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Rat Defense: Small Center Defense: what should White play?
Best move
h3+1.07
By playing h3, you are playing a high-level prophylactic move. You secure the g4 square, preventing any annoying pins or jumps from the Black pieces, while preparing a flexible…
- Games played
- 1.06M
- To move
- White
- Evaluation
- +1.07
- Depth
- 25
Game counts: Lichess opening book. Move ranking and evaluation: Stockfish. How this page is built
Why h3 is the best move
h3! — Excellent Choice!
✅ One of 4 top moves — you found a winning strategy!
Why this move is excellent:
By playing h3, you are playing a high-level prophylactic move. You secure the g4 square, preventing any annoying pins or jumps from the Black pieces, while preparing a flexible setup for your own kingside development.
Multiple Valid Strategies
This is a rich position where White has four distinct, equally powerful ways to claim an advantage:
| Move | Eval | Style / Strategic Idea |
|---|---|---|
| h3 | +1.07 | Prophylactic: Denies Black counterplay on g4. |
| c4 | +1.06 | Space-Grabbing: Challenges the center and prepares a queenside bind. |
| Bf4 | +1.05 | Active Development: Places the f4 on a strong, natural diagonal. |
| Bd3 | +0.98 | Solid/Classical: Develops the minor piece and prepares for O-O. |
Different paths, same destination: While most humans instinctively reach for Nc3, your choice of h3 is a sophisticated engine-preferred move that 0% of human players typically find! Whether you choose the aggressive central pressure of c4 or the patient preparation of h3, White maintains a significant +1.0 advantage.
Your Continuation
After h3:
Nf6 Bd3 Nbd7 O-O e5
What Made This Move Good
You correctly saw: That there was no immediate rush to develop the b1. By taking a moment for h3, you ensure that when your pieces do come out, Black has no tactical tricks to disturb them.
📚 Takeaway: When you have multiple "best" moves, it’s a sign of a dominant position. You chose the most precise, modern approach!
What else gets played here
Move choices from 1.06M games in the opening book, with the engine's evaluation of each.
| Move | Evaluation | Played | Games | White score |
|---|---|---|---|---|
| Nc3 | +0.84 | 460K | 53% | |
| c4 | +1.06 | 324K | 53% | |
| Bd3 | +0.98 | 256K | 55% | |
| Bf4 | +1.05 | 14K | 53% | |
| h3Engine pick | +1.07 | 9.5K | 53% |
More positions in the Rat Defense
- Best moveBd3Bishop f1 → d3Rat Defense: Small Center Defense7.93M games
- Best moved4Pawn d2 → d4Rat Defense: Harmonist1.01M games
- Best moveexf5Pawn e4 → f5Rat Defense: Balogh Defense587K games
- Best moveBe3Bishop c1 → e3Rat Defense: Small Center Defense413K games
- Best moveQg4Queen d1 → g4Rat Defense: Small Center Defense141K games
- Best moveNf3Knight g1 → f3Rat Defense: Small Center Defense137K games
Frequently asked questions
What is the best move for White in the Rat Defense: Small Center Defense?
h3 (+1.07). By playing h3, you are playing a high-level prophylactic move. You secure the g4 square, preventing any annoying pins or jumps from the Black pieces, while preparing a flexible…
Why is h3 the best move here?
By playing h3, you are playing a high-level prophylactic move. You secure the g4 square, preventing any annoying pins or jumps from the Black pieces, while preparing a flexible setup for your own kingside development.
How often does this position occur?
This position has been reached 1.06M times in the opening book.