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Michael Wei vs Junta Ikeda
Australian Open (2013), ?, rd 3, Jan-04
Sicilian Defense: Kan. Swiss Cheese Variation (B42)  ·  0-1



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Mar-06-14  The HeavenSmile: I'm guessing the plan after 33...Bxe2 is to pile up blacks forces on the bishop with Rh3+ and Nf4+. Then after trading of the rooks, bishop and knight leaving the king on e2, Bxc4+ skewers the remaining knight and wins the game?
Premium Chessgames Member
  Oxspawn: After botching Wednesday I found my way on a Thursday. Not perfect, as I was not sure what happened after 37. Kxg4 and failed to see that 37. Rxh2 sealed the deal as white cannot defend both bishop and knight, after 38. Nf4.

Once I started thinking about how to get the bishop away from defending h3, the moves seemed to flow naturally - so for me this was much less hard than yesterday. Playing through the game I spent most of it thinking that white was winning, until suddenly the black pieces formed a vice. Very elegant.

Quick question. Is there a chessgames tool to teach me how not to lose in the opening? If I survive the first dozen moves it is usually with my head banaged, my limbs in a splint and my knights parked on the long stay car park on the ring road.

Mar-06-14  morfishine:

33...e2 34.Bxe2 34...Rh3+ wins the Knight

or 33...e2 34.Rxe2 Bxc4 also wins a piece

PM: I was wrong about Black winning apiece after 33...e2 34.Rxe2 Bxc4 when White is forced to surrender the exchange (not that it saves the game)


Mar-06-14  diagonalley: i eventually came to 33... P-K7 almost in desperation... 'cos there was no other goddam move left! ...nice puzzle
Mar-06-14  Cheapo by the Dozen: I'm not starting out with any crushingly winning tries. The three ideas I see are:

33 ... e2. 34 Rxe2 loses the exchange, while 34 Bxe2 loses the knight and 34 Bg2 loses the c-pawn. But in a couple of those lines it looks like White can recover material.

33 ... Rf8. But I don't see how to punch through after 34 Bg2 and 35 Rxe3; the rook on the 7th doesn't seem to accomplish much.

Overload of the bishop, which guards both c4 and h3. But I don't see how to make that work, since -- among other difficulties -- ... Bxc4 undefends the g-pawn.

Premium Chessgames Member
  keypusher: Fun game! Black sure got on top in a hurry.

click for larger view

I found 33....e2 easily enough, but I missed that White could limit the damage after 34.Rxe2 Bxc4 with 35.Nd2.

Premium Chessgames Member
  Penguincw: 38.Kf3 Nf4 and it's pretty much all over.

Great move with 33...e2. I was thinking something like 33...Nf4 or 33...Rh3+ to try to set up a mating net, but nothing really works.

Mar-06-14  patzer2: <Cheapo by the Dozen: ...But I don't see how to punch through after 34 Bg2...> I was thinking if 34...Bg2 then 35. Nf4 wins, but I haven't checked it on the computer yet.
Mar-06-14  Cheapo by the Dozen: If White plays 35 Nc1, I don't see him losing a piece quickly the way he did in the actual game. Am I missing something?

If I am, then I didn't solve the problem, despite seeing 33 ... e2. If not, then I did solve it. :)

Mar-06-14  minethatbird08: <The HeavenSmile:> if the bishop takes on e2 then Rh3+ wins the knight.
Mar-06-14  gofer: I really would like to keep hold of Pe3, but I think he is going to be cannon fodder to the greater cause.

<33 ... e2>

The pawn is immune from capture...

34 Rxe2 Bxc4

34 Bxe2 Rh3+

<34 Bg2 Rd8!>

Black's mobile rook out-manouevers white's static pieces. The pawn is still immune from capture as black is now threatening Rd3+! winning Nb3 and <34 Nc1> results in <34 ... Rd1> still winning the knight! Also and probably even more importantly the black rook is now covering the knight's only decent escape square too!

35 Rxe2 Rd3+

<34 Kf2 ...>

What a miserable choice! Pg4 is now no longer attacked and so Be6 is free to attack itself.

<35 ... Bxc5>

Black can't go down this route either!


Hmmm, the exchange was a better line for white, but I doubt that white could have held on for much longer regardless of the final position.

Mar-06-14  FlashinthePan: <al wazir 33...Bxc4 34. Bxc4 Rh3+> Thanks, I totally missed this.
Mar-06-14  kevin86: Nice puzzle. White's pieces are forced to inrterfere with each other :)

Black will win a minor piece at the end as 34 ♔f3 is met by ♘f4!

Mar-06-14  BOSTER: < FPan 33...Bxc4 34. Bxc4 Rh3+ 35. Kg2?>
Correct 35.Kxg4.
Mar-06-14  BOSTER: <FSR 33...e2 . I refuse to analyze further> Good for you. 34 Bg2.
Premium Chessgames Member
  Once: So this is the Swiss cheese variation?

Man walks into an expensive restaurant and orders a plate of Emmental. I suppose he ordered other things before the cheese board, oh I don't know, let's say he has the pate and melba toast for a starter, a nice pan-fried sea bass for mains and a chocolate tart for pud. And then he orders the aforementioned Swiss cheese. As you do.

The waiter brings along a plate of cheese, some wafer biscuits and a grape. Artfully arranged on a wooden board with a specially carved niche wherein for the grape to sit without undue roll-away-age in the transportation from kitchen to dining table.

"What is this?" demands the man in a fit of indignant foodie rage. "This is not Emmental! The holes are too large."

The waiter has been schooled in the art of "the customer is always right". He smiles benevolently at the diner.

"Sir, the cheese is indeed Emmental. The holes, regrettably, I cannot vouch for."

Mar-06-14  PJs Studio: I couldn't find e2. I looked at it and didn't see Rh3+ picking up the knight after Bxe2. Thanks Morphshine. My thought was 33...Rf8 which ruins everything black had played for.
Mar-06-14  haydn20: <Once> reminded me of my sister, who, after a fine dinner of quail said: "Hm, tasty little sucker". Which applies to this puzzle as well.
Premium Chessgames Member
  agb2002: The material is identical.

White threatens 34.Rxe3.

The white bishop protects h3 and the pawn on c4, and the white knight is defenseless. These details suggest 33... e2:

A) 34.Bxe2 Rh3+ 35.Kf2 Rxb3 - + [N vs 2P].

B) 34.Rxe2 Bxc4 and White loses the exchange or a piece.

C) 34.Bg2 Bxc4

C.1) 35.Rb1 Bxb3 wins the knight (36.Rxb3 e1=Q+).

C.2) 35.Nd2 Bd3 wins a pawn (36.Kxg4 Rxh2).

Premium Chessgames Member
  perfidious: White came to understand the error of his Weis in this game.
Mar-06-14  Refused: 33...e2 should pull the plug.
The Bishop is simply overleaded and can't defend both h3 and c4 at the same time anymore. After netting in the exchange it's just a matter of technique.
Mar-06-14  patzer2: Plugged 33...e2! 34. Bg2 into the computer (diagram below):

click for larger view

From this position (after 33...e2 34. Bg2), my 34...Nf4! and <gofer>'s 34...Rd8! are both winning. Fritz 12 @ 22 depth, on a dual core processor running at 2.1 GHZ, gives 34...Nf4! as slightly stronger than 34...Rd8!:

1. (-6.33): 34...Nf4 35.Nc1 Bxc4 36.h3 gxh3 37.Bf3 h2 38.Rh1 Rd8 39.Nxe2 Nxe2+ 40.Bxe2 Bxe2 41.Rxh2 Bd1 42.Rg2 Bxa4 43.Kf3+ Kf6 44.Rb2 Ke6 45.Ke3 Rh8

2. (-4.69): 34...Rd8 35.Rxe2 Rd3+ 36.Kf2 Rxb3 37.Rc2 Nh4 38.c5 bxc5 39.Bf1 Nf3 40.Rxc5 Nxh2 41.Bc4 Rc3 42.Bxe6 Rxc5 43.b6 Rc2+ 44.Kg3 Rb2 45.Bc4 Kf6 46.b7

Mar-06-14  Patriot: Material is even.


34.Bxe2 Rh3+ followed by 35...Rxb3

34.Rxe2 Bxc4

34.Bxc4 Nd2 35.Bd3 Kxg4 36.Rxh2 looks good I think.

Mar-06-14 33...e2 sets up a cute bishop-rook mutual interference pattern.
Mar-06-14  patzer2: <Once><Sir, the cheese is indeed Emmental. The holes, regrettably, I cannot vouch for."> Learned something about Swiss Cheese quality by researching your entertaining post.


"Emmentaler or Emmental is a yellow, medium-hard cheese that originated in the area around Emmental, in Switzerland. It is one of the cheeses of Switzerland, and is sometimes known as Swiss cheese..."

"Failure to remove CO2 bubbles during production, due to inconsistent pressing, results in the large holes ("eyes") characteristic of this cheese. Historically, the holes were a sign of imperfection, and until modern times, cheese makers would try to avoid them..."

"Emmentaler Switzerland Premier Cru is a special Emmentaler aged for 14 months in humid caves. It was the first cheese from Switzerland to win the title World Champion at the Wisconsin (USA) Cheese World Championships in 2006.[5] It was nominated best cheese among over 1,700 competitors.[6] For this achievement, it has received a place in the Historic Museum in Bern, Switzerland."

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