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Emanuel Lasker vs Vasja Pirc
Moscow (1935), Moscow URS, rd 19, Mar-14
Sicilian Defense: Scheveningen. Classical Variation Paulsen Variation (B85)  ·  1-0



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Given 40 times; par: 25 [what's this?]

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Kibitzer's Corner
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Sep-25-11  JoergWalter: get a brain first.
Premium Chessgames Member
  chrisowen: Overall up and down hip hooray Flasker alabaster white queen

does the damage tight finish <sevenseasman> esque easy

click for larger view

wrecking black nevermind Pirc next time a bunk up with Roatop

night before? White monopoly it is after xnf6 porky pig gobbles

king rafter in etude ar good rack man in of sweeping read wood

clearance rook still vase flower!

Sep-25-11  LIFE Master AJ: Expected.

I will quote a movie here:

"I am so disappointed, Obi-wan told me so much about you ... SURELY YOU CAN DO BETTER!" (?)

Sep-25-11  LIFE Master AJ: Expected.

I will quote a movie here:

"I am so disappointed, Obi-wan told me so much about you ... SURELY YOU CAN DO BETTER!" (?)

Premium Chessgames Member
  AylerKupp: <cschornak> While you're technically correct as far as the definition of Moore's law, a lot depends on how you define "speed". True, clock rate has not been increasing dramatically in the last few years (mostly due to issues with heat dissipation and power consumption) so if that's the definition of "speed" then strictly speaking the speed curve is starting to flatten out. But if you define "speed" as the time that it takes to solve a problem (like a chess puzzle), then the extra available chip real estate has been mostly used to increase the number of processor cores in a single chip. So, along with the improvement in chip architecture (e.g. from 32-bit to 64-bit to 128-bit data paths), the reduction in transmission delays from shorter connection paths due to reduced die sizes (I think it's down to 32 nm), and the development of better parallel and distributed algorithms, the "speed" with which a problem can be solved by the processing power contained in a single chip has certainly continued to increased tremendously.

Whether this type of "speed" has increased at a rate similar to the increase in chip component density predicted by Moore's law I can't say. But a 4-core chip can probably solve a chess puzzle 3 times faster than a 1-core chip running at the same clock rate, and an 8-core chip can probably solve the same puzzle 5 times faster than a 1-core chip running at the same clock rate. So the "spirit" of Moore's law with regards to "speed" has certainly continued to increase.

Sep-25-11  morfishine: <sevenseaman>...On your comments:<14...Ke7> is logical thinking. Black cannot play this natural looking move because <14...Ke7 15. Nf5+exf5 Nd5+ wins>

I finally figured it out; I fell into the trap of trying to find the "insane" move instead of the best move (given the position); So, 14...Ke7 <15.e5> looked pretty "insane", which makes a sort of perverted logic since 15.Nf5+ was so much stronger! :)

Premium Chessgames Member
  Jimfromprovidence: Here is the position at resignation.

click for larger view

<dufferps> I think that 20…Bc6 is the most realistic move that black has, seeing white has the threat 21. Nd5+, winning the e3 bishop.

After 20...Bc6, white can go 21 Qh8, as <azubic> noted in his post. Also, white can play 21 Nd5+ right away. Now, after 21…Bxd5 22 exd5 here is the position.

click for larger view

One way to go is for black to take the d pawn while trying to protect the h pawn as well. So, after 22…Qxd5 23 Qh8 h6, white has 24 Qc3+, threatening the bishop.

click for larger view

White has safely consolidated his position and is ahead a rook and pawn vs. a bishop

click for larger view

A relatively easy side puzzle is to show how white can force a queen trade here.

Sep-25-11  Patriot: 13.Rxf6 gxf6 14.Qh5+

A) 14...Ke7 15.Nd5+

A.1) 15...exd5 16.exd5 threatening 17.Re1+

A.2) 15...Kd7 16.Qf7+ Kd8 17.Ne6+ Bxe6 18.Bb6+ Kc8 (18...Qc7 19.Bxc7+ Kc8 20.Nb6#) 19.Qe8#

A.3) 15...Kd8 16.Qf7 threatening 17.Ne6+ and 18.Bb6+

B) 14...Kd7 15.Qf7+

B.1) 15...Be7 16.Nf5 Re8 17.Nd5 exd5 18.exd5 threatening 19.Re1

B.2) 15...Kd8 16.Ne6+ Bxe6 17.Bb6+ Qc7 18.Bxc7+

C) 14...Kd8 15.Qf7

C.1) 15...Bd7 16.Qxf6+ and 17.Qxh8

C.2) 15...Be7 16.Nf5 Re8 17.Bb6+ Kd7 18.Nd5 exd5 19.exd5 with 20.Re1 threatened.

I would say 13.Rxf6 is called for here but it's not easy to work out the details. Let's see what really happened.

Sep-25-11  Patriot: I made quite a few mistakes here but I tried. It is interesting that I got the main variation (C.1) but a lot was off the mark.

This was more of an exercise in visualization for me because I wouldn't be able to calculate much of this OTB in any time control. So there was nothing realistic about my thought process on this one!

Sep-25-11  vonstolzing: Hello!
Best wishes from Buenos Aires!
For me this game was not a puzzle, because I'm a fan of Lasker.One of the latest gems of the genius. I believe that Lasker didn'd calculate all of the variants, like he did against Pillsbury in Petersburg.
Sep-25-11  CHESSTTCAMPS: Following is a link to the puzzle position using Crafty Endgame Trainer:

Crafty went straight into the C.2 line of my original post and puts up a tough defense, but I managed to win on the first attempt. Enjoy!

Sep-25-11  gofer: I would suggest the first two moves are quite easy to spot, but finding all the knight, bishop, rook and queen attacking combinations afterwards does may this a little tricky...

<13 Rxf6 gxf6>
<14 Qh5+ ...>

14 ... Kd7 15 Qf7+ Be7 (Kd8 Nxe6+ winning) 16 Nf5! Re8 17 Nxd6!! Kxd6 18 Qxe8 winning

14 ... Ke7 15 Nf5+! exf5 (Kd7 Qf7+ transposes to the line above) 16 Nd5+ Kd7 (Kd8 Bb6+ mating) 17 Qf7+ Kc6 18 Qc7+ Kb5 19 Qb6+ Ka4 20 b3+ mating!

<14 ... Kd8>
<15 Qf7 Be7>
<16 Nf5! Re8>
<17 Bb6+ Kd7>
<18 Nxd6 Kxd6>
<19 Qxe8 Qc6>
<20 Rd1+ Ke5>
<21 Bd4+ Kd6>
<22 Bxf6+ Kc7>
<23 Qxe7+> winning

Sep-25-11  victinho: yesterday's puzzle were harder than today's.
Sep-25-11  MiCrooks: Jim: isn't the Queen trade already forced? i.e. Black has to play Qc5 to both block the check and protect the Bishop. King move the Bishop drops and Bc5 b4 drops the Bishop again.
Sep-25-11  stst: A long and tiring day, and this insane puzzle must also be a long process.... just give a few strokes before bed time:
13.RxN RxR
14.Qh5+ Kd8
15.Ne6+ QxN
16.Bb6+ Kd7
17.Rd1 Be7
18.Nd5 Qxe4
19.Qf7 Rf8
20.Nxf6+ Kc6
21.QxR BxQ
22.NxQ KxB
W is one piece down but got position and P advantage... Too tired to continue (have to get up very early tomorrow morning for work.) Bed time...
Premium Chessgames Member
  Jimfromprovidence: <MiCrooks> <Jim: isn't the Queen trade already forced? i.e. Black has to play Qc5 to both block the check and protect the Bishop. King move the Bishop drops and Bc5 b4 drops the Bishop again.>

I saw the bishop going to c5 first, then the pawn move and lastly black's queen move. 24...Bc5 25 b4 Qd4.

click for larger view

Sep-25-11  M.Hassan: "Insane" White to play 13.?
White has a Knight for a Bishop which is considered equal. Knight on f6 can be taken with promising attacks to follow:

13.Rxf6 gxf6
14.Qh5+ Ke7
15.Nf5+ exf5
16.Nd5+ Kd7 <....Kd8 17.Bb6+ Kd7 18.Qf7+ Kc6 19.Qc7+ Kb5 20.a4++ and it is checkmate or Queen is lost>

17.Nb6+ Kc6
White is now ahead by a Queen vs a Rook

Game may continue a different line if
Queen moves to d8 after check

13.Rxf6 gxf6
14.Qh5+ Kd8
15.Qf7 Be7
16.Nf5 threatening mate on e7
and Black Queen is lost
Time to check

Sep-26-11  jackalope: Hi all - just another novice here. Saw 13. Rxf6 gxf6 14. Qh5+. Thought 14. ... Ke7, but found that was incorrect and in my silly hubris thought 14. ... Kd8 was a blunder. Though he lost, Pirc played some pretty inspired defense after 13.
Sep-26-11  jackalope: Thanks to <sevenseaman>, et al for the analysis. I've just recently renewed my interest in chess and am finding the resources (Kibitzers, game collections, etc.) extraordinary.
Premium Chessgames Member
  al wazir: <Bluegrey>: Thanks, but I don't think 15...Bd7 is any improvement.
Sep-26-11  Beautiful.LMS: This was a beautiful combination by the great Lasker.
Aug-02-12  LoveThatJoker: Guess-the-Move Final Score:

Lasker vs Pirc, 1935.
Your score: 38 (par = 25)


Premium Chessgames Member
  perfidious: <parisattack: ....Has anyone done the math for a 32 piece tablebase vis-a-vis Moore's Law?>

Still working on the seven-piece tablebase-the 32 should be a month or so away now.

Premium Chessgames Member
  FSR: This Lasker was strong like bull. At age 66, he was undefeated in this tournament, finishing just a half point out of first in this tournament, behind the joint winners Botvinnik and Flohr. Another crush: Lasker vs Capablanca, 1935.
Dec-09-18  Saniyat24: The famous Lasker-Pirc trap...!
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