A00

Polish Opening: Baltic Defense

Chess diagram: Polish Opening: Baltic Defense after 2…Bf5

Type a move and press Enter: e4, Nf3, O-O, or from and to squares like g1f3 (e7e8q to promote). The board is also played with the mouse.

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Statistics from Lichess

275,026 games: White 52.0% / Draw 4.5% / Black 43.5%

The moves played next. Pick one to see it on the board.
Next moveGamesWhite / Draw / BlackW / D / B
163,330163K
60,86961K
12,87113K
11,97712K
7,3077,307
5,2935,293
3,6843,684
3,5403,540

Rated Lichess games between players rated 1600 to 2500, from the Lichess opening explorer, updated Nov 6, 2026

Engine evaluation

−0.12 The position is about equal

Best play: 3. e3 Nf6 4. a3 e6 5. c4 Be7 6. Nf3 O-O 7. cxd5 exd5

Stockfish 19, depth 30, after the line's last move. Scores are in pawns, from White's side.

By rating

Rating changes little here: Black scores 48% under 1400, 50% at 2200 and up (wins plus half the draws).

PlayersGamesWhite / Draw / BlackW / D / B
Under 1400 46K
1400–1799 200K
1800–2199 144K
2200 and up 8,223
Masters, over the board 25

Master games

Rated blitz, rapid and classical Lichess games by rating band, and over-the-board games of players rated 2200+ from the Lichess masters database, updated Sep 27, 2026

Overview

Polish Opening: Baltic Defense (ECO A00, Flank Openings) is a variation of the Polish Opening, with d5, reached after 1. b4 d5 2. Bb2 Bf5 (2 moves).

In 275,026 rated Lichess games between players rated 1600 to 2500, White won 52.0%, Black 43.5% and 4.5% were drawn. White's most played move here is 3. e3, in 59% of those games.

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How to play against the Polish Opening: Baltic Defense

3. Nf3 scores best for White: 55.1%, with White winning 52.8% and Black 42.5% of 61K games. The most played answer, 3. e3, scores lowest: 54.9% in 163K games. Stockfish's first choice is 3. e3.

Main answers: those played in at least 5% of these games. Score: White's wins plus half the draws, in rated Lichess games between players rated 1600 to 2500. How to play against other popular openings

Popularity by year

The Polish Opening: Baltic Defense dipped to 0.0095% of Lichess games in 2020 and has recovered since: 0.011% in 2025.

Numbers by year
YearShare of gamesGames
20160.012%4,213
20170.012%6,400
20180.01%8,214
20190.011%13,161
20200.0095%27,938
20210.01%39,764
20220.011%40,358
20230.011%40,356
20240.011%39,320
20250.011%38,492
2026 (Jan–Apr)0.011%12,200

Share of rated Lichess games between players rated 1600 to 2500 (blitz, rapid and classical) that reach this position, by year; 2026: January to April. Which openings are rising and falling

Cite this page

Caissa Codex. “Polish Opening: Baltic Defense (A00)”. Lichess data as of 6 Nov 2026. https://chesscodex.org/openings/polish-opening-baltic-defense