Source Lichess
Black isn't shown winning more often than losing at this level
how far wins run ahead of losses, 90% confident
At All Ratings, Nimzo-Indian Defense: Spielmann Variation, Romanovsky Gambit keeps Black's wins running −4.8% ahead of its losses at worst, 90% confident, from 5.8K Lichess games. The games don't show this gambit paying at this level. Win rate, draw rate and loss rate come from games played December 2023 to November 2025.
| Rating | Edge at worst | Black Win | Draw | Black Loss | Games |
|---|---|---|---|---|---|
| 1400-1599 | −2.6% | 55.5% | 2.4% | 42.2% | 104 |
| 1600-1799 | +0.4% | 53.8% | 2.8% | 43.4% | 269 |
| 1800-1999 | −2.5% | 49.1% | 5.1% | 45.8% | 786 |
| 2000-2199 | −9.9% | 44.7% | 4.7% | 50.6% | 1.7K |
| 2200-2499 | −8.5% | 44.1% | 6.9% | 49.0% | 2.1K |
| 2500+ | −10.8% | 43.0% | 9.1% | 47.9% | 772 |
At some ratings. Black comes out ahead at 1600-1799; at the other ratings we can see, the games do not show it paying. Where it pays changes with the clock, so set yours above and look again.
Black wins 45.7% of Nimzo-Indian Defense: Spielmann Variation, Romanovsky Gambit games, draws 6.0% and loses 48.4%. That rests on 5.8K games from Lichess.
1600-1799. There Black wins at least 0.4 more of every 100 games than it loses (90% confident), its highest Edge at worst.
Rapid. For Black, the Edge at worst — how far wins run ahead of losses, 90% confident — is −6.7% in Blitz (3.5K games) and +6.3% in Rapid (361 games).
Yes. The first rating where the games do not show Black coming out ahead is 1600-1799 in Bullet, 1400-1599 in Blitz and 2000-2199 in Rapid.
The Nimzo-Indian Defense: Spielmann Variation, Romanovsky Gambit is very sharp: 6.0% of its games are drawn, so 94.0% end with a winner.
At 1600-1799, where Black comes out ahead. At the other ratings we can see, the games do not show it paying. Where it pays changes with the clock, so set yours above and look again.
As White, take the material, then develop fast, castle early, and trade pieces. Give the material back when doing so kills the attack. At 1600-1799, Black still comes out ahead in these games; at the other ratings we can see, the games do not show the gambit paying.
This rests on 5.8K games from Lichess. Every figure carries the range it is in, 90% confident, and the table above shows how many games sit behind each rating and each clock — the fewer there are, the wider that range.