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Victor Kahn vs Rafael Blanco Estera
Buenos Aires ol (Men) fin-A (1939), Buenos Aires ARG, rd 12, Sep-14
Dutch Defense: Classical Variation (A84)  ·  0-1

ANALYSIS [x]

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sac: 14...Rxh3 PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 5 OF 5 ·  Later Kibitzing>
Dec-31-11
Premium Chessgames Member
  Gilmoy: <Once: 16...Ng4 is tempting ... but how do we deal with 17.Bf4> or 17.Rf2, which messed me up.

<16...Qg3+ ... Aha - now Bf4> and Rf2 don't <work because we can simply take> (one of) them <off.> Heh. New deep-principle: If your opponent has two confounds, <fork them>!!

Dec-31-11
Premium Chessgames Member
  Gilmoy: <sevenseaman: ... a 'perfect decoy'.> I Grek ot, I mean I grok it! A paltry OTB example is on my page. As befits this holiday season: 'tis more blessed!
Dec-31-11  asiduodiego: Nice problem for a Saturday, but I found it easier than yesterday. I didn't get the whole combination, but after 14 ..., Rxh3!! with the bishop in the long diagonal and the knight on e5 ready to get into the struggle, it looks hopeless for white after the pawns are gone.
Dec-31-11  sevenseaman: <Once> and <Gilmoy>. Nice. A simple puzzle but since x-mate is not specified some geese fall for bxc3. I barely checked in the nick of time.

<Gilmoy> Went to your page. A full house there, very magnetic!

Dec-31-11
Premium Chessgames Member
  Penguincw: < VERY DIFFICULT >

Umm. Not really.

Dec-31-11
Premium Chessgames Member
  sethoflagos: The immediate mating threat on h1 makes this almost a single forced line continuation:

14...Rxh3 15.gxh3 Qxh3 16.Qd5+

(better than 16.f3 Qg3+ 17.Kh1 Ng4 18.Bf4 Qxf4 19.Rf2 Nxf2+ with overwhelming material advantage; or 16.Bf3 Nxf3+ 17.Qxf3 Bxf3 with Qg2# to follow)

16...Bxd5 17.cxd5 leaving


click for larger view

Although black is only marginally ahead in material, he is way ahead positionally and has a wide range of options against white's under-developed forces.

One continuation may be:

17...Nb4 18.Bf4 Nf3+ 19.Bxf3 Qxf3 20.Bg3 Nxd5 21.Nd2 Qf7 22.Nc4 Re8 23.Ne5 Qxe7 24.Rad1 Nf6 25.Rd3 d6 26.Nf3 Qf7 27.Rb3 Qd5 28.Rb1 c5 29.Kg2 Re2 30.Kf1 Ne4 31.Kxe2 Nxg3+ 32.fxg3 Qe4+


click for larger view

Must be getting towards resignation territory

Dec-31-11
Premium Chessgames Member
  paulalbert: Two days in a row, Rxh3. Thought this was easier than yesterday since, other than a meaningless diversion e8Q+, gxh3 forced. Then you have to see the Ng4 idea (after Qg3ch to drive K to h1) to threaten mate on h2 (or fork on f2) rather than mate on h1 once f3 blocks the bishop. I admit I did not see the temporary Bf4 diversion.

At least today nothing like Qf1 defense yesterday to muddy the waters.

Dec-31-11  tivrfoa: I saw it and I'm hangover. =)
Probably I had saw this game before.
Dec-31-11  CHESSTTCAMPS: White has B+P for a knight, but has no queen-side development, apparently having lost way too much time in the opening. Black has a clearly winning attack with so much force directed at the castled king (especially the Bb7), facing no active defenders except for the Be2. Black has a very clear and easy win by making a direct mate threat.

14... Rxh3 15.gxh3 (e8=Q+ Rxe8 or 15.Qd5+ Bxd5 only delay things by one move; anything else allows 15... Rh1#) Qxh3 16.f3 (Qd5+ Bxd5 17.cxd5 Re8 with material advantage and an unsheltered white king) Qg3+! (key interpolation) 17.Kh1 Ng4 18.Bf4 (Rf2 Qxf2+ 19.Kh1 Qh2#) Qxf4 19.Rf2 (otherwise 19.Qh2#) Nxf2+ wins.

Much less challenging than yesterday, where each of several lines against best defense required much more time.

Dec-31-11  lost in space: <<Once:> Surprisingly easy for a Saturday.>
Dec-31-11  scormus: I cant helping thinking 13 .... B to move would have been a rather cool puzzle ...
Dec-31-11
Premium Chessgames Member
  WannaBe: <<<ANNOUNCEMENT>>> The Annual Caissar Award will commence soon. This is a long CG.com tradition that was started in 2004 by <Nikolaas>. As usual, we will have our regular 11 categories, ranging from serious to the silly, possibly absurd.

<Best Avatar - Non James Cameron Category>, <Best Profile>, <Best Game Collection>, <Best Historian>, <Best Username/Handle>, <Best Written Post>, <Funniest Kibitzer>, <Most Constructive>, <Best Informed>, <Most Helpful>, <Best Analysis - Non Silicon/Computer Category>

So, please take a moment this weekend, while you are passed out (or recovering) from champaign, to consider who should deserve a nomination.

Who have written some of the most thoughful posts, which member have helped (you) out the most when you posed that 'What happens if 25...Rxd4'?

Who have been most constructive in helping/improving CG.com's community, recommending new feature(s) to the admins.

Dec-31-11  James D Flynn: Very difficult? I took one look at this position and it seemed to play itself. The obvious 14...Rxh3 threatens mate on h1 so the rook must be taken,15.g2xh3 Qxh3 16.f3 (the only move) Qg3ch 17.Kh1 after about 5 seconds the obvious Ng4 came to mind and the mate on h2 cannot be stopped except by saccing both bishop and rook 17....Ng4 18.Bf4 Qxf4 19.Rf2 Nxf2ch 20.Kg2 and I don't see a quick mate so Nxd1 is good enough.
Dec-31-11
Premium Chessgames Member
  agb2002: Black has a bishop and a knight for the bishop pair and a pawn.

The obvious maneuver is 14... Rxh3 15.gxh3 Qxh3:

A) 16.f3 Qg3+ 17.Kh1 Ng4 Black wins.

B) 16.Qd5+ Bxd5 17.cxd5 Nb4 18.Nc3 Nc2 19.Rb1 Nd4 20.f3 Nxe2+ 21.Nxe2 Nxf3+ 22.Kf2 Ne5 - + [Q+2P vs R+B].

Dec-31-11  Patriot: Time spent: 6 minutes

14...Rxh3 is an obvious candidate, which took no time to consider as it threatens mate in 1.

15.gxh3 Qxh3 threatening mate in 1 again.

16.f3 looks like the only decent consideration. If black were seriously down on time, 16.Qd5+ may be best. Otherwise, it's just lost as black wins a queen and two pawns for a rook and bishop.

16...Qg3+ 17.Kh1 Here I really wanted to play 16...Ng4 threatening mate again but 17.Bf4 spoils it. So 16...Qg3+ makes a lot of sense.

17...Ng4 18.Bf4 Qxf4 Now 19.Rf2 is met with 19...Nxf2+.

Dec-31-11  BOSTER: I have such feeling that white had not great experience playing Dutch,and how said R.Fine "Against careless play black may well build up a strong attack".
Dec-31-11
Premium Chessgames Member
  chrisowen: 12...Rf3 looks like aparting I think rich pickings for black I would have layed it nf3+ first king over get pieces in play.

Bah humbug kh1 sidesteps my queen's threat so rook f3 in future lan on h3 scar white for life in tease e7 develop a6 turn the screw capture f3 book up on exposure st b7 assured it long in boon cage <ng4> light wobble mate is h2!

" Now is the time for all good men to come to the aid of the party "

Blanco mangles on slide after off kne5 go on enjoy yourself whether it be Remy or Pol Roger!

Dec-31-11  Marmot PFL: This one looked so obvious there really wasn't much to calculate. Terrible to lose like that with most of the pieces never even moved.
Dec-31-11  TheBish: V Kahn vs R Blanco Estera, 1939

Black to play (14...?) "Very Difficult"

Black mates after 14...Rxh3! 15. gxh3 Qxh3 16. f3 Qg3+ 17. Kh1 Ng4 18. Bf4 Qxf4 19. e8=Q+ (spite) Rxe8 20. Qd5+ Bxd5 21. Kg2 Qh2#.

Dec-31-11  newton296: I got it and I didn't even give it more then a glance. and I'm tired.

I'll bet almost everyone saq Rxh3 gxh3 Qxh3 as pretty darn strong right of the bat.

Dec-31-11
Premium Chessgames Member
  whiteshark: Destruction sacrifices are way more easier to calculate than anything else.
Dec-31-11  psmith: Trying to solve from the diagram without moving pieces 14Rxh3 seems pretty obvious again. 15. gxh3 is forced, I think, to stop mate. 15Qxh3 threatens mate on g2. I see two defenses. 16. Qd5+ Bxd5 17. cxd5 stops the mate. But Black has Queen against Knight and Rook, and should be able to pick up the e-pawn soon enough. This may be a trickier line than I can see without moving pieces though. The other defense at move 16 that I see is 16. f3 which allows 16Qg3+ 17. Kh1 Ng4 and I dont see a defense to mate on h2, really. So how close am I this time? There must be some tricks Ive missed, or this wouldnt qualify as difficult Time to look.
Dec-31-11  psmith: Well, once again I think I got it. This didn't seem to me to be Saturday-difficult at all.
Dec-31-11  M.D. Wilson: Not very difficult at all. The position plays itself.
Jan-01-12  King Death: < M.D. Wilson: Not very difficult at all. The position plays itself.>

This might have been "difficult" if it had started earlier instead of when ...Rh3 is begging to be played.

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