via h3 offers the most promising continuation. The engine ranks…
Why is h3 the best move here?
Roscher Gambit, White reaches a key branching point where developing with Nc3 or putting the question to the bishop via h3 offers the most promising continuation. The engine ranks Nc3 slightly higher with a +0.89 evaluation, making it the most frequent choice across 56.3% of the 169,119 recorded…
How often does this position occur?
This position has been reached 169K times in the opening book.