Four knights game: bomb! c42 Petrovís defence

At first consider, please, the new extremely important theoretical novelties (discoveries) in 4 knights game, and then weíll see easy, where is their connection and their importance for theory of c42 Petrov defence (Petrovís /Petroffís defence /defense, Russian game).

So this article informs, that 4.Bf1-c4! in initial position of 4 knights game is very strong for white.

Petrovís defence (c42) can be transposed directly into four knights game in many cases (including 2 following ones, that are connected with these new discoveries).

Case 1:
1.e2-e4 e7-e5 2.Ng1-f3 Ng8-f6 3.Nb1-c3 (c42 Petrovís three knights game) 3...Nb8-c6 4.Bf1-c4!
Case 2:
1.e2-e4 e7-e5 2.Ng1-f3 Ng8-f6 3.Bf1-c4 Nf6xe4 (c42 Petrovís Italian variation) 4.Nb1-c3 (initial position of c42/c27 Boden-Kieseritsky /Boden-Kieseritzky gambit) 4...Nb8-c6 5.Nc3xe4!

We can see, that these discoveries cause a new view on blackís move 3...Nb8-c6 in initial position of Petrovís three knights game and a new view on blackís move 4...Nb8-c6 in initial position of Boden-Kieseritzky /Boden-Kieseritsky gambit.

Author: Yury V. Bukayev

Dear reader, here you can see theoretical discoveries-bombs, that change appraisal of important opening systems. You can see email-contact of Yury V. Bukayev, the inventor, the innovator, on Contacts page.

(c) Bukayev, Yury V. 2005; 2005-2015 (summaries)

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