Data

• Statistics of Professionals' Openings 2005 [Sep. 11, 2005]
• Statistics of Professionals' Openings 2006 [Aug. 25, 2007]
• Statistics of Professionals' Openings 2007 [Sep. 8, 2007]

• ECO Codes
• Statistics of Professionals' Openings
• Symbols

• Double Wing Attack: P-2d Quick Attack
• Double Wing Attack: P-8f Quick Attack
• American Opposing Rook: Versus P-5d Formation
• American Opposing Rook: Versus P-6d Formation
• White's American Opposing Rook

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