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Kjell Hakon Lien vs Kore Ettu
London Chess Classic Open (2014), London ENG, rd 1, Dec-08
Ponziani Opening: General (C44)  ·  1-0

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
Nov-01-16
Premium Chessgames Member
  Phony Benoni: 35.e7+ is the first thing we see, but the queen can be capture.

So first 35.Rxe3 to eliminate the en prisity? 35...fxe5 36.e7+, and since Black must leave the rook to be taken White ends up a piece.

Any extra stuff, like Black's pawn now on e3. Doesn't look like a threat.

Looks effective, but I have the nagging feeling I've missed something.

Nov-01-16  patzer2: For today's Tuesday solution, we have another easy transition to a simple won endgame involving an exchange sacrifice and a pawn promotion with 35. Rxe3 fxe3 36. e7+ .

For a Black improvement, I'd start with the opening and replace 4...dxe4 5. Nxe5 with the popular move 4...f6 = as in the drawn game I Nepomniachtchi vs Karjakin, 2012 or the Black win Morozevich vs F Vallejo Pons, 2014.

Nov-01-16  Cheapo by the Dozen: The only thing preventing discovered check with e7 is the e3 knight. So 35 Rxe3 snatches a piece, since if Black recaptures the discovered check is back on. The things to check are:

Is Black's e3 pawn enough of a threat to compensate? (It isn't.)

Does interposing the rook at f7 save it? (Queening at e8 is a devastating response.)

And finally, does 35 ... Rd8 happen to work? Well, after

35 Rxe3 Rd8
36 e7+ Rxd5
37 e8(Q)+

White is up a knight and will have time to consolidate.

Nov-01-16  lost in space: 35. Rxe3 36. e7+ and thats it
Nov-01-16  saturn2: White wins a piece by RxN.
Nov-01-16  YouRang: Tuesday 35.?


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Well, the threat of e7+ is hanging right there in our faces, isn't it?

But we can't play it just yet since black's Ne3 is attacking our queen. So eliminate that knight with <35.Rxe3>


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This provides black with the proverbial "opportunity to resign", since the choice is to either drop the knight or allow e7+.

Black declined with <35...fxe3?>. (This gets a question mark only because anything other resigning gets a question mark). But it does at least provide the obvious threat to materialize on the board: <36.e7+>


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With 36...Qf7 37.exf8Q+ Kxf8 38.Qd8+ , white easily simplifies down to K+N+5P vs K+5P ending .

Nov-01-16
Premium Chessgames Member
  Jimfromprovidence: Side puzzle after 35 Rxe3 Rd8 36 Nxf4! Rxd5.


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White to play and win.

Nov-01-16
Premium Chessgames Member
  perfidious: <Et tu, Kore?>
Nov-01-16  AlicesKnight: 35.Rxe3 fxe3; 36.e7+ seems to be winning, gaining the R leaving White a piece up. If 36...Kh1/2 the RP goes with check (White must ensure Qe5/4 at some point to avoid Black pawn threats backed by a surviving Q), if 36...Qf2 then exf8=Q and all three queens go leaving White with the extra N and if 36...Rf2 then White queens for free. Let's see - yes, Black also thinks there is no way out.
Nov-01-16  morfishine: <35.Rxe3> followed by the exposed check <36.e7+> and thats that

*****

Nov-01-16
Premium Chessgames Member
  agb2002: White has an extra pawn.

Black threatens Nxd5 and Re8.

White can create a double threat (e7+ and Re5) while eliminating Black's Nxd5 with 35.Rxe3:

A) 35... fxe3 36.e7+

A.1) 36... Kh8 37.exf8=Q+ Qxf8 38.Qxh5+ Kg8 39.Ng5

A.1.a) 39... Qa3(c5,d6) 40.Qe8+ Qf8 41.Qe6+ Kh8 42.Qh3+ Kg8 43.Qh7#.

A.1.b) 39... Qa8(b8,c8) 40.Qh7+ Kf8 41.Qh8+ wins the queen.

A.1.c) 39... Qd8 40.Qh7+ Kf8 41.Qh8+ Ke7 42.Qxg7+ Kd6 (42... Ke8 43.Qf7#) 43.Nf7+ wins the queen.

A.1.d) 39... Qe7 40.Qh7+ Kf8 41.Qh8#.

A.2) 36... Kh7 37.exf8

A.2.a) 37... Qxf8 38.Qxh5+ transposes to A.1.

A.2.b) 37... e2 38.Qxh5+ Qh6 39.Ng5#.

A.3) 36... Qf7 37.Qxf7+ Kxf7 38.exf8=Q+ Kxf8 39.Kf1 + - [N].

A.4) 36... Rf7 37.e8=Q(R)+ Kh7 38.Qxh5+ Qh6 39.Ng5#.

B) 35... Re8 36.e7+ wins decisive material. For example, 36... Qf7 37.Re6 Rxe7 38.Qd8+, etc.

Nov-01-16
Premium Chessgames Member
  agb2002: <Jimfromprovidence: Side puzzle after 35 Rxe3 Rd8 36 Nxf4! Rxd5.>

I didn't consider 35... Rd8 due to 36.e7+ Rxd5 37.e8=Q+ when White emerges a knight up but should have included (I did with a number of funny lines!).

However, 36.Nxf4 Rxd5 37.Nxd5 Qg5 (37... Qd8 38.e7 Qe8 39.Nc7 + -) 38.e7 Qxe3+ 39.Nxe3 Kf7 40.Nd5, again a knight ahead, is technically much better because Black doesn't have a rook and therefore a chance to reach a R+N vs R ending.

Nov-01-16  leRevenant: <Phony Benoni: ... Looks effective, but I have the nagging feeling I've missed something.> ?nagging feeling caused perhaps merely by time's wingèd chariot?
Nov-01-16  zb2cr: 35. Rxe3 makes the the possibility of a discovered check by e7+ into a real live possibility, and thus wins material.
Nov-01-16  matvox: 'Lien on me' ?
Nov-01-16  schachfuchs: What should white play after 10.Qf3 Qe6+ (instead of 0-0)?
Nov-01-16  YouRang: <schachfuchs: What should white play after 10.Qf3 Qe6+ (instead of 0-0)?>

11.Kd1!

Nov-01-16
Premium Chessgames Member
  Jimfromprovidence: <agb2002> <I didn't consider 35... Rd8 due to 36.e7+ Rxd5 37.e8=Q+ when White emerges a knight up but should have included (I did with a number of funny lines!).

However, 36.Nxf4 Rxd5 37.Nxd5 Qg5 (37... Qd8 38.e7 Qe8 39.Nc7 + -) 38.e7 Qxe3+ 39.Nxe3 Kf7 40.Nd5, again a knight ahead, is technically much better because Black doesn't have a rook and therefore a chance to reach a R+N vs R ending.>

Beside being a knight and two pawns down, now after 40 Nd5 black's king is locked down to prevent the pawn promotion.


click for larger view

Nov-01-16  psmith: <patzer2>
A fun line is 4...Nf6 5. Nxe5 Bd6. Black tends to get a good deal of compensation.
Nov-01-16  RandomVisitor: After 17.Re1 black had 17...Rf5! for an advantage.

Also, after 15...Bxf4 16.Qxf4, 16...Re6 equalizes:


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Komodo-10.1-64bit:

+0.10/40 16...Re6 17.a3 Rbe8 18.Ra2 Nf6 19.Qf5 g6 20.Qf3 Qd5 21.Qxd5 cxd5 22.c4 Re4 23.Rc2 Rxd4 24.cxd5 Nxd5 25.g3 Rd3 26.Rfc1 Kg7 27.Kf1 Rd8 28.Rc5 Rd6 29.Kg2 Rb3 30.Ra5 a6 31.Rac5 Rd7 32.h3 Rd6 33.Nc3 c6 34.Ne4 Re6 35.Ng5 Re2 36.Rxc6 Rxa3 37.Rd1 Rc3 38.Rc5

Nov-02-16
Premium Chessgames Member
  kevin86: White forces a queen!

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