Chess Analysis AI

OPENINGS

Fix the opening you just lost in.

Every line ships with the idea and the typical mistake — so you learn plans, not memorized moves. Pick one for White, one for Black, drill until automatic.

♙ White repertoire — play for the center

Solid • beginner-proof

London System

1. d4 d5 2. Bf4 Nf6 3. e3 e6 4. Nf3 c5 5. c3 Nc6

Idea: Same setup every game: bishop out before the pawn chain locks, then Nbd2–c3–Bd3. You play ideas, not memorization.

Avoid: Don't lock with c3+e3 too early — Black's …c5 break punishes a passive center.

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Beginner • principled

Italian Game

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 a6

Idea: Develop fast, castle fast, then c3+d4 to claim the center. Every move fights for e5.

Avoid: The Fried Liver (Ng5) only works if Black errs — learn the quiet Giuoco Piano first.

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Classic • central

Queen's Gambit

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. e3 O-O

Idea: Offer a pawn you get back to build a queenside majority. Follow with Nf3, e3 and pressure on c5.

Avoid: Recapturing with the queen too early invites …Nc6 tempos — use the knight or pawn.

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Aggressive • flexible

Vienna Game

1. e4 e5 2. Nc3 Nf6 3. f4 d5 4. fxe5 Nxe4 5. Nf3 Nc6

Idea: Delay Nf3 to keep f-pawn options (f4 gambits) and dodge the Petroff. Transposes well if Black plays passively.

Avoid: 2…Nf6 attacks e4 immediately — defend calmly with d3, don't panic.

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Solid • low theory

Colle System

1. d4 d5 2. Nf3 Nf6 3. e3 e6 4. Bd3 c5 5. c3 Nc6

Idea: Build the e4 break behind Nbd2–Bd3–c3. One pawn break to learn, playable against almost anything.

Avoid: Telegraphing e4 lets …c5 counterplay — time the break when your pieces back it.

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Sharp • attacking

Evans Gambit

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. b4 Bxb4 5. c3 Ba5

Idea: Sacrifice the b-pawn for lightning development and a monster center with c3+d4. Club players crack under the pressure.

Avoid: If Black returns the pawn to simplify, don't chase — keep the initiative, not the material.

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Classic • positional

Ruy Lopez

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7

Idea: Pressure e5 through the pin and build slowly: c3, d4, Nbd2–f1–g3. The grind that made champions.

Avoid: Don't rush d4 before finishing development — Black's center holds and your e-pawn hangs.

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Direct • open

Scotch Game

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nf6 5. Nc3 Bb4

Idea: Open the center on move 3 while ahead in development. Simple plans: castle, centralize rooks, attack.

Avoid: Trading everything when ahead in development kills your edge — keep tension, not symmetry.

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Romantic • chaos

King's Gambit

1. e4 e5 2. f4 exf4 3. Nf3 g5 4. h4 g4 5. Ne5 Nf6

Idea: Sacrifice a flank pawn to drag Black's king into the open and develop with gain of time. Maximum practical chances.

Avoid: This is a lifestyle, not a sideline — if you hate defending chaos, play the Vienna instead.

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Flexible • strategic

English Opening

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Bg2 O-O

Idea: Control d5 from the flank and choose your center later: e3+d4 or full aggression with f4. Sidesteps all 1. e4 prep.

Avoid: Flank play without central control drifts — time one d4 or f4 break or Black takes over.

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♟ Black repertoire — break, don't bend

Solid • counter-attacking

Caro-Kann

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6

Idea: Challenge e4 without blocking the light bishop. Take on d5, develop …Bf5 before …e6, then strike back.

Avoid: The Advance (e5) cramps you — meet it with …c5 breaks, not passive waiting.

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Sharp • winning

Sicilian Najdorf

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6

Idea: Half-open c-file + …e5 control. You accept a worse structure for dynamic piece play and queenside expansion.

Avoid: Memorize ideas (…e5, …b5, …Be7), not 25-move lines — one wrong move order drops a center pawn.

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Solid • strategic

French Defense

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5

Idea: Let White build the center, then undermine it with …c5 and …Nf6. Your games become about pawn breaks, not tactics.

Avoid: The bad light-squared bishop is the lifelong project — trade it via …b6–Ba6 or live with it.

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Aggressive • unbalanced

Dutch Defense

1. d4 f5 2. g3 Nf6 3. Bg2 e6 4. Nf3 d5 5. O-O Bd6

Idea: Unbalance from move one: kingside attack with …Nf6–g6–Bg7 and …e5 breaks. White's preparation often ends here.

Avoid: Staunton Gambit (e4!) punishes greed — know the …d5 response cold.

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Flexible • hypermodern

Pirc Defense

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f4 Bg7 5. Nf3 O-O

Idea: Let White overextend, then chop the center with …c5 or …e5 once your king is safe. Great vs 1. e4-only players.

Avoid: The Austrian Attack (f4) demands respect — castle quickly and counter, don't grab pawns.

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Simple • low theory

Scandinavian

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 Nf6 5. Nf3 Bf5

Idea: One strike at the center, queen out, develop with tempo. Ten moves of theory covers 90% of club games.

Avoid: Queen retreats lose time — prefer …Qa5 lines where the queen stays active.

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Sharp • opposite wings

Sicilian Dragon

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6

Idea: Fianchetto the bishop to burn down the long diagonal, castle fast, then race: your queenside vs White's kingside.

Avoid: The Yugoslav Attack (Be3+f3+Qd2) is the critical test — know the …h5 and …d5 ideas or get mated.

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Dynamic • counterpunch

King's Indian Defense

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O

Idea: Let White build the big center, then demolish it with …e5 or …c5. Lose the opening battle, win the middlegame war.

Avoid: Passive play gets crushed — if you never push …e5 or …c5, you're just worse with a fianchetto.

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Solid • principled

Nimzo-Indian

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5

Idea: Pin the knight and saddle White with doubled pawns after …Bxc3. Control e4 without locking your own bishop.

Avoid: Giving up the bishop pair means nothing if your structure stays superior — don't fear …Bxc3.

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Rock-solid • modern

Slav Defense

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. a4 Bf5

Idea: Support d5 without walling in the light bishop like the …e6 Slavs do. Take on c4, hold it with …b5, develop freely.

Avoid: Greedy pawn-grabbing without …b5 and development lets White's center roll — secure, then develop.

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