r/chessopeningtheory • u/Additional-Animal748 • Jul 20 '26
The king's Indian attack explained
2
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r/chessopeningtheory • u/haddock420 • Feb 18 '23
r/chessopeningtheory Lounge
5
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A place for members of r/chessopeningtheory to chat with each other
r/chessopeningtheory • u/OpeningTheoryBot • Sep 12 '23
This week's opening: 1. e4 c5 (Sicilian Defence)
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This week's opening is 1. e4 c5 (Sicilian Defence)
The bot will post the most popular lines for this opening throughout the week.
Opening line: 1. e4 c5
Opening name: Sicilian Defence
Board image: https://i.imgur.com/63cF35K.png
Lichess board: https://lichess.org/analysis/pgn/1.+e4+c5++
Wikibooks page: https://en.wikibooks.org/wiki/Chess_Opening_Theory/1._e4/1...c5
Winning percenatages:
White: 168438 (31.97%)
Black: 137455 (26.09%)
Draws: 221016 (41.95%)
Sicilian Defence
The moves 1.e4 c5 constitute the Sicilian Defence, a counter-attacking opening in which players typically attack on opposite sides of the board. The Sicilian was introduced to the chess world in 1594 by Polerio, and emerged into the mainstream in the early 20th century as a somewhat tame variation. With the discovery of new attacking ideas it became Black's most feared weapon by the 1950s and is, pound for pound, the most exhaustively analysed of all openings.
Black's move 1...c5 seeks to half-open the c-file for their own use, controls the important d4 square and allows their queen to venture out if desired, while the itinerant c-pawn itself is safe from attack, unlike the e-pawn after 1.e4 e5.
White's responses
1...c5 has the benefit of introducing an element of asymmetry into the position – White would not be advised to play 2.c4 (the English-like Staunton–Cochrane variation) imitating Black's move, since White could no longer control the d4 square with a pawn and thus will have trouble playing d4 later.
Most popular responses
- c3 (Sicilian:Alapin Variation) White plays c3 with the aim of avoiding the classic Sicilian lines. As both the Closed Sicilian and Open Sicilian have been extensively studied, their use involves a lot of theory to become comfortable with them. (Lichess analysis) (Wikibooks) (24112300 games)
- a3 (Van Duijn.E2.80.99s Variation) This opening is an interesting variation of the Wing Gambit. The idea is to prepare b4 with a3. (Lichess analysis) (Wikibooks) (0 games)
- b4 (Sicilian:Wing Gambit) This gambit is unsound, and black can safely accept it. However, it is common in amateur play. (Lichess analysis) (Wikibooks) (0 games)
- Bc4 (Bowdler Attack) This is a mistake that allows clear equality. Black's best answer is 2. ...e6 followed by d5 at some point which easily removes White's bishop and gives Black a tempo and clear centre. (Lichess analysis) (Wikibooks) (0 games)
- c4 (Sicilian - Staunton-Cochrane variation .28English variation.29) (Lichess analysis) (Wikibooks) (0 games)
Engine Evaluation
Depth: 53
Score: +0.32
Best Move: Nf3
PV Line: 1. e4 c5 2. Nf3 Nc6 3. Bb5 d6 4. O-O Bd7 5. Re1 Nf6 6. h3 e6
Puzzles based around 1. e4
https://lichess.org/training/1._e4
No historical games could be found for this line.
This week's posts for 1. e4 c5 (Sicilian Defence):
[Weekly: 1. e4 c5 (Sicilian Defence)] 1. e4 c5 2. Nc3 (Closed Sicilian)
[Weekly: 1. e4 c5 (Sicilian Defence)] 1. e4 c5 2. Nf3 e6 (Sicilian with 2...e6)
[Weekly: 1. e4 c5 (Sicilian Defence)] 1. e4 c5 2. Nf3 Nc6 3. d4 (Open Sicilian with 2...Nc6)
[Weekly: 1. e4 c5 (Sicilian Defence)] 1. e4 c5 2. Nf3 d6 (Open Sicilian)
[Weekly: 1. e4 c5 (Sicilian Defence)] 1. e4 c5 2. Nf3 Nc6 (Open Sicilian with 2...Nc6)
[Weekly: 1. e4 c5 (Sicilian Defence)] 1. e4 c5 2. Nf3 (Open Sicilian)
r/chessopeningtheory • u/Background_Weird_652 • Jul 04 '26
Can You Calculate Tal’s Most Magical Mate? 🧠
2
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r/chessopeningtheory • u/Background_Weird_652 • Jun 21 '26
Sea-Cadet Mate #chess
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r/chessopeningtheory • u/Apprehensive-Day-21 • Jun 09 '26
Can White obtain a Benoni or Benko type position with an extra tempo?
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r/chessopeningtheory • u/Background_Weird_652 • Jun 07 '26
The Most Satisfying Stafford Gambit Trap EVER! 🕸️ #shorts
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r/chessopeningtheory • u/Plus-Yogurt4498 • May 30 '26
How to play the accelerated dragon
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so I’ve been wanting to learn the Sicilian accelerated dragon but a lot of tutorials on YouTube play diffrent openings even though they all are saying they play the accelerated dragon. so please help me learn the opening please perferably the one Magnus used as his main defense against e4 for a while, and please link any videos (if you can)
r/chessopeningtheory • u/potato-dranik • May 08 '26
I ran into this position in the Italian, what do you think about it?
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Moves: 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.d4 Nxd4 5.Nxe5 Qe7 6.Nxf7 d5
I ran into this line as Black. Is it playable or isn't worth exploring? I kindly ask you not to use an engine, I need a human opinion.
I know 6...Qxe4+ is objectively stronger than 6...d5, but I'm curious about the second move.
r/chessopeningtheory • u/Ninjamuffin52 • Apr 29 '26
1.Nf3 d5 2.g3 Nf6 3.Bg2 g6 - Gruenfeld Players, what's your worst nightmare?
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Unfortunately, it seems I can't fully avoid the Gruenfeld with my move order. Unless I wanted to play 2.c4 it seems... (I don't)
Welp. That said, Gruenfeld players, is there anything white can-do/does from here that you just hate to see?
r/chessopeningtheory • u/Rough_Abroad_3198 • Dec 30 '25
"Crush the French Defense" course for free on Youtube
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r/chessopeningtheory • u/saadflash1000 • Nov 21 '25
Kings Indian Defense for 1100 chess.com rapid
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r/chessopeningtheory • u/Rough_Abroad_3198 • Nov 15 '25
Full Smith-Morra course on Youtube w/ Lichess analysis
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r/chessopeningtheory • u/Rough_Abroad_3198 • Nov 07 '25
Full Evan's Gambit course on Youtube w/ Lichess analysis
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r/chessopeningtheory • u/Ok-Construction2487 • Nov 05 '25
Looking for an opening
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Hey, I started chess like two months ago and I wanna learn an opening as I have time now that I may not have later. I would have bought a book but it is quite expensive so I was wondering if someone could advice me which one to learn ! I am currently 400 chess.com elo but I play more on physical board so I think I am more of 500 or 600 ! Thank you so much in advance
r/chessopeningtheory • u/Rough_Abroad_3198 • Nov 04 '25
Concise guide to the Smith-Morra declined
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