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By playing b4, the player enters the Sicilian Defense: Portsmouth Gambit, a system within the Sicilian Defense complex. Deviating from the popular Sicilian Defense (Bb5), this line chooses b4. It succeeds by sacrificing popularity for a statistically stronger weapon. This move challenges the opponent.
From here, play often proceeds with cxb4, leading into the Sicilian, Portsmouth Gambit. Data analysis shows a 43% win rate for White, indicating White advantage.
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