Play With TheoryKing's Pawn Game · II. Semi-Open Game
Modern Defense
The Modern Defense (or Robatsch Defense) is a hypermodern setup that can be employed against most setups by White, including 1.d4 and 1.c4. Strategic ideas in the Modern tend to be complex, with little margin for error, making it a relatively difficult opening for beginners.
- Side
- black
Characteristics
- 🔱 FlexibleCan branch into either sharp or quiet structures depending on move order and player choices.
- ✨ HypermodernAllows the opponent central space early, then aims to undermine that center with piece pressure.
- ⏳ TheoreticalNeeds concrete preparation, but not necessarily the extreme depth of the heaviest theory openings.
- 🔀 TranspositionalOften reaches other openings through move-order changes, so lines overlap with nearby repertoires.
- 💎 UncommonLess common in practice, which can reduce opponent familiarity.
- 🍂 Very AttainableAppears extremely often relative to other openings, so practice opportunities are abundant.
Strategic guide
Plans and motifs
- Much like the Pirc Defense, Black intends to play on dark squares with ...Bg7, ...d6, and the central thrust ...c5 (and occasionally ...e5).
- The main difference is that in the Modern, Black delays the move ...Nf6, so there is no immediate threat on White's e-pawn.
- If White has played Nc3, Black can play for queenside expansion with ...a6 and ...b5, threatening to dislodge White's knight with ...b4.
Theory map
Common lines
- After main line 2.d4 Bg7:
- After 3.Nc3:
- 3...d6 — Standard Line
- 3...c5 — Pterodactyl Defense
- 3.c4 d6 4.Nc3 — Averbakh System
- May transpose into King's Indian, Pirc, Hippo, Sicilian Dragon, or Benoni lines.