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Ero sivun ”Shakki/r1bqkbnr;1ppp1ppp;p1n5;4p3;B3P3;5N2;PPPP1PPP;RNBQK2R b KQkq” versioiden välillä

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Raimondo (keskustelu | muokkaukset)
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Raimondo (keskustelu | muokkaukset)
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Rivi 45:
 
{{Käännettävä}}
The last two moves ...a6 and Ba4 have made no substantial change to the position, therefore Blacks options are much the same as they were on his previous move, although they are now known as deferred defences.
By far the most commonly played Black third move in the Ruy Lopez game is the Morphy Defence, 3...a6, which "puts the question" to the white bishop. Although 3...a6 was known earlier, it became popular after it was played by Paul Morphy. White has only two good options, 4. Bxc6 or 4. Ba4. The main point to 3...a6 is that after the common retreat 4.Ba4, Black will have the possibility of breaking the pin on his queen knight by playing ...b5. In fact, White must take some care to not fall into the Noah's Ark Trap in which Black traps Whites king bishop on the b3-square with a ...a6, ...b5, and ...c4 pawn advance on the queenside.
 
4...Nf6 is the most often played move and is referred to as the main line (rather than the Berlin Deferred). It attacks Whites currently undefended e-pawn and helps prepare kingside castling.
 
4...d6 is the Steinitz Deferred. Much more popular than the true Steinitz Defence, it cuts out any threats to the e-pawn and reserves the option of an f5 push.
 
===Aiheesta muualla===
Noudettu kohteesta ”https://fi.wikibooks.org/wiki/Shakki/r1bqkbnr;1ppp1ppp;p1n5;4p3;B3P3;5N2;PPPP1PPP;RNBQK2R_b_KQkq”