an Entity references as follows:
In chess, the Sicilian Defence, Alapin Variation is a response to the Sicilian Defence characterised by the moves: 1. e4 c52. c3 It is named after the Russian master Semyon Alapin (1856–1923). For many years, it was not held in high regard, since 2...d5 was thought to allow Black easy equality. The Alapin is also seen in deferred form, particularly when Black chooses an unusual second move after 2.Nf3. For example, after 2.Nf3 a6 or 2.Nf3 Qc7, 3.c3 is often seen, since neither ...a6 nor ...Qc7 are particularly useful moves against the Alapin.