Chess Board
[ECO code C55 > 59] Do not scroll the screen..! Move Move Move Move Move Move Here Move Here Move Here Move Here Move Here
THE TWO KNIGHTS DEFENCE
White's KB attack on the Black king's current weak point KB2(f7) was not an immediate threat.
Black leaves the "Dorsal Fin", deploying Knight to KB3(f6) to attack White's KP at the incautious expense of cutting his queen's control of KKt4(g5). Black's last two moves form the Two Knights Def., major alternative to the Giuoco Piano. B-Alt.
     White   Black
 1.  P-K4    P-K4
 2.  Kt-KB3  Kt-QB3
 3.  B-B4    Kt-B3 Transp.from Petroff
WHITE to Move or Undo or Jump or Clear
 
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When castling always touch the king first
Under FIDE laws of chess, if a player deliberately touches a rook and then his king, he is not allowed to castle on that side on that move but must still move the rook if legally possible.

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Chess Board

WHITE moves Queen's Pawn:

P-Q3 (d3) or P-Q4 (d4) ?

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