Discoveries (theoretical novelties) in C50 giuoco pianissimo (giuoco piano /Italian game /Italian opening), changing appraisal of its very important systems, are present in this investigation.

Summary of analysis (author's novelties are marked by symbol "AN")

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.d3 h6!? 5.0-0 a6!? 6.b4!AN

Earlier we started to consider a new strong and very important gambit: 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.d3 h6!? 5.b4! (Evans-Bukayev gambit). We remember, why it isn’t a variation of Evans gambit.

Analogously, 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.d3 h6!? 5.0-0 a6!? 6.b4! isn’t a variation of Evans-Bukayev gambit, it is a new very strong and important gambit. We’ll call it as “Evans-Bukayev gambit deferred”. First of all, it should be noted, that after 6.c3 d6!AN 7.d4! ed 8.cd Ba7 (or 8…Bb6) black has an enough counter-play, and the game is equal.

Paragraph 1: 6... Ba7

[The way 6…Bb4 7.c3 leads to white’s advantage! It is clear even after analysis of Evans-Bukayev gambit (5.b4! Bb4! 6.c3).] 7.b5! ab! 8.Bb5 (White stands slightly better.) 8…Nd4 9.Nd4 Bd4 10.c3. White stands slightly better.

Author: Y.Bukayev