Tree path 9 levels King's Pawn Game › Pirc Defense › Pirc Defense › Pirc Defense › Pirc Defense › Austrian Attack › Pirc Defense: Austrian Attack › Unzicker Attack › Bronstein Variation

B09

Pirc Defense: Austrian Attack, Unzicker Attack, Bronstein Variation

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Overview

Pirc Defense: Austrian Attack, Unzicker Attack, Bronstein Variation is a variation within the Semi-Open Games family, indexed as ECO B09.

The Semi-Open Games group covers semi-open games — replies to 1.e4 where Black declines the symmetrical 1…e5 in favour of an asymmetric pawn structure.

The line arises from 13 plies — specifically the moves 1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f4 Bg7 5. Nf3 O-O 6. e5 Nfd7 7. h4.

It is a variation of Pirc Defense: Austrian Attack, Unzicker Attack, which itself descends from the root opening King's Pawn Game.

Step through the moves on the interactive board below, review the live Lichess statistics, or play this position against Stockfish at one of six difficulty levels.

ECO code: B09
Group: Semi-Open Games (B)
Plies: 13
Parent: Pirc Defense: Austrian Attack, Unzicker Attack

This overview is generated automatically from the opening's metadata. Know this line well? Write a description — submissions are reviewed before publishing.

Statistics from Lichess

31,835 games · White 61.7% / Draw 3.8% / Black 34.5%

Moves	Games	W / D / B
c5	22,281
h5	6,531
dxe5	1,271
Nb6	695
e6	387
Nc6	219
c6	130
h6	68

Source: Lichess Opening Explorer · cached 2026-09-26 02:46:46

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