A00

Creepy Crawly Formation: Classical Defense

Chess diagram: Creepy Crawly Formation: Classical Defense after 2…e5

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

154,019 games: White 45.7% / Draw 4.2% / Black 50.1%

The moves played next. Pick one to see it on the board.
Next moveGamesWhite / Draw / BlackW / D / B
44,43844K
41,09941K
15,39215K
10,08110K
9,9949,994
8,9638,963
6,8166,816
4,2734,273

Rated Lichess games between players rated 1600 to 2500, from the Lichess opening explorer, updated Nov 1, 2026

Engine evaluation

−0.42 Black is slightly better

Best play: 3. e3 Be6 4. d4 Nc6 5. dxe5 Nxe5 6. Nf3 Bd6 7. Nxe5 Bxe5

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

Overview

Creepy Crawly Formation: Classical Defense (ECO A00, Flank Openings) is a variation of the Clemenz Opening, reached after 1. h3 d5 2. a3 e5 (2 moves).

In 154,019 rated Lichess games between players rated 1600 to 2500, White won 45.7%, Black 50.1% and 4.2% were drawn. White's most played move here is 3. e3, in 29% of those games.

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How to play against the Creepy Crawly Formation: Classical Defense

3. g3 scores best for White: 50.4%, with White winning 48.2% and Black 47.4% of 10K games. The most played, 3. e3, scores 48.4% in 44K games, and 3. d3 scores lowest: 47.7%. 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

Transpositions

Cite this page

Caissa Codex. “Creepy Crawly Formation: Classical Defense (A00)”. Lichess data as of 1 Nov 2026. https://chesscodex.org/openings/creepy-crawly-formation-classical-defense