Nassim Sakr vs Ali Atwi (2001)

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Nassim Sakr vs Ali Atwi
Lebanese Championship (2001), Beirut LIB, rd 1, Jul-25
English Opening: Anglo-Lithuanian Variation (A10) · 1-0

ANALYSIS [x]

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Mar-02-09		TheaN: <martinZH> and just a small clarification of what the others have said already: by doing these puzzles you also see how such a player comes to a combination. <David> is clear in stating that 25.Qc3?! is a clear mistake if 25....Rc8 26.Qxc8† is not intended. But because White knows Black would like to improve his position, he waits with 25.a4?!, in order for Black to move one of his king side pawns. Although this does not improve your chance of seeing such combination, recognizing how they play towards it when you DO see one is a very valuable lesson also. And it can happen in practice: in my recent club game I had a pending Queen sac with mate in two, and eventually 'sacced' a Rook for mate in there. Although it was rejected by my opponent it let to a won game. So you're not the only one who's not always seeing these things: after all, seeing tactical take downs leads to rejection of certain moves and more views into strategy as well, in which case we would all be GMs by now.

Mar-02-09		Dr. J: <martinZH> Welcome to the neighbourhood! You seem to be getting a lot of good responses to your query. A further point: acquiring experience, by playing, solving puzzles, and studying master games will help you two distinct ways: 1) it will build your skill at calculating and visualizing; and 2) it will build up your repertoire of familiar, well-understood manouevres and tactics. For instance, I had never seen this game or this position before, but I solved it instantly because I'd seen the whole idea several times before. Here's one well-known, particularly elegant example that is well worth your study: Yates vs Reti, 1924

Mar-02-09		martinZH: Thank you Morten, thank you dzechiel. I realley appreciate your comments! To dzechiel: I do play frequently on a correspondance-chess site. However I seem not to improve. I hope my membership on CG and the tools here will help me with that.

Mar-02-09		martinZH: Thank you all very much-

Mar-02-09		zooter: quite a long combination today 26.Qxc8+ Nxc8 27.Rxc8+ Kh7 28.Rh8+ Kxh8 (only move) 29.Nxf7+ K moves 30.Nxd6 Seems a little long combination for a Monday

Mar-02-09		tallinn: To find the decisive move with a search depth of 8 (even if the first 4 half-moves are forced) seems not to be the ordinary Monday level to me. However, cg, go ahead, make things more challenging right up from the start. I spotted the fork-pattern right from the start, however, I took me some moments to get to the Rh8 check for pulling this off. It is probably harder to find that move if one does not start with the idea "with black K on h8 Nxf7 would be curtains".

Mar-02-09		TCS: <David> is clear in stating that 25.Qc3?! is a clear mistake if 25....Rc8 26.Qxc8† is not intended. I also wondered whether 25.Qc3 was a trap move - hoping for 25...Rc8. Actually Qc3 makes a lot of sense because a Queen trade would favour White. I double checked this with Frits and this seems to be the strongest move.

Mar-02-09		Operation Mindcrime: Nice puzzle. I saw the ♕xc8! idea immediately, but it took me some time to see the deflection ♖h8+!!, which forces a knight fork and leaves white a ♘ ahead.

Mar-02-09		whiteshark: long for a Monday, but elementary. Nice ♘₪ though

Mar-02-09		gtgloner: Looks to me like 26. Qxc8+ Nxc8 27. Rxc8+ Kh2 28. Rh8+ Kxh8 29. Nxf7+ and White is a N ahead in the end game. Let's see.

Mar-02-09		gus inn: During all games it is good idea to have in mind when King/officer are on squares which match the knightjump(s).

Mar-02-09		zb2cr: Unusually long for a Monday, but all forced. White ends the combination up by a Knight and 3 Pawns (and the 3 are connected passed Pawns, at that!) after: 26. Qxc8+, Nxc8; 27. Rxc8+, Kh7; 28. Rh8+, Kxh8; 29. Nxf7+, Kg8; 30. Nxd6.

Mar-02-09		hot pawn: Slightly deeper than a normal monday puzzle, but I still got it.

Mar-02-09		CHESSTTCAMPS: 26.qxc8+ ♘xc8 27.♖xc8+ ♔h7 28.♖h8+ ♔xh8 29.♘xf7+ ♔ any 30.♘xd6 This combination to win a piece is essentially forced (unless black chooses to interpose the queen earlier) and an experienced tactician will spot it within a few seconds. Nonetheless, the sequence beautifully combines several essential tactical elements: use of battery to exploit back-rank weakness, diversion (move 28), and fork.

Mar-02-09		geeker: Rather challenging for a Monday. Capturing on c8 twice was pretty obvious, but it took a while to find the R sac on h8 followed by the fork.

Mar-02-09		Patriot: Straightforward with no side variations: 26.Qxc8+ Nxc8 27.Rxc8+ Kh7 28.Rh8+ Kxh8 29.Nxf7+ and 30.Nxd6.

Mar-02-09		johnlspouge: Monday (Very Easy): N Sakr vs Ali Atwi, 2001 (26.?) White to play and win. Material: Up 2P. The Black Kg8 has 3 legal moves. The tactical tension stems from the Black Rc8, protected by Na7, opposing the White battery Rc1 and Qc3. The White Ne5 could fork Qd6 and Kg8, if only Kg8 were at h8. The elements are in place: now, to put them together with a forcing move… Candidates (26.): Qxc8+ 26.Qxc8+ Nxc8 [else, drop a R] 27.Rxc8 Kh7 [interposing Qd6 leaves White at least a N+P up] 28.Rh8+ Kxh8 The R has decoyed the K into position for the fork. 29.Nxf7+ then 30.Nxd6 White is up N+3P.

Mar-02-09		JonathanJ: well this was much deeper than the usual monday puzzle, one had to calculate five(!) moves ahead! on the other hand, everything was absolutely forced, so there were no sidelines to calculate. still, i would rate this as a tuesday.

Mar-02-09		kahen: That combination is totally metal - it has both a magnet and a fork! runs and hides

Mar-02-09		Eduardo Leon: 26. Qxc8+ Nxc8 27. Rxc8+ Kh7 28. Rh8+ Kxh8 29. Nxf7+ and 30 Nxd6 Too easy, even for a Monday.

Mar-02-09		viky: That's took me some time! it's a forced line.. 26 Qxc8+ Nxc8 27 Rxc8+ Kh7 28 Rh8+ Kxh8 (only move) and now the parting blow.. 29 Nxf7+ and White queen falls..

Mar-02-09		viky: Oh.. I meant black queen falls.. 30 ... Nxd6

Mar-02-09		ZUGZWANG67: White' s already 2 pawns up. 26. Qxc8+ is a forced win, as 26. ...Nxc8 27. Rxc8+ Kh7 28.Rh8+ Kxh8 29.Nxf7+ and 30.Nxd6 is +6. Time to check.

Mar-02-09		FSR: <dzechiel> "each of black's moves was forced (the only legal move available to black)." Do you know something about the laws of chess I don't? Why were 26...Qd8??, 26...Qf8??, and 26...Kh7?? illegal?

Mar-02-09		zb2cr: Hi <FSR>, You are right that <dzechiel> misspoke. On the other hand, you yourself are aware that the moves you suggest are clearly fatuous, since you gave each of them a double question mark in your post.

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