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Eric Hansen vs Jeffery Xiong
Tata Steel Challengers (2017), Wijk aan Zee NED, rd 6, Jan-20
Alekhine Defense: Modern. Alburt Variation (B04)  ·  1-0



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sac: 38.Rxd5 PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
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Premium Chessgames Member
  al wazir: I saw pretty much everything except that after 40. Rxc5, black really has no other move than 40...Qe7.

After 42...Kh8 white is up ♗+♘+♙ vs. ♖, but as black I would have played on a few more moves.

Premium Chessgames Member
  al wazir: <Mayankk: I diverged with 40 Rf5 instead of 40 Rc5 from the game. Don’t think it really matters.> It matters. By taking the ♘ on f5 first, white forgoes any chance of getting the ♗ on c5.
May-31-18  landshark: I also took 40. Rxf5 and was surprised by the game move 40. Rxc5 - and disappointed I missed it. Problem I'm having with 40. Rxf5 is .... Qd7. Now 41. Rxf7 Rxf7 looks forced and White has to do something about his f4 bishop. The logical 42. Be3 Bxe3 43. fxe3 Kg7 leaves White with 2 minors + a pawn against a very active R and I'm not thrilled with where I've landed -
Premium Chessgames Member
  ChessHigherCat: It's an easy win for white either way:

1) +6.97 (27 ply) 40.Rxc5 Qe7 41.Rxf5 gxf4 42.Bd5 fxg3 43.Bxf7+ Kg7 44.fxg3 Rxf7

2) +6.19 (27 ply) 40.Rxf5 Qd7 41.Bh3 gxf4 42.Rg5+ hxg5 43.Bxd7 Kh8 44.Be6 Rf6 45.g4 Rd8 46.Nd4 Rd6 47.Bd5 Bxd4

May-31-18  malt: Me thinks its
38.R:d5 ed5 39.R:d5 Kg7 40.R:f5
as the Black King and Queen are caught in a crossfire.
Premium Chessgames Member
  agb2002: White has the bishop pair for a bishop and a knight.

Black threatens gxf4.

The white queen x-rays the black king and the bishop on g2 does the same with the black queen. These details suggest 38.Rxd5:

A) 38... exd5 39.Rxd5

A.1) 39... Kh7 40.Rxf5

A.1.a) 40... Qc8 41.Rxf8 Qxf8 42.Be4+ Kh8 (42... Kg7 43.Be5+ Qf6 44.Bxf6+ wins) 43.Be5+ Rg7 44.Bxg7+ Kxg7 45.Qc2 (due to Qxf2+ and mate next) + - [N+P].

A.1.b) 40... Rxf5 42.Bxb7 gxf4 (42... Rxb7 43.Be3 + - [Q+N+P vs 2r]) 43.Bc8 fxg3 44.Bxd7 gxf3+ 45.Kf1 Rg5 46.Nd4 wins.

A.1.c) 40... Qxg2+ 41.Kxg2 Rxf5 42.Be3 + - [Q+N+P vs 2r].

A.2) 39... Kh8 40.Rxf5 looks similar to A.1.

A.3) 39... Rxd5 40.Bxd5+ wins decisive material.

A.4) 39... Bxf2+ 40.Kxf2 only seems to achieve the loss of the bishop.

B) 38... Rxd5 39.Rxd5

B.1) 39... exd5 40.Bxd5+ as in A.3.

B.2) 39... gxf4 40.Rxf5 as above.

C) 38... gxf4 39.Rxd7 wins.

May-31-18  saturn2: I saw white wins a piece after 38 RxNd5 exR 39 Rxd5 because black has to bring the either queen or king to a safe place and 40 RxB follows.

38..RxR does not change much

May-31-18  cocker: Instructive (for some of us) that Bxd5 would be wrong on move 38 or 39.
May-31-18  Walter Glattke: Just going on this site, seeing a 4times attacked and 3 times guarded knight, what would one do then?
May-31-18  Walter Glattke: Only a knight ahead with my BLITZ analysis 38.Rxd5 Bxf2+ 39.Kxf2 Ne3 40.Kxe3 gxf4+ 41.gxf4 ed5 42.Bxd5+ Rd5 43.Rxd5 46.Qxd5+ Qxd5 47.Rxd5 - if correct, then less bad than 38.-exd5.
May-31-18  Whitehat1963: I’ll take credit for seeing the double-took sac.
Premium Chessgames Member
  Richard Taylor: I looked at it for about 4 minutes, saw Rxd5 looked at a few moves but it just looked too winning. It had to be the move.

(After having just lost about 5 blitz games in a row!)

Interesting game.

Premium Chessgames Member
  takchess: Like Whitehat1963 I can take credit for the two Rooks.thought this was going to be more of a king chase. This might be fun to play on an analysis board.
May-31-18  Walter Glattke: Ah, discovered check with 38.Rxd5 Bxf2+ 40.Kxf2 Ne3 41.Rxg5+! that's the end.
May-31-18  mel gibson: I knew that either the Bishop or Rook should take the black Knight.

Stockfish 9 says:

38. Rxd5

(38. Rxd5
(♖d3xd5 ♖d7xd5 ♖d1xd5 ♗c5xf2+ ♔g1xf2 ♕b7-e7 ♖d5xf5 ♖f8xf5 ♘b5-d4 ♖f5-f6 ♘d4xe6 g5xf4 ♘e6xf4+ ♔g8-f8 ♗g2-f3 ♕e7-d6 ♕b3-c2 ♖f6xf4 g3xf4 ♕d6xf4 ♕c2-g6 ♕f4-d2+ ♔f2-g3 ♕d2-e3 ♕g6-f6+ ♔f8-e8 ♔g3-g4 ♔e8-d7 ♔g4-h5 ♔d7-c8 ♕f6-c6+ ♔c8-d8 ♕c6-d6+ ♔d8-c8 ♕d6-d5 ♕e3-c5 ♔h5xh6 ♕c5xd5 ♗f3xd5 ♔c8-c7 ♗d5-f3 ♔c7-d6 ♔h6-g5 ♔d6-c5 ♗f3-e2 ♔c5-d6 ♔g5-f5 ♔d6-d5 ♔f5-f4 ♔d5-d6 ♔f4-e4) +5.25/34 80)

score for White +5.25 depth 34.

May-31-18  Pasker: Saw 38.Rxd5 instantly but took some time to look for a better move because its Thursday. After a while I realized there is nothing better than that. White's bishop on g2 and Black's Queen on b7 make this move almost an obvious continuation. In other words black made a huge blunder by ignoring the dangerous b7-g2 diagonal. If black captures the second rook he will lose the queen. It was a lot easier compared to yesterday's.
Premium Chessgames Member
  Penguincw: Yay, here's to an easier than average week. (I bet that means next week will be very hard)

So way to end the month. I saw the potential fork on d5, and got up to 39.Rxd5.

May-31-18  Marmot PFL: <Yay, here's to an easier than average week. (I bet that means next week will be very hard)>

It could mean that tomorrow will be.

May-31-18  landshark: <CHC: It's an easy win for white either way> This is reassuring. Perhaps I'll award myself the full point after all. I might have seen 41. Bh3 in my line had it been morning -
May-31-18  landshark: But this does highlight the difference between what's easy for a computer vs what's easy for a shark.
Premium Chessgames Member
  ChessHigherCat: <landshark: But this does highlight the difference between what's easy for a computer vs what's easy for a sharks?>

Sharks are generally far more adept at hunting down tuna according to Bill Gates, who threw over 100 waterproofed PCs overboard and shouted "Go fetch me some tuna boys!", with no results whatsoever except a fine from the local coast guard.

Premium Chessgames Member
  Bubo bubo: The first move seems to be clear: the knight on d5 is attacked four times, but defendes only thrice. Hence 38.Rxd5, setting up a discovered attack against the black queen.

A) Black has to recapture, since otherwise White wins another piece thanks to that discovered attack, for a net gain of one piece even if Black wins the Bf4.

B) 38...exd5 39.Rxd3 gives White a second diagonal discovered attack, again winning at least one piece.

C) 38...Rxd5 looks better: White renews his threat with 39.Rxd5, and Black must not recapture because of the fork Bxd5+. But after 39...Qc8 White has two of his pieces under attack, and it seems to me as if he has nothing better than 40.Rxc5, winning two minor pieces for the rook.

May-31-18  Patriot: <<ChessHigherCat>: I just wanted to clarify that I'm not calling you guys "dorks in shorts". In fact, I'm sure most of you are wearing long pants or pyjamas now :D> I'm heading to the nearest safe space. lol. Hey we are all dorks here. I mean we are on a Chess forum! :-)
Mar-10-19  whiteshark: How to survive a Sharknado and other unnatural disasters...
Premium Chessgames Member
  perfidious: In Soviet days, that Rook would have been called a wrecker, and with infinitely more reason than a great many who were styled thus by the authorities of the time....
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