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Queen's Indian Defence: 1.d4 Nf6 2.c4......... Bb4+
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Queen's Indian Defence: 1.d4 Nf6 2.c4......... Bb4+
Queen's Indian Defence: 1.d4 Nf6 2.c4... Bb4+
TL;DR The Nimzo-QID. Black forces White to interpose, borrowing the Nimzo’s pin themes within the Queen's Indian structure. A reliable, low-theory way to aim for early equality with automatic bishop pair activity.
Summary
- Line: 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Bb4+
- ECO: E16
- Total games recorded: 216,900
- Sharpness: Calm
- Style: Solid Defender
Historical Context & Notable Players
Arose from the Queen’s Indian Defence (1.d4 Nf6 2.c4... 4.g3)
Notable White practitioners:
- Borislav Ivkov (12 games)
- Milan Sr Vidmar (9 games)
- Max Euwe (9 games)
Notable Black regulars:
- Viktor Korchnoi (23 games)
- Laszlo Zsinka (20 games)
- Edgard Colle (14 games)
Performance Across Rating Levels
| Rating Bracket | Total Games | White Win % | Black Win % | Draw % | Sharpness |
|---|---|---|---|---|---|
| 400 Elo | 97 | 52.6% | 45.4% | 2.1% | 0.979 |
| 1200 Elo | 2,193 | 52.8% | 43.4% | 3.8% | 0.962 |
| 1800 Elo | 42,003 | 50.8% | 42.8% | 6.4% | 0.936 |
| 2500 Elo | 9,431 | 46.1% | 41.7% | 12.2% | 0.878 |
- Sharpness declines with higher elo, indicating stronger players exploit counterplay more effectively.
- White’s rating advantage erodes by 6.7pp from 1200-2500, suggesting the structure favours equal play.
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Move Diversity & Theory Depth
- 1200 Elo: Entropy score = 1.29 (broad range of responses)
- 2500 Elo: Entropy = 0.86 (highly theory-bound).
- Main White move: Bd2 (80%+ at 2500 Elo)
| Rating | Top Move % | Viable Moves | Theory Adherence % | Entropy |
|---|---|---|---|---|
| 1200 | 62.4% | 3 | 99.8% | 1.29 |
| 2500 | 78.6% | 2 | 99.3% | 0.86 |
Common Mistakes in Play
- Neglecting development → Allows overactive White strategies.
- Focuses on floating pawns instead of moving the c8-bishop quickly.
- Letting White control the center passively
- Hypermodern principles depend on active counterplay; stagnation leads to weak pawn structures.
How to Practice
- Scroll down → Play against AI bots at any level to refine understanding.
- Emphasize the piece-swing advantages rather than rote memorization.
- Test to see how the Nimzo-like pin themes arise naturally after interposition.
Quick Facts
Statistics
- White wins 49.4%
- Black wins 42.9%
- Draws 7.7%
Common Motif Borrowed from Nimzo-Indian
- Black’s quick Bb4+ fails only if White interposes logically.
- Ideal for gamblers who want thematic influence with low memorization burden.
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Related Openings
| Opening | Notes |
|---|---|
| Catalan (g3 + Bc4) | Kasparov/Carlsen favorite; g2-bishop dominates queenside long-term. |
| Catalan Main Line | Bd2 crack (take on c4/nature of flank openings) |
Frequently Asked Questions
Q: Is this good for beginners?
- Yes! Master the initial dynamic interplay over memorizing theory.
- Practice against Chessiverse AI bots at multiple ratings.
Q: Win rates?
- From 216,900 rated games:
- White: 49.4%
- Black: 42.9%
- Draws: 7.7%
Q: How to drill it?
- Repeat key flexible ideas, not BV maps.
- Use Chessverse AI dives to adapt at every rating bracket.
Reviewed By
International Master [name redacted] Learn more from their ["Climbing the Rating Ladder"](link placeholder YT series).
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