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Vitacek vs Oldrich Duras
Club Game (1900), Prague AUH
Center Game: Paulsen Attack Variation (C22)  ·  0-1

ANALYSIS [x]

FEN COPIED

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Given 48 times; par: 38 [what's this?]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 4 OF 5 ·  Later Kibitzing>
Mar-17-12  karnak64: There's something just splendid, I think, about that name "Oldrich Duras." Sounds like he should be the wise old warrior of some medieval epic. (And "Vitacek" should be the name of his sword.)

Oh, and what a splendid combination. I was never close to the solution.

Mar-17-12  gofer: <sevenseaman> : If only I had a chess engine! Perhaps I wouldn't make the horrendous errors like yesterday that <abuzic> picked up on.

If I ever use any kind of software it is normally <Crafty EGT> and that is mostly when I am less than motivated to do my day job. I end up spending hours trying all the combinations that are out there until I beat him.

I do have a 10 year old "Fritz for Fun" CD that tells me "Are you sure you want to do that you dumb-ass!" But my work laptop is now on Windows 7 and I doubt it will run!

P.S. Thanks for throwing in the extra puzzles. It is nice to have more than one a day...

Mar-17-12  jhelix70: giddy with joy--finally saw a saturday puzzle to the end :-)

I may need a life...

Mar-17-12  goodevans: <Once> So we have different opinions about what constitutes vulgarity. I'm sure you're equally baffled why I can't see the merit of your opinion, but that's life.

I will consider your advice how I should improve myself as an individual.

Mar-17-12  awfulhangover: 1.-Nb3+ also leads to mate in 5.

1...Nb3+ 2.cxb3 Qe3+ 3.Bd2 Qxd2+ 4.Rxd2 Rf1+ 5.Kc2 Bb1#

Cheers!

Mar-17-12  David2009: Vitacek vs Duras, 1900 Black 22...?

Back to POTDs after other priorities. I cannot see a direct mate starting Qe3+ so I will play 22...R(7)f2 seeing (A) 23.Bh7+ Qxh7 forced but good 24.Qxh7+ Kxh7 25.Bxd4 Bxd4 26.Rxd4 Rxc7+ 27.Kd1 Rxb7 threatening mate and with what looks like a decisive attack; (B) 23.Bxd4 Bxd4 24.Nxe2 Be3+ 25.Rd2 Rxe2 GOOT since 26.Rd1 Rxd2 27.Rxd2 allows Qe1# and the alterntaive 27.Bh7+ first etvc White ends up a piece down; (C) 23.Nxe2 Qe3+ 24.Rd2 Nxe2+ 25.Kd1 Nxc3+ 26.bxc3 Qxd2#. Time to check:
====
Duras spotted the forced mate I missed ending Bxb2# - bravo! (missing this, I was running out of wood). Let's look at the puzzle position


click for larger view

colours reversed:


click for larger view

on Crafty End Game Trainer (link http://www.chessvideos.tv/endgame-t...)

My line 22...Rff2 is refuted brilliantly by the robot: 23.Qxh8+! in normal colours when White seems at leat equal, for example 22...Rff2 23.Qxh8+ Kxh8 24.Bxd4+ Kg8 25.h4 Qe6 26.Nxe2 Rxe2 27.Bd3 Rg2 28.b3


click for larger view

I haven't checked with an engine but I think White has a winning attack.

Congratulations to the successful solvers, and enjoy exloring the alternatives with Crafty colours reversed.

Mar-17-12
Premium Chessgames Member
  kevin86: A brilliant finish! Black delivers a surprise mate by a bishop hidden in the corner...a move all the way to b2!
Mar-17-12  waustad: I had all of the pieces of the attack but in the wrong order.
Mar-17-12  Patriot: Material: Does it even matter here?!

I looked at this for a long time because there are so many promising looking candidates. It seems that 22...Rxc2+ forces the win.

22...Rxc2+ 23.Bxc2 Qe3+

A) 24.Bd2 Nb3+ 25.Bxb3 Bxb2+ 26.Kxb2 Qxb3+ 27.Kc1 Qb1#

B) 24.Rd2 Rf1+ 25.Bd1 Rxd1+ 26.Kxd1 Bb3+ 27.Kc1 (27.Rc2 Bxc2#) Qe1+ 28.Rd1 Qxd1#

Mar-17-12  viking78: At first view today's puzzle seems a bit straight forward then yesterday's. Black has enough pieces waiting to attack white King, although if black Queen leaves 7th rank without giving check to black King there is the danger of white Qh7# or if Rook at f8 would be gone to attack white let's say via f1 then Qh7 Kf8 Qxh8 Ke7 Qe8#. So basically I think Black should attack giving checks all the way cause a lot of pieces can do that. Candidate 1: 22....Nb3+ 23.cxb3(only) Qe3+ 24.Bd2 (not Rd2 Rf1+ Kc2 Bb1#) Qc5+ (not Bxb2+ Kxb2 (not Kc2 Rxd2+ Rxd2 Qc3+ Kg1 Qc1+ Ke2 Qf1+ Ke3 Qf4+ Ke2 (not Kd3 Qd4+ Ke2 Rf2+ Ke1 or d1 Qxd2#) Qe5+ Kd1 Rf1+ Kc2 Qb1#) Rxd2+ Rxd2 Qxd2+ Bc2 Qd4+ Kxa2 attack over) 25.Bc2 Bxb2+ 26.Kxb2 Qd4+ 27.Bc3 and attack over cause Qxd1 leads to Qh7#. So let's start over with the another check option: Candidate 2: <22...Qe3+ 23.Bd2> (not Rd2 Re1#) <Nb3+> (remember must keep checking not to let White give checkmate as I wrote in the beginning) <24.cxb3 Bxb2 25.Kxb2> (if Kc2 Qc3#) <25...Rxd2+ 26.Rxd2 Qxd2+> pfff and looks like Black can't win from here... Well, it means it's something else, maybe 25.Qd4+ but I can't see win from there neither, so I burned my brain for more then an hour and I think it's time to give up, really felt this would be my first Saturday victory, I have to wait for at least another week. Time to read the posts and see where is the key.
Mar-17-12  kelvi: Nice attack showing the strengths of different pieces in such a position!

For example, with a different sequence of the same moves, it gets to mate using different pieces. One such (slower) line is -

22. .. Nb3+
23. cb3 Qe3+
24. Bd2 Bxb2+ (24. Rd2 Re1+ 25. Kc2 Bb1#)
25. Kxb2 Rxd2+ (25. Kc2 Qb3#)
26. Rxd2 Qb3+
27. K*1 Rf1+
28. R*1 RxR#

Mar-17-12  Patriot: Missed it completely! In line A, 25.Bxb3 is check so the whole thing fails. This was tough!
Mar-17-12  Patriot: <agb2002> <If the black knight, the pawn on c2 and the bishop on c3 disappeared then Black would deliver mate with ... Bxb2. Hence, 22... Qe3+ 23.Bd2 (23.Rd2 Re(f)1#) 23... Qxd2+ 24.Rxd2 Rf1+ 25.Rd1 Nb3+ 26.cxb3 Bxb2#.>

Seriously, this is all it took for you to solve this? I spent forever looking at this and was overwhelmed with too many permutations!

Mar-17-12  BOSTER: Honestly, I have to explain what helped me to find the correct moves order in this not very easy solution: If Duras could find it (I hope) , I have to . Believe me this is an excellent stimulus, and certainly , the back rank weakness and the open file for f8 rook support my decision.

22...Qe3+ 23.Bd2 Qxd2+ 24.Rxd2 Rf1+ 25.Rd1 Nb3+ 26.cxb3 bxb2#.

I guess you need the great imagination looking at <POTD> see the final position.

Mar-17-12
Premium Chessgames Member
  ajk68: A possible variant is Qe3+ Bd2 Nb3+ cxb3 Bxb2+. I haven't run it through a computer but I think it leads to mate no matter what white tries.
Mar-17-12
Premium Chessgames Member
  doubledrooks: I transposed moves from the game line, but it still seems to be mate in five:

22...Qe3+ 23. Bd2 (23. Rd2 Re1#) Nb3+ 24. cb Qxd2+ 25. Rxd2 Rf1+ and now:

a. 26. Kc2 Bb1#

b. 26. Rd1 Bxb2#

I confirmed this with Crafty.

Mar-17-12  mikmik777: Black to play: 22. ...?
(Vitacek vs Duras)
"Very Difficult"

Black has a very nice position. He has complete control of the e-file using the queen-rook battery. Black also has influence on the open f file, a2-g8 diagonal, and a1-h8 diagonal. Also, Black's knight is well placed in the center. Although his king is quite exposed, it's not currently on immediate danger. White, on the other hand, has 2 pieces undeveloped at g1 and h1. His king has a cramped position on the queenside. I managed to calculate the resulting variation:

22. ...Qe3+
23.Bd2
(23.Rd2 Re1 mate; 23.Rd2 Rf1 mate)
23. ...Qxd2+!!!(Sacrifices the queen but gaining a tempo) 24.Rxd2(forced)
24. ...Rf1+
25.Rd1 Nb3+!
26.cxb3 Bxb2+ mate

I managed to solve the puzzle in less than 5 minutes, owing to the nature of the tree analysis.. Time to check the answer..

Got it right!..:)

Mar-17-12
Premium Chessgames Member
  Jimfromprovidence: For those looking for more, here's a great game to study (I found it in one of Nunn's books), with an excellent puzzle as well.

It's BLACK to play and win, move 25.


click for larger view

Below is the game link.
B Lalic vs Khalifman, 1997

Mar-17-12
Premium Chessgames Member
  keypusher: Couldn't solve it without touching the pieces. Beautful combination.
Mar-17-12  sevenseaman: <jimfromprovidence> Useful link to Lalic-Khalifman. Black is very aggressive. Do you have a link to the game with Nunn's annotations, may be video link.
Mar-17-12  LoveThatJoker: <Jimfromprovidence>

I'm liking <25...Rxa2! 26. Rxf5>

[26. Bd3 Bxd3 27. Qxd3 Ra1+ 28. Kc2 Nb4+ 29. Kb3 (29. Kxc3 Ra3+ is even better for Black) 29...Ra3+! 30. Kxa3 (30. Kc4 Nxd3 leaves Black a R up) 30...Nxc3+ 31. Kb3 Nxe5 and Black emerges a piece and two pawns up.]

<26...Nb4 27. Kb1>

(27. Bd3 Ra1+ 28. Bb1 c2! and Black wins)

<27...c2+ 28. Kc1 Ra1+> and 29...c1=Q+ is unstoppable .

I'm going to click on the link right now to see if I got it right.

LTJ

Mar-17-12
Premium Chessgames Member
  Jimfromprovidence: <LTJ> <sevenseamen>

I'll comment on your posts on that game's page, in order to not to muddy the kibitzes concerning today's puzzle.

Mar-17-12  Crispy Seagull: The position shows a lot of promise for both sides. Too much in fact for me to see through! What a great finish!
Mar-17-12  Memethecat: I started looking at this puzzle almost 4hrs ago determined I would succeed & hallelujah on my 5th stint it came to me .

22...Qe3+ 23Bd2 Qxd2+ 24Rxd2 (this 1st part was there from the beginning)24...Rf1+ 25Rd1 Nb3+ 26cxb3 Bxb2#

The strange thing was, on the last time I looked it just all appeared & seemed so obvious, almost Monday like & I couldn't understand why such a simple thing had taken so long.

I understand, of course, by that time my mind was so familiar with the puzzle & all the elements, but it ain't happened to me before, hence the exuberance. ^.^

Mar-17-12  tacticalmonster: very easy: 22 Qe3+ 23 Bd2 (23 Rd2 Rf1#) Qxd2+ 24 Rxd2 Rf1+ 25 Rd1 Nb3+ 26 cxb3 Bxb2#

Time spent: 90 sec

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