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Vlastimil Jansa vs Jan Smejkal
CSR-ch International (1969), Luhacovice CSR, rd 12, Jun-??
Sicilian Defense: Najdorf Variation (B98)  ·  0-1



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sac: 34...Qxb2+ PGN: download | view | print Help: general | java-troubleshooting

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Premium Chessgames Member
  chrisowen: Sac on b2. For dashing around, white's queen opens a fatal early door. 24 Kc1 frees incase of Nxc5 but as RV says c4 is crushing. 30 f6 administers a defence getting out of the jam but he should've got it rolling sooner.
Premium Chessgames Member
  johnlspouge: Monday (Very Easy): Jansa vs Smejkal, 1969 (34?)

Black to play and win.

Material: B for N+3P. The White Kc1 has 1 legal move, to d2 on the open d-file. Black has a battery Ra8 and Ra1 with indisputable possession of the a-file. Black has infiltrated the light squares of the White K position with Pc4 and Qb3. Only the Black Bs are inactive. White has a substantial counterattack and threatens mate in one with Qh8#, so Black must counter with a check.

Candidates (34): Qxb2+, Qxc3+, Rxb1+, Bg5+

34Qxb2+ 35.Kxb2 R8a2 36.Kc1 Ba3#

Sep-08-08  awfulhangover: I wonder how white felt when black played 34.-Qxb2+ He thought he had a forced win himself, but then BANG!
Sep-08-08  DarthStapler: I kept thinking Rxb1+
Sep-08-08  hamham: Wow this one was hard for a monday, this should be a wednesday or tuesday IMO.
Sep-08-08  A.G. Argent: No, <DaveZechiel>, highly doubtful you won but congrats on the winning that was done over the weekend that lies within another realm of interest for you, literally and figuratively, if you know what I mean. Smiting the Serpent etc. Well done.
Sep-08-08  YouRang: Took me a long time to find it. :-(

I probably wouldn't have found it except I told myself that "It's Monday, so there's probably a queen sac".

First I tried ...Qxc3 and enjoyed a wild goose chase. Then I tried ...Qxb2 and noticed that it won.

Nothing to be proud of here... :-p

Sep-08-08  The Bycote: ToTheKings:

"You mean
34 .. Ba4??
35 Qh7#"

No, he doesn't mean that at all, Qh7# is an illegal move in that line. ;^) If white plays 34.Rd2 instead of Qxh6 (which is what they were analyzing), his queen is still on e3, not in position to deliver mate on h7 on his next move.

Sep-08-08  Justawoodpusher: Jansa is playing at the first board for my club despite his age. Not a good day for him, but maybe he was already in time trouble... Seeing the mate in one for white, the puzzle was easy to find.
Premium Chessgames Member
  kevin86: Te winning move was my third try: I first looked at 34 ♖xb1+ and then ♕c2+. The winning move is 34 ...♕xb2+ 35 ♔xb2 ♖8a2+ 36 ♔c1 ♗a3#. Who would have thought at move 34 that the bishop would mate at a3?.

Black won just in time as white has two mates in one left on the table ♕h7# and ♕h8#.

Sep-08-08  VooDooMoves: When I posted earlier the diagram didn't have a white pawn on h4 (making some of my variations possibe, the line starting 34...Bg5+) and now it does. This happen to anyone else?
Sep-08-08  akapovsky: Iam so fustrated never solve monday puzzlez but go on easily until saturday why so???
Sep-08-08  mworld: ahhh, got it within 10 seconds - thats the way Monday should feel :)
Sep-08-08  lost in space: <<YouRang> wrote: Took me a long time to find it. :-( (snip) Nothing to be proud of here... :-p >

Same with me

Sep-08-08  AniamL: <Solid DD <To Confuse, 34. Rd2 loses by force I think.

34. ... Ba4!!
35. Almost any move Rxb1+
36. Kxb1 Qa2+!
37. Kxa2 Bc2+
38. Qa7 Rxa7#

Can someone please check?>>

37... Bc2 is mate :)

Sep-08-08  AniamL: However, I dare say that 34...Ba4 does not win after and a whole slew of checks.
Sep-08-08  Dr. J: Dr. J: ****** ANNOUNCEMENT ******** (Repeat)
I hereby announce the inauguration of the weekly <.J .rD Prize> (What can I say - I always was a little backwards) <cash value less than 1/10 - much less> to be awarded to the first person to correctly identify the theme of the week for the puzzles, judging to be done by whoever feels like it. All contestants are freely invited to nominate themselves, vote for themselves, even declare themselves the winner.

Note to the contestants so far: Just a thought, I think it somewhat unlikely that the weekly theme will already be apparent on Monday(s). But, hey, what do I know? (Let the arguments begin!)

Sep-08-08  TheaN: <YouRang: Took me a long time to find it. :-(

Nothing to be proud of here... :-p>

I think that it is overall misunderstood on cg that with these kind of puzzles, timing is the major key: no, it is not.

What mainly counts is that the patterns become familliar. Even if it would take you 30 minutes, there is something to be learned from: "hey, if I can mate in such positions now by giving away huge material, I should keep it in mind in my games." That is the issue.

Of course; taking extremely long won't be helpful, but the only time I think that is when I need more then ten minutes, which is usually the case for Saturday and Sunday.

Mondays, in general, are found easily within this ten minute mark, and even if not, they're usually so decisive that the lost time is not a problem, were it to be a game.

Sep-08-08  YouRang: <TheaN> My sense of being "not so proud" isn't so much connected with the amount of time I spent on it, but rather the quality of "analysis", which was heavily dependent on knowing that it was Monday.

If I came across this position in a real game, it might not be Monday, so I wouldn't know to sac my queen. :-(

Sep-08-08  MaxxLange: You have to feel for the person(s) who pick these puzzles. If they use an old-style sac-the-queen-for-mate-in-1 on Mondays, we are all "This was TOO EASY - even for a Monday". But a problem like today? "Seems like it was a Tuesday or Wednesday puzzle"

This was easy enough once you see that White has mate in 1, and you have to find something decisive. ...Rxb1+ does not work, hmmmm what else?

Sep-08-08  vibes43: Good puzzle. I don't automatically look for a Q sac on monday because I don't look at that first in games either. I knew, though, that I had to keep white in check to the end and that was key.
Premium Chessgames Member
  Once: <MaxxLange> Agree. When we spot the solution, we say "that was too easy for a Monday/ Tuesday" (delete as appropriate).

But when we don't get the solution, CG kindly gives us a ready-made excuse - "I thought that was particularly difficult for a Monday/ Tuesday" (delete as appropriate).

But, as you say, some poor soul has to choose the puzzle of the day,and then sit through all our moaning!

Step forward, unknown hero of CG - we would like to know who you are. And how you pick the puzzles ...

Sep-09-08  MostlyAverageJoe: For what it is worth: in my engine-based difficulty evaluation, this puzzle ranks as slightly above average Monday, but nowhere close to average Tuesday.
Sep-11-08  Confuse: <solid dd>

thats pretty hot. thanks for the line : )

Sep-12-08  patzer2: For the Monday September 8, 2008 puzzle solution, Black mates in two with 34...Qxb2+!
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