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Dragoljub Janosevic vs Borislav Ivkov
Belgrade (1954), Belgrade YUG, rd 19, Nov-13
Sicilian Defense: Wing Gambit. Deferred Variation (B50)  ·  0-1

ANALYSIS [x]

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Kibitzer's Corner
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Jun-16-14
Premium Chessgames Member
  FSR: <al wazir> I agree that 23...Rc2 <looks> very strong. And it is a good move. But according to Houdini 3, Black gets only a tiny advantage if both sides play perfectly, i.e. 24.Nh5! Nxh5 25.Qd1! Nf6 (I grant you, White's play looks very stupid) 26.Qf3! Bg7 27. Bh6! Qe8! 28.Bxg7 Kxg7 29.Qg3+ Kf8! 30.Qb3! Rc4! 31.Rd1! Rxd4! 32.Rxd4 Nc6! 33. Qxb7! Qxe5 34.Rd1 Qc3 35.Qb1 with a minuscule advantage to Black (-0.17).
Jun-16-14  Once:


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Today's POTD is a tricky little blighter. Not too hard once you see it, but there are a few false clues to lead you astray.

Your first thought might be to mate on g2, channelling this mating pattern...


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Unfortunately the Rg1 stops that little idea. Then you might think of a smothered mate ...


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But it's hard to get the black queen out of the way so that the knight can land on f2 with check. Then you might think about the h file mate with 28. Ng3+ hxg3 29. Qxh5#


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But that doesn't work either. 28...Nxg3 spoils the fun and 29. Qxh5 is an illegal move. But go back to the original diagram and picture it in post apocalypse widescreen with all the major players wiped out...


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The Ne4 controls f2, which means that white has a back rank mate weakness whether his king is on h1 or g1.

And that, after a few false starts, leads us to 28... Qxg1+. It's pattern recognition, but today's puzzle is a little bit unusual (for a Monday) because it hints at several plausible mating patterns.

Jun-16-14  Oxspawn: I did eventually find
28. Qxg1+
29. Kxg1 Rc1+
(30. Qe1 Rxe1++)

But only after preening myself on a very pretty suffocating "mate":

28. Qxg2+
29. Rxg2 Rc1+
30 Rg1 Nf2++

I found this highly satisfying because white “wins” with the rapier rather than the broadsword (white only loses a pawn) and because the white queen does not get a chance to make a pointless intervention. Full of hubris, I gave the position one last check and only then noticed that it actually goes 28. Qxg2+
29. Rxg2+ Oh blimey
Tripped up on a Monday.

Jun-16-14  Nick46: A good day for ohs and vees.
Jun-16-14  morfishine: 28...Qxg1+ forces mate

*****
<FSR> That Houdini line with the -.17 eval is fairly fascinating, all things considered

Jun-16-14  Caissas Clown: <Oxspawn>,I "found" the Qxg2 line,too. Sometimes after the puzzle is solved , it's fun to look for an alternative, albeit longer,forced mate.

If g8 was occupied not by the Black K , but by a Rook , it would work of course. Ahhh..it's always the little things !:-)

Jun-16-14
Premium Chessgames Member
  Penguincw: Damn. I almost got stuck on a Monday puzzle (too busy of thinking of Smother's mate). I eventually saw 28...Qxg1+ 29.Kxg1 Rc1+ 30.Qe1 Rxe1# 0-1 (knight covers f2).
Jun-16-14  zb2cr: Saw the first tow moves immediately.
28. ... Qxg1+; 29. Kxg1(forced), Rc1+.
What I <didn't> immediately see was that White had a useless interposition with the Queen: 30. Qe1, Rx1#. So it's mate in three, not mate in two.
Jun-16-14
Premium Chessgames Member
  benveniste: Put me in the "I spent too long looking for a smothered mate" camp.
Jun-16-14  SaltiNeil: Am I missing something or are those who looked at 28...Qxg2+?? missing 29 Rxg2 with check to the black king, forcing the loss of the white rook on the next move?
Jun-16-14  TheTamale: <standardwisdom: Might be black to play, but the idea that Monday = Queen sac still remains. Got a bit distracted looking for smothered mate, but the back rank mate with knight checking the f2 square is helpful.>

I managed to succeed in finding the smothered mate! 28) Qxg2+, Rxg2; 29) Rc1+, Rg1, 30) Ng2#!!!

Only two problems. One, it is not mate. The king can move to g2. Two, the sequence is illegal. 28) ... Rxg2 is check, so White must protect his king.

Other than that, it represents some of the finest brainwork of my storied lifetime.

Jun-16-14  Oxspawn: I think <SaltiNeil> that <those who looked at 28....Qxg2> (myself included) did realise the fatal check to the black king - it just took us time to get there. See my <only then noticed that it actually goes 28. Qxg2+ 29. Rxg2+ Oh blimey>; Caissas Clown's use of quote marks on "found" and and The Tamale's ironic <some of the finest brainwork of my storied lifetime>. Sometimes it is good to post what is really happening in the brains of mortals. And apart from losing almost immediately it was fine play.
Jun-16-14  kevin86: This one is easy: just capture the black queen with the black knight and you have checkmate. oops, can't do that:

Instead capture the rook with the queen and mate with the rook next move. (White shouldn't have captured the bishop last move).

Not a smothered mate but a back row mate.

Jun-16-14
Premium Chessgames Member
  gawain: This was a bit harder than most Monday. The solution 28...Qxg1+ was not the first move that occurred to me. I was looking for a mate to be delivered by the knight. But it did not take long to find the right way,
Jun-16-14
Premium Chessgames Member
  chrisowen: A vip mate for g1 in won gab go ok via en mass of the queen f2 a mess for light to mop up chucks the toys out the pram by queen take down bishop aim b4 had to play at h3 instead for luft across bottle neck kin seriously needs air so white's light army has to cover back rank weaknesses abound seen off b4 provokes the mistake hive mind combine rook: emperor at c2 het up ply a queen second rank also gets around can b4 act be as the sacrifice yes a duck of h3 silly billy go at b1 in the blink of an g1,

eye b4 too cooks as black wind is mayy off b4 queen banal like a secret kabbal the point he at basic mistake it brew in aloof at h3 Ive requested to sidestep any of queen for hive black intent back bold bind I spot inter queen b1 lavish as no praise on beat a path to his door was at h3 biff good baffle glide a bid defog bades I eg b4 doesn't bode well for light having no luft for his back room at baulk line he broke the b4 anchors het up h3 looks again equal hod carry at a brick dust cart before the e4 horse and a c2 carry rookall focus a chin act b4 lack gusto haway,

the lads pile in g1 en famile inch effect as chase find fold cheap fix at h3 had enough mark golden cage as I baffle eg suffer the sling a guff at b4 have free hint as I fab scotch his back rank eg h3 all set for b4 queen funder?

Three move mate a flump and fluff the cushion bold blow aim e4 knight to sniff queen out and coordain rook to celebrate again let fly off the handle a b1 scuse fingers count back blood for black be to arriving 28...Qxg1+ bodge job b4 works at blacks behest a badge of do bind donkey a f2 able give carry booed over get having question of a fashion:

que grace the gas pedal a good flay in rack a loop old glory sail homes set as fan dangle a mind light in the quagmire bus tore in band have for knight inter queen boot of gaslaning 29.Kxg1 Rc1+ inceed the point back to cradle rook mates fill etc might non plus a queen sac small price for to pay mate again see ravel undone query over why b4 all face off a blank cross off b4 circles around 30.Qe1 Rxe1#

Jun-16-14  dfcx: after looking at g2 and potential knight checks on g3/f2, I found the back rank mate.

28...Qxg1+
29. Kxg1 Rc1+
30. Qe1 Rxe1#

Jun-16-14
Premium Chessgames Member
  al wazir: <FSR: Black gets only a tiny advantage if both sides play perfectly>. No human player could find all those moves.
Jun-16-14  sombreronegro: Nice queenside counter attack by black. Looks like white was desperately trying to justify the pawn sac but weakened the queen-side too much trying to make something happen.
Jun-16-14
Premium Chessgames Member
  FSR: <al wazir> No argument. I'm just saying that objectively, 23...Rc2 is apparently not nearly as crushing as it seems.
Jun-16-14  Chess Dad: With the Ne4 preventing the white King from fleeing to f2, it's a back-row mate after the Monday Queen Sacrifice.

28... Qxg1+ 29. Kxg1 Rc1+ 30.Qe1 Rxe1#.

Jun-16-14
Premium Chessgames Member
  Sally Simpson: First thought it was our friend Borislav Ivanov who was Black. Then saw the date, then saw the mate.

Nice entertaining game. Quite a few things to mull over in there.

Jun-16-14  BOSTER: This is the pos. white to play 22.


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I'd play 22.Nh6+ gxh6 23.Qf5 with very sharp game.

Jun-16-14  benjaminpugh: You gotta play psychologically in positions like this. You're not just winning this game, you are out-psyching your opponent (and anyone who reads the scoreline) to win the next game. The only thing standing in the way of a smothered mate, Nf2++, is black's queen. How to get rid of it? Easy, a sacrifice.

The only square black can move its queen to be captured necessarily leaving the smothered mate position is f6, leaving the queen to be captured by the h5 knight. So move the queen to f6, look distressingly worried once you let your hand off the piece, audibly moan when the h5 knight captures your queen (call yourself stupid over and over), then look surprised when you casually announce Nf6 mate on the next move.

Jun-16-14
Premium Chessgames Member
  FSR: <benjaminpugh: You gotta play psychologically in positions like this. You're not just winning this game, you are out-psyching your opponent (and anyone who reads the scoreline) to win the next game. The only thing standing in the way of a smothered mate, Nf2++, is black's queen. How to get rid of it? Easy, a sacrifice.

The only square black can move its queen to be captured necessarily leaving the smothered mate position is f6, leaving the queen to be captured by the h5 knight. So move the queen to f6, look distressingly worried once you let your hand off the piece, audibly moan when the h5 knight captures your queen (call yourself stupid over and over), then look surprised when you casually announce Nf6 mate on the next move.>

White will play Nxf6 <CHECK!>, and your self-condemnations will be entirely sincere.

Aug-09-24
Premium Chessgames Member
  WTHarvey: Black mates in 3.


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28. ... ?

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