The Sokolsky Opening (1.b4) looks odd, but it's not a free gift — you need to know how to meet it. The most principled reply is 1...c5, attacking the b-pawn immediately. After 2.bxc5, you reach a crucial crossroads. Stockfish rates the position +0.36, a small edge for White, meaning you are slightly worse — but the evaluation is sensitive to your next move. Choose correctly and you nearly equalise; choose wrong and White's advantage grows. This page shows you the exact move that engine analysis recommends, which replies are most popular in real games, and which common moves actually harm your chances. Use the interactive drill below to practise the right response until it feels natural.
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Practice playing against the Sokolsky Opening: c5
Free, no signup — you play black, the engine adapts to your level.
Ready to make the Sokolsky Opening feel like a gift for Black? Jump into the interactive drill below — play 2...e5 against a training engine that adapts to your
Find your own #1 mistake — free →The Critical Moment: Your First Move After 2.bxc5
After 1.b4 c5 2.bxc5, you have the chance to immediately challenge White's temporary pawn grab. The engine's top choice is e5, scoring +0.36. This move does two things at once: it stakes a claim in the centre and prepares to recapture the c5-pawn with your bishop (after ...Bxc5). The engine's suggested continuation runs 2...e5 3.e3 Bxc5 4.Nf3 — a natural developing line where Black has active piece play and central influence. Statistically, this move also performs best for Black: across nearly 20,000 games, White only scores 49.1% when Black plays 2...e5, the lowest winning percentage White achieves against any of the main replies. In other words, 2...e5 gives you your best practical chances.
What the Numbers Say: Popular Replies Compared
No other move scores as well for Black as 2...e5. Here is how the most-played options stack up across over 100,000 games at this exact position (overall: White 52.5%, Draw 3.5%, Black 44.0%):
- 2...e5 (19,727 games) – White scores 49.1%, your best percentage.
- 2...e6 (27,231 games) – White scores 55.3%, a poor result for Black.
- 2...Nc6 (24,371 games) – White scores 52.9%, slightly better for White than Black.
- 2...Qa5 (9,225 games) – White scores 49.7%, quite solid for Black.
- 2...Nf6 (5,331 games) – White scores 49.3%, also solid.
- 2...d6 (3,952 games) – White scores 54.9%, clearly favouring White.
The picture is clear: 2...e6 and 2...d6 give White an easy time, while 2...e5 forces White to work for any advantage.
Two Traps to Avoid: Nc6 and d6
The statistics alone might make you cautious about 2...Nc6 and 2...d6, but the engine gives an even stronger warning. Both are classified as inaccuracies in this position.
2...Nc6 loses roughly 0.5 pawns of advantage compared to the best move. It looks natural — you develop a piece and defend the pawn on e5 if you later play it — but the engine says it's a mistake. The better move was 2...e5.
2...d6 is even worse, losing about 0.6 pawns. It's passive: it doesn't challenge White's centre or develop a piece. Again, the engine points to 2...e5 as the superior alternative.
Both moves produce positions where White's advantage grows beyond the +0.36 baseline. Avoid them unless you're willing to defend a slightly worse position.
Why 2...e5 Works: A Simple Plan
When you play 2...e5, you're following a standard principle: occupy the centre to punish White's early flank sortie. After 3.e3 (White's most common reply to protect the c5-pawn), you recapture with 3...Bxc5, developing your bishop to an active diagonal. White's 4.Nf3 develops naturally, but you have already established a strong central pawn on e5 and a well-placed bishop.
Your plan from here is straightforward: finish development (Nf6, O-O, Re8), keep an eye on the centre, and look for chances to push ...d5 or ...e4 when White's pieces are not well coordinated. White's queen's bishop can become a problem for them, and your active pieces often compensate for White's extra central control. The position remains tense, but you have avoided the pitfalls that catch many Black players in this opening.
Results across 100,522 Lichess games
| Most-played continuation | Games | White wins | |
|---|---|---|---|
| 1 | e6Main line | 27,231 | 55.3% |
| 2 | Nc6 | 24,371 | 52.9% |
| 3 | e5 | 19,727 | 49.1% |
| 4 | Qa5 | 9,225 | 49.7% |
| 5 | Nf6 | 5,331 | 49.3% |
| 6 | d6 | 3,952 | 54.9% |
Frequently asked questions
Is 1.b4 c5 a good way to surprise Black?
Yes, the Sokolsky is an offbeat opening, and many Black players are caught off guard. But with 1...c5 you meet it directly, and if you follow up with 2...e5 you can reach a comfortable position. The engine evaluates the resulting line at +0.36, meaning White has only a small edge — far less than they would get from a standard opening like 1.e4 or 1.d4.
Why is 2...Nc6 a mistake in the Sokolsky?
The engine identifies 2...Nc6 as an inaccuracy that loses about 0.5 pawns of advantage compared to the best move (2...e5). It develops a piece, but it doesn't challenge White's centre or recapture the c5-pawn quickly. White can consolidate their grip, and you end up slightly worse than necessary.
What does the engine recommend after 1.b4 c5 2.bxc5?
The engine's top choice is 2...e5, followed by 3.e3 Bxc5 4.Nf3. This line gives Black active development and a central presence. Statistically, White only scores 49.1% after 2...e5, the worst White result of any popular reply.
Do I need to memorise a lot of theory for the Sokolsky?
Not much. The position after 1.b4 c5 2.bxc5 is relatively unexplored compared to mainline openings. Focus on the key idea: play 2...e5, recapture the c5-pawn with your bishop, develop naturally, and you will reach a playable middlegame without needing to memorise deep variations.
How many games feature the Sokolsky Opening: c5?
Over 100K Lichess games have reached the Sokolsky Opening: c5 position. White wins 52.5%, Black wins 44.0%, with 3.5% draws — based on real rated games.