Discoveries (theoretical novelties) in c55/c46,c47 Italian Variation, 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.Bc4 Nf6 3.Nc3 Nc6 4.Nf3!

Paragraph 1: 4...Ne4 5.Ne4 d5 6.Bd3 de

[Other moves lead to white’s advantage. For example: 6...Nb4 AN 7.Ng3!? e4 8.Be4 de 9.Ne4 Bg4! (9...Bf5 10.d3 (White stands better.); 9...Qe7 10.0-0 (White stands better.)) 10.0-0!? Bf3 11.Qf3 Nc2 12.Rb1 White stands better and has the attack.] 7.Be4 (with the threat Bc6!) White stands slightly better (this is a new appraisal).

I. 7...Bg4 8.Bc6!

[White stands slightly better. My else one new way 8.h3! Bh5 9.Bc6! bc 10.Qe2 leads to white's advantage too. The move 7...Bd6 is sharper, but the plan with Be4xc6! and black's capture of white's centre pawn creates black's weaknesses too, for example: 8.d4 (8.Bc6) 8...ed 9.Bc6! bc 10.Qd4 0-0 11.Be3!? AN with the idea 0-0-0.]

8...bc 9.Qe2 Bd6! [After 9...Bf3 white stands slightly better too.] 10.Qe4 Bd7! 11.d3! Qe7 12.0-0 [White has an idea b2-b3 and stands slightly better.]

II. 7...Nb4

(with the idea f5). After this move white wins a pawn and stands better (this is a new appraisal) in some variants. For example: 8.a3!?AN f5 9.Bf5 Bf5 10.ab (with the idea 11.Qe2 or 11.c3). White stands slightly better.

III. 7...Ne7 8.c3!

(with the idea 8...f5 9.Bc2!). White has the possibilities of underminings (by pawns) of black’s pawn centre, that lead to seizure of centre by white’s pieces. Moreover, there are black’s weaknesses of the squares e6, f7, g6, b7, that engender white’s dangerous tactical threats. White stands better (this is a new appraisal).

IV. 7...Bd7AN

[After 7...Qf6AN 8.Qe2 white stands better (this is a new appraisal). After 7...Nd4AN 8.Ne5!? Qe7 9.0-0 white stands better (this is a new appraisal). After 7...Qd6AN 8.Qe2 f6! 9.Qb5 white stands slightly better (this is a new appraisal).] 8.d4!? [White stands slightly better (this is a new appraisal).] 8...ed! [8...f6 9.de fe 10.0-0 Bd6 11.Ng5 g6 12.Bd5 (White stands slightly better.); 8...Qe7 9.0-0 (White stands better.)] 9.Nd4 Nd4 [9...Qe7 10.0-0 White stands better.] 10.Qd4 c6 11.Bf4 Be6 12.Qe5 (White stands better.)

It should be noted, that paragraph 1 has an enormous importance for theory of 1.e4 e5 chess openings!!

The auxiliary information

The initial position of Italian variation (c55/c46,c47) arises by the following 3 methods (each method doesn’t depend on rearrangements of first, second and third white's and black’s moves).

Method 1 (“c55-method”): 1.e4 e5 2.Nf3 Nf6 3.Bc4 Nc6 (c55 two knights defence) 4.Nc3 (c55/c46,c47).

Method 2 (“c46,c47-method”): 1.e4 e5 2.Nc3 Nc6 3.Nf3 Nf6 (c46,c47 four knights game) 4.Bc4 (c55/c46,c47).

Method 3 (“c28-method”): 1.e4 e5 2.Bc4 Nc6 3.Nc3 Nf6 (c28 Vienna game) 4.Nf3 (c55/c46,c47).

Thus, each method “consists of” several different sequences of entrance moves. Here are the most well-known sequences:

(method 1:)
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Nc3 Nxe4 5.Nxe4 d5 6.Bd3 dxe4 7.Bxe4 ;

(method 2:)
1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bc4 Nxe4 5.Nxe4 d5 6.Bd3 dxe4 7.Bxe4 ;
1.e4 e5 2.Nf3 Nf6 3.Nc3 Nc6 4.Bc4 Nxe4 5.Nxe4 d5 6.Bd3 dxe4 7.Bxe4 ;
1.e4 e5 2.Nc3 Nf6 3.Nf3 Nc6 4.Bc4 Nxe4 5.Nxe4 d5 6.Bd3 dxe4 7.Bxe4 ;
1.e4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.Bc4 Nxe4 5.Nxe4 d5 6.Bd3 dxe4 7.Bxe4 ;

(method 3:)
1.e4 e5 2.Nc3 Nf6 3.Bc4 Nc6 4.Nf3 Nxe4 5.Nxe4 d5 6.Bd3 dxe4 7.Bxe4 ;
1.e4 e5 2.Nc3 Nc6 3.Bc4 Nf6 4.Nf3 Nxe4 5.Nxe4 d5 6.Bd3 dxe4 7.Bxe4 ;
1.e4 e5 2.Bc4 Nf6 3.Nc3 Nc6 4.Nf3 Nxe4 5.Nxe4 d5 6.Bd3 dxe4 7.Bxe4 ;
1.e4 e5 2.Bc4 Nc6 3.Nc3 Nf6 4.Nf3 Nxe4 5.Nxe4 d5 6.Bd3 dxe4 7.Bxe4.

Author: Y.Bukayev

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