notyetagm: Position after 17 a1-b1
 click for larger view<Gypsy: <17...Ba6> Nothing works:I. 17...Qa5 18.Bd2...
II. 17...Qc5 18.Rc1...
III. 17...Qc4 18.Qa4...>
I simply adore this combination played by Alekhine, how it exploits the <ALIGNMENT> of the Black pieces in every variation given above. <I. 17...Qa5 18.Bd2...> Exploits the <DIAGONAL ALIGNMENT> of the Black a5-queen and Black b4-knight with the <PIN> 18 f4-d2:
 click for larger view<II. 17...Qc5 18.Rc1... > Exploits the <VERTICAL ALIGNMENT> of the Black c5-queen and Black c8-bishop with the <SKEWER> 18 b1-c1:
 click for larger view<III. 17...Qc4 18.Qa4...> Exploits the <LATERAL ALIGNMENT> of the Black c4-queen and Black b4-knight with the <LATERAL PIN> 18 d1-a4:
 click for larger viewNote that Alekhine (White) saw that the <SKEWER> 17 ... b5-c4 18 b1-c1? does -not- work in this variation because Black has the <RUBBERBAND> 18 ... a4-c6!. Black's problems in this position all stem from the simple fact that his queen is both <PINNED> to the Black b4-knight as well as being the knight's <ONLY DEFENDER>. So in attempting to <UNPIN> the queen, Black must also keep her in contact with the Black knight in order to <DEFEND> it. Keeping the Black queen in contact with the Black knight results in either a <DIAGNONAL>, <VERTICAL>, or <LATERAL> alignment that White can exploit with a <PIN> or <SKEWER>. A masterful tactical display by Alekhine in exploiting the forced <ALIGNMENT> of his opponent's pieces. |