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Gelfand Variation
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Lessons from Petrosian
Explained and Chess Openings for White
CLEARANCE - Sokolsky Opening Chess Rules Gelfand VariationThe Sokolsky Opening (also known as the Orangutan or Polish) is an uncommon chess opening that begins with the move: 1. b4 According to various databases, out of the twenty possible first moves from White, the move 1. b4 ranks ninth in popularity. It is considered an irregular opening, so it is classified under the A00 code in the Encyclopaedia of Chess Openings (ECO).