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Lexy Ortega vs Pierangelo Trotto
Arvier op (2004), rd 4, Jan-04
Semi-Slav Defense: Main Lines (D45)  ·  1-0



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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Aug-13-14  Nick46: <Once: Several alternatives today. With Fritzie's help, I'll try to pick through the wreckage of black's position... To start with, he reckons that 20. Bh7+ and 20. Rd8+ are as near as damnit identical. > Good on ya Fritzie!
Aug-13-14  HaydenB: This is a thematic attack found in most good books on tactics; set up of course by the Bishop sac on h6, then targeting the focal point h7, a la Vukovic etc...
Aug-13-14  morfishine: 20.Bh7+ Nxh7 (20...Kh8 really isn't an option
due to 21.Bg6+ Kg8 22.Bxf7+)

21.Qxh7+ Kf8 22.Rd8+

When a variety of move-orders and outright different lines all win, its a sign of force concentrated against multiple weak points


Aug-13-14  gofer: This is one where I think thought may be a slick finish, but could only see the "hard grind", but then thought I had found the slick finish, but it turned out to still be a "hard grind" after all!

<20 Bh7+ ...>

20 ... Nxh7
21 Rd8+ ...

21 ... Nf8/Qf8
22 Qh7#/Qxh7#

21 ... Qe8?
22 Rxe8 Nf8
23 Rxf8#/Qxf8#

21 ... Qxd8
22 Qxh7+ Kf8
23 Qxf7#

<20 ... Kh8>
<21 Rd8+! ...>

21 ... Qxd8/Qe8/Qf8 22 Nxf7#
21 ... Ng8 22 Rxg8#

<21 ... Ne8>
<22 Bg6+ Kg8>
<23 Bxf7+ Qxf7>
<24 Nxf7 ...>

click for larger view

White has a number of simple threats; Nxe5, Rxe8+ and Qg6+

<24 ... Kxf7>
<25 Qh5+ ...>

Black is in real trouble, time to resign. No quick kill, but certain death...

Aug-13-14  zb2cr: 20 Bh7+ jumped out at me, and all else followed.
Aug-13-14  goodevans: I spent quite a while trying to decide whether <20.Bh7+> or <20.Rd8+> was the "right" answer. Turns out that either does the trick!
Premium Chessgames Member
  Penguincw: So close! I was thinking of 2 variations. The first was 20.Bh7+ Nxh7 21.Qxh7+ Kf8, but there is no mate. The other variation was 20.Rd8+ Qxd8 21.Qh8+ Kxh8 22.Nxf7, but that is even worse, as white is now down a further rook.
Premium Chessgames Member
  whiteshark: <20.Bh7+ Nxh7 21.Qxh7+ Kf8 22.Rd8+> and that's it.
Premium Chessgames Member
  gawain: Although I solved this one pretty quickly once I noticed that White had a rook waiting on d1, I did not think it was all that easy!
Premium Chessgames Member
  doubledrooks: Count me in with the 20. Rd8+ group.
Premium Chessgames Member
  kevin86: Today, I was looking for forks... Instead I go a mating combination. After the black pieces are decoyed, the queen mates in 2 at H7, then f7.
Aug-13-14  Marmot PFL: 20. Bh7 Nh7 is easy to see leads to mate, there is also 20...Kh8 21.Rd8+ Ne8 (Qxe8 22.Nxf7#) 22.Nxf7+ Qxf7 23.Bg6+ winning the queen.

If not for Bc8 blocking the Ra8 the combination would fail, of course white would still be 2 pawns ahead.

Aug-13-14  David2009: Pleasant Wednesday POTD. At move 19 Black is a piece up but desperately needs to develop: after 19...Be5 the various variations culminating in Rd8+ diverting the BQ from f7 were not hard to spot. Tougher was 19...Bd7 20.Bh7+ Kh8 21.Bg6+ Kg8 22.Bxf7+ Qxf7 23.Nxf7

click for larger view

when Black will play 23...Kxf7.

This position is no doubt lost for Black against best play but Black has defensive resources. It is a great pity that Crafty End Game Trainer is no longer available: however one can try to win the position as White against Little Chess Partner. Clicking on the diagram reveals the FEN with Black to move, which should be inout into LCP. Unfortunately the LCP suggests moves for both sides.

Aug-13-14  standardwisdom: Is black already lost after 17. Qxh6

I cannot think of any move at that point that saves black. What does silicon say?

Premium Chessgames Member
  Once: <standardwisdom> I'll ask Fritzie to ponder on it and get back to you.

After a couple of minutes, he is muttering into his beard about +2 to white. That's generally enough to win, although not yet a foregone conclusion.

His current favourite line is to give back black's extra piece in return for shoring up the kingside. 17...Ne4! 18. Bxe4 f5. Then his eval of 2 pawns for white suggests that he isn't seeing the attack crashing through, so white is up by the two extra pawns but nothing else.

I'll leave him working for a while and see if he says anything different.

Aug-13-14  Refused: Mainline:

20.Bxh7+ Nxh7 21.Qxh7+ Kf8 22.Rd8+ Qxd8 23.Qxf7#

20...Kh8 21.Bg6+ Kg8 22.Rd8+ Ne8 23.Bxf7+ Qxf7 24.Nxf7

Aug-13-14  rickycota: 20. Rd8+ also wins but what happens if 20...Ne8?
Aug-13-14  BOSTER: <HaydenB :This is a thematic attack found in most good books.> So, do you think that Trotto, playing black in this game,didn't read them? No any book is able to teach the game, you need something else. Watching the game.
Move 10...h6-this is the mistake, black created the target for attack. 10...Nf6 is better -with tempo. Move 12...c5-this is not a good idea to open the game when you behind in development.

After 15.Qh4 autopilot is "on", the destination is the "mating land".

"Don't always keep the a8 Rook and the c8 Bishop passive!" Bronstein.

Premium Chessgames Member
  Sally Simpson: Hi Boster,

"So, do you think that Trotto, playing black in this game,didn't read them?"

Maybe the lad has not read them. He appeared again as the loser in a recent POTD and he seemed unfamiliar with the Morphy at Opera game.

N Pegoraro vs P Trotto, 2004

The lad has only two games on here and both are instructive losses.

There but for the grace of God......

Aug-13-14  Refused: < rickycota: 20. Rd8+ also wins but what happens if 20...Ne8?>

Transposes into the sidelin I gave.

21.Bxh7+ Kh8 22.Bg6+ Kg8 23.Bxf7+ etc.

Premium Chessgames Member
  Once: <standardwisdom> 4 hours in and Fritzie is saying +2.37 for 17...Ne4 18. Bxe4 f5

click for larger view

This seems to defuse the immediate white attack. After the white bishop retreats, black can play Qf6 and his kingside is not in immediate danger.

White should then win with his two extra pawns in the endgame.

Premium Chessgames Member
  PawnSac: On vacation in Orlando.
Kid's gonna see Mickey Mouse tomorrow, but i just HAD to log in and solve a quick one. The move order is the only clever part.

Bh7+ Nxh7
Rd8+ Qxd8
Qxh7+ Kf8

Premium Chessgames Member
  WannaBe: Time to take out a second mortgage on the house. =)
Aug-13-14  TheBish: L Ortega vs P Trotto, 2004

White to play (20.?) "Medium/Easy", Black is up a piece for two pawns.

It looks like there is more than one road to Rome here. I have both 20. Bh7+ and 20. Rd8+ winning, so we'll look at both in turn.

20. Bh7+! and now:

A) 20...Nxh7 21. Qxh7+ Kf8 22. Rd8+ Qxd8 23. Qxf7#. Earlier White could play 21. Rd8+ first since 21...Nf8 22. Qh7 is mate.

B) 20...Kh8 21. Bg6+ Kg8 and now 22. Bxf7+ would win the queen, but much better first is 22. Rd8+! Ne8 23. Bxf7+ Qxf7 24. Nxf7 Kxf7 25. Qh5+ and White cleans up.

Now for the other key move:

20. Rd8+! and now:

a) 20...Qxd8 21. Bh7+ Kh8 (or 21...Nxh7 22. Qxh7+ Kf8 23. Qxf7#) 22. Nxf7#.

b) 20...Ne8 21. Bh7+ Kh8 22. Bg6+ transposes into line (B) above.

So, either 20. Rd8+ or 20. Bh7+ works.

Aug-13-14  TheTamale: If 20)... Kh8, then 21) Rd8+. If queen takes, then 22) Rxf7 mate. Or if 21) ...Ng8, then 22) Rxg8 mate. Right?
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