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Shakhriyar Mamedyarov vs Pavel Tregubov
XXII Reykjavik Open (2006), Reykjavik ISL, rd 7, Mar-12
Semi-Slav Defense: Marshall Gambit. Main Line (D31)  ·  1-0

ANALYSIS [x]

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Kibitzer's Corner
Mar-21-06  notyetagm: The <exchange on the d7-pinning square>, 26 ♖xd7! ♖xd7 27 ♖d1 ♖h8 28 ♕a4! and Black resigns.

Why? Because 28 ♕a4! adds yet another attacker to the fully pinned and <loose> (2 attackers, 2 defenders) d7-rook, putting it en prise. If Black meets this threat by defending the d7-rook again the only way he can with 28 ... ♕e7, then White wins a piece with 29 ♕c6+, the White queen staying in contact with the Black d7-rook while she drives off the c8-king defender (<remove the guard>). That is, 28 ... ♕e7 29 ♕c6+ ♔b8 30 ♖xd7 ♖xd7 31 ♕xd7 and White has an extra bishop.

28 ♕a4! is the move that Mamedyarov visualized when he played 26 ♖xd7!. <The White queen gains access to the critical c6-square for free (with tempo) by attacking the loose d7-rook.> It is this tactical point that Tregubov missed but Mamedyarov saw.

May-27-07  notyetagm: <28 ♕a4! is the move that Mamedyarov visualized when he played 26 ♖xd7!. <The White queen gains access to the critical c6-square for free (with tempo) by attacking the loose d7-rook.> It is this tactical point that Tregubov missed but Mamedyarov saw.>

This really is a beautiful <PETITE COMBINAISON> by Mamedyarov.

Mar-09-08  mistreaver: In many Mamedyarov's notable games the opening was Slav. Why do people keep playing that against him?
Mar-09-08
Premium Chessgames Member
  Gilmoy: This game follows "well-known" theory through 8..Na6 (>100 games in the database), and "less-known" theory through 11..O-O-O (~10 games). The games histogram at each move is:

(2337) 3..c6
------
(311) 4.e4 -- this must be Marshall's gambit
(245) 4..dxe4 5.Nxe4
(224) 5..Bxb4+
(192) 6.Bd2
(187) 6..Qxd4 7.Bxb4 Qxe4+
(161) 8.Be2
(105) 8..Na6
------
(34) 9.Bd6
( 9) 9..e5 10.Nf3 Bg4
( 8) 11.O-O O-O-O
( 2) 12.b4 Nf6
------
( 1) 13.c5= N Vitiugov vs D Frolyanov, 2006

Mamedyarov diverges with 13.Re1. 12.b4 amounts to a 2nd pawn sac, as White can't (or chooses not to) outrace Black's Q+N double on it. White's compensation is half-open b+c files to Black's K, with free tempi as he kicks Black's Q around.

GMs rarely stumble into 2-pawn gambits, so Mamedyarov must have done some deep home prep for this line. <mistreaver> is right: he's just better prepared.

Mar-10-08  mistreaver: I like how white builds up with gain of tempo on every move starting with 17 rc1
Jun-23-08  notyetagm: <notyetagm: <28 Qa4! is the move that Mamedyarov visualized when he played 26 Rxd7!. <The White queen gains access to the critical c6-square for free (with tempo) by attacking the loose d7-rook.> It is this tactical point that Tregubov missed but Mamedyarov saw.>

This really is a beautiful <PETITE COMBINAISON> by Mamedyarov.>

White to play: 26 ?


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26 ♖e7x♘d7! is a beautiful 2700-level example of the tactical theme <EXCHANGE ON THE PINNING SQUARE>.

Position after 26 ♖e7x♘d7!


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Jun-23-08  notyetagm: Position after 28 ♕a3-a4! 1-0


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The game continuation would have been 28 ... ♕f6-e7 29 ♕a4-c6+, <REMOVING THE GUARD> of the 3-3 <LOOSE> Black d7-rook by <DRIVING OFF> the Black c8-king defender.

(VAR) Position after 28 ... ♕f6-e7 29 ♕a4-c6+ <remove the guard>


click for larger view

I just love how Mamedyarov (White) uses the <PIN> against the Black c8-king to create a <LOOSE> piece (Black d7-rook) and then exploits the <LOOSENESS> aspect and -NOT- the <PINNESS> aspect to win material.

Jun-23-08  notyetagm: Mamedyarov vs P Tregubov, 2006

White to play: 26 ?


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An amazingly simple winning formula by Mamedyarov:

1) Create a powerful <PIN AGAINST THE KING>


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2) <REINFORCE THE PIN>


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3) As the <PINNED> piece is also <LOOSE>, and <LPDO>, win the <PINNED> -AND- <LOOSE> piece using the underrated (-- Heisman) <REMOVAL OF THE GUARD>


click for larger view

Mamedyarov makes beating a 2556-rated player look as simple as 1,2,3. :-)

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