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Flank Opening
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Irregular Opening
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King's Pawn Opening
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Queen's Pawn Opening
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Pawn Chain Pointing to the Queenside
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Pawn Chain Pointing to the Kingside
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Strong Pawn Center
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Closed Center
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Open Center
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Center Controlled Indirectly
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Queenside Space Advantage
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Central Space Advantage
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Kingside Space Advantage
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King Not Yet Castled
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Kings Castled on Opposite Sides
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Lead in Development
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Alekhine's Gun
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Noah's Ark
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Pawn Storm
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Fianchetto
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Fool's Mate
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Legal's Mate
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Scholar's Mate
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