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Zeng Chongsheng vs Nguyen Huynh Minh Huy
3rd HD Bank Cup (2013), Ho Chi Minh City VIE, rd 6, Mar-22
Slav Defense: General (D10)  ·  1-0

ANALYSIS [x]

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Kibitzer's Corner
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Oct-19-20
Premium Chessgames Member
  Predrag3141: At first I thought the solution to the puzzle was 25 Qxd7, winning two pieces. Surprisingly though, it only wins back the one piece White is down, due to the weakness of White's back rank. And 25 Bxh7+ wins a whole queen.
Oct-19-20  saturn2: White is down a piece but wins the queen

25. Bxh7+ Kh8 (Nxh7, 26 Qxd7) 26. Bf5+ Kg8 

Oct-19-20  Cheapo by the Dozen: Tuesdayish difficulty for me even though the solution is actually Monday-simple. Why? Because I spent 10s of seconds looking for a mating line before I switched gears to the actual winning line. Even then, rather than starting with the obvious Monday sac, my path to solution was:

Bf5 is a skewer ...
... and it doesn't work at all.
How can we improve it?

Oct-19-20
Premium Chessgames Member
  al wazir: I think that after 24...Nde4 black could have survived a while longer:

25. Nxf8 (25. f3 Qxd7 26. Qxd7 Nxd7 27. Bxe4 Nf6 28. Bxd5 Nxd5 29. Rxd5) Qxf8 26. Bxe4 dxe4).

White has ♖ vs. ♘+♙.

Oct-19-20
Premium Chessgames Member
  An Englishman: Good Evening: 24...White to Play appears an even better puzzle, suitable for Wednesday or Thursday.
Oct-19-20  Brenin: <al wazir>: If 24 ... Nfe4 25 Nxf8 Qxf8 then 26 Bxd6 Bxd6 27 Bxe4 dxe4 28 Rxd6 wins a piece, since 28 ... Qxd6 allows 29 Qxc8+.
Oct-19-20  stacase: After checking out if there was a Queen sacrifice or not (it was not) then it took a few seconds to see that Black's Knight was asked to protect two important squares which 25.Bxh7+ exploited nicely. Pretty good Monday puzzle (-:
Oct-19-20  saturn2: <Brenin: <al wazir>: If 24 ... Nfe4 25 Nxf8 Qxf8 > 25...Kxf8 seems better. White gets the pawn h7 though
Oct-19-20  goodevans: <An Englishman> I was thinking the same thing, but I guess it's hard to find Monday puzzles that aren't repetitive. Best Monday puzzle for a while (at least a week!).
Oct-19-20
Premium Chessgames Member
  Oxspawn: Stretched me for a while before I found 24. Bxh7+ - which means it is pitched about right for a Monday. I am a Monday kind of a player - Tuesday on a good day. Then the week just slips away.
Oct-19-20  Tomate: There are two candidate moves 1.Bxh7+ and 1.Qxd7. At first glance it seems that 1.Bxh7+ wins a Queen for two minor pieces, although 1.Qxd7 wins a piece. So it requires a closer look, because 2 minor pieces can offer a sttuborn defense against a Q.

Indeed after 1.Bxh7+ Nxh7 2.Qxd7 white wins again Be7, so it remains with a Queen for a piece, which is an easy win. In an other hand after 1.Qxd7? Nxd7 2.Rxe7 Nc5! White does not win a piece, since 3.Bxd6 Nxd3 4.Rxd3 Black play 4...Rc1+ and white is mated.

So after a second look the choice 1.Bxh7+ is obvious.

Oct-19-20  Walter Glattke: Hier from Germany a Nulldiät with Tomate: 24.-Nde4 25.Bxe4 Nxe4 26.Rxd5 or 25.-dxe4 26.Nxf6+ Bxf6 27.Rxd8 Rfxd8 or 25.-Qxd7 26.Bxh7+ nice Monday this week!
Oct-19-20  TheaN: <25.Bxh7+ Nxh7 (Kh8 26.Bf5+ +-) 26.Qxd7 +-> Unusual Monday. We're winning the queen rather than giving her away. Which is good for a change.
Oct-19-20  zb2cr: 25. Bxh7+ wins the Black Queen, as the Black Knight on f6 is overworked.
Oct-19-20  Damenlaeuferbauer: After long thinking, my old Chinese friend Chongsheng finally found the win of the black queen with 25.Bxh7+!,Kh8 (25.-,Nxh7 26.Qxd7 +-) 26.Bf5+,Kg8 27.Bxd7 +-. This is exactly the way how to play the Exchange Slav with the white pieces!
Oct-19-20
Premium Chessgames Member
  gawain: After 25 Bxh7+ Nxh7 Black's queen is, shockingly, unprotected. But black also loses to a discovered check if he refuses the knight with 25...Kh8.
Oct-19-20  Shrinarayanan: I think it is a better puzzle with White to move on move 24.
Oct-19-20  stacase: <TheaN: <25.Bxh7+ Nxh7 (Kh8 26.Bf5+ +-) 26.Qxd7 +-> Unusual Monday. We're winning the queen rather than giving her away. Which is good for a change.>

Ha ha ha ha ha ha ha ha! Good one (-:

Oct-19-20
Premium Chessgames Member
  Jimfromprovidence: <Predrag3141> <At first I thought the solution to the puzzle was 25 Qxd7, winning two pieces. Surprisingly though, it only wins back the one piece White is down, due to the weakness of White's back rank>

I did the same thing. After 25 Qxd7 Nxd7 26 Rxe7 Nc5 27 Bxd6 Nxd3 it's just even.


click for larger view

Oct-19-20  morfishine: Almost like a Monday
Oct-19-20
Premium Chessgames Member
  al wazir: <Brenin: If 24 ... Nfe4 25 Nxf8 Qxf8 then...>.

Did you look at 24...Nde4 (my suggestion)?

Oct-19-20  Brenin: Thanks, <al wazir>, I misread your posting and looked at 24 ... Nfe4. After 24 ... Nde4 White has 25 Bxe4 Nxe4 (25 ... dxe4 26 Nxf6+, 25 ... Qxd7 26 Bxh7+, or 25 ... Nxd7 26 Qxh7 mate) 26 Rxd5, leaving Black with R and N en prise, and facing 27 Nf6+.
Oct-19-20  TheaN: I hadn't seriously looked at 25.Qxd7, because one, I felt there had to be something more flashy and two, it didn't feel right from the get go, even though the Black pieces are weak.

25....Nxd7 26.Rxe7 Nc5!, White's best is here 27.Bf1 to keep tabs on the knight and keep initiative. After 27.Bxd7 Nxd3= Black is already even, but it goes even further tactically; after 28.Rxa7? (b3=) White may threaten Bxf8, but a capture chain leaves Black up all the time, 28....Nxb2! ⩱ is playable, 29.Bxf8 Nxd1, and the knight's still immune after say 29.Rb1 Rfe8 ⩱.

Interesting side line.

Oct-21-20  TheBish: Really instructive game. Just as soon as White has every piece developed to its ultimate attacking square, the hammer blows start with 22. d5!. 25. Bxh7+ is easy to spot, but 24. Nd7! would make for a more challenging tactical exercise (POTD).
Oct-21-20
Premium Chessgames Member
  al wazir: <Brenin: After 24 ... Nde4 White has 25 Bxe4> My answer would have been 25...Qxd7. But after 26. Bxh7+ Kh8 27. Qxd7 Nxd7 28. Rxe7, white is a piece up.

Thanks.

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