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Alexander Shabalov vs Irina Krush
Chessmaster US Championship 2005 (2004), San Diego, CA USA, rd 9, Dec-04
Sicilian Defense: Paulsen. Normal Variation (B45)  ·  1-0
ANALYSIS [x]

FEN COPIED

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sac: 38.Nd4+ PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 3 OF 3 ·  Later Kibitzing>
Jan-02-15  Ratt Boy: Agreeing with others, that this one was pretty easy for a Friday. And, for that, I thank CG.com.
Jan-02-15  fokers13: hardly "difficult" Nd4 is both forced and strong(queen fork and all) and the continuation thereafter is too simplistic

better fit for a wednesday.

Jan-02-15
Premium Chessgames Member
  Penguincw: Hmm. The rook's hanging on f8, so let's grab it. Oh nvm, black's threatening mate on e2.

The solution I came up was close: 38.Rg5+ Ke4 39.Qb7+ Kd3 40.Qxf3# 1-0. Just one flaw: 39...d5, and there is no mate.

Not really hard for a Friday puzzle when I come close to solving it.

Jan-02-15
Premium Chessgames Member
  paulalbert: Agree with comments that this seemed easy for Friday. It must be if I can solve it quickly!
Jan-02-15
Premium Chessgames Member
  patzer2: I'll confess I missed this Friday puzzle. I quickly calculated 38. Nd4+ exd4 39. Rg5+ Kf4

(diagram below)


click for larger view

However, in visualizing this position two moves ahead, I did not see the mate-in-two finish (i.e. 40. Qxd6+! Ke3/e4 41. Qxd4#) to this mate-in-four.

To make matters worse, I gave up on this line and instead went for 38. Ng3+?? which loses to 38...Kf4! (not 38...Kg4?? 39. Ne2+! ) 39. Qxf8 Qxc3+ 40. Kf2 Qd2+ 41. Kf1 Qd1+ 42. Kf2 Qd4+ 43. Kf1 Bg4 44. Ne2+ Bxe2+ 45. Kxe2 Qe3+ 46. Kd1 Qxg1+ (-8.91 @ 20 depth, Fritz 12).

P.S.: I have no problem quickly seeing the mate-in-two when looking at the diagram above. However, trying to see it four moves ahead from this Friday daily puzzle position (38. ?) was (at least for me) much more difficult.

Jan-02-15
Premium Chessgames Member
  Prudov: <paulalbert: Agree with comments that this seemed easy for Friday. It must be if I can solve it quickly!> I agree too. Only a few variations to consider.
Jan-02-15
Premium Chessgames Member
  maxi: Never mind if the problem is difficult or not, the tactics are very pretty.
Jan-02-15
Premium Chessgames Member
  thegoodanarchist: 38. Nd4+!

Not too "Shaby" :)

Jan-02-15
Premium Chessgames Member
  thegoodanarchist: <An Englishman: Good Evening: <posoo>, I pull no one's chain. I might be an Englishman or an English man, but I do not presently live in England.>

Where, then? Ulan Bator?

Jan-02-15
Premium Chessgames Member
  kevin86: Black's king is marched into opposition...and mate!
Jan-02-15  TheaN: Friday 2 January 2015 <38.?>

Odd for a Friday. White has only one real sensible puzzle move, and the ensuing forcing line is nothing compared to what we're used of a Friday puzzle.

White prevents the black mate in one threat (Qxe2#) by forking queen, bishop and king, forcing black to open the e-file. Big pieces decide afterwards: <38.Nd4+ (Ke4/Kf4 39.Nxc2 ) exd4 39.Rg5+ Kf4 40.Qxd6+ Ke3/Ke4 41.Qxd4# 1-0>. Again, odd.

Jan-02-15
Premium Chessgames Member
  chrisowen: Goof f5 rump d5 stake level game thod

carry in light horse to hammer cent above in a d4 end um e4 carries the fight often yet d4 fork blacks queen gets co general.

Lyeth under a fork and white above easy win snaffle cut off e4 up ride a lion gob ack d4 cuff feckle eedjut a king f5 had to run over d5 i see tumble mission select over f5 immediate disaster band d5 lay in spread queens e7 for the kill honour in.

Hope in a feed it took in light again be fly d4 off the handle back cub d4 jocular sentry me knight a frights to cuff bog a c2 taker down ala show boat mack erm knight ellucidates off tender spot ash d4 fork is helluva way dish to go again up tie 4d a knight yeah at wins king after step e5 take at select back arm d4 a mate in 3 jog rough a neap tide send kind.

Dilemma fair dinkum aorta d6 a kaputz it each in effect e7 wins a d6 or e3 donkey up in light ash d4 oak deep and dense thicket quarry ground e7 over a margin mister wit e4 only falls in place over the safe spark off team f5 ave intrepid brew d5 and only a rep looms can you wilt ie vet knight first wave f5 pilt frame down man e4 in hair lock queen cuckold of age to boona tomb hop along bind for hope in affable vied mend flinch aorta flush a vow agile any og hurt castigated it eddy a wave d5 light shuttle queen cockles and muscle b7 and arm e7 gantry finale king f5 way of the tao wangle ulf fan e7 dangle as arm a ps act draw offer maybe coming it ok in ogle d5 i ukelele f8 out of the frame flip side so sub par aim op zill ash f5 an healthy roi d4 a knight suits you again sir as have uniform appraisal on the road knight in rich a drum horse for one wave clink in fly dids up ply effact ram dead free deem in a tour cutoff point am cad d4 dipoff ash glue f5 I'm afraid act lickoff 37...Kf5 free envision try evermore lance eedjut good game thod f5 have energy in spades feels fangs very d5 much fades ash a belt drive king f5 bade fades faith have

frets play flaps fence feats of ever
achievement take door fares again ticket

swipe d6 after minimal fuss it do in dupe f5 at wack float frame terms king ferns.

Will f5 prove to be a trough king farms hank force e2 up d4 fords the river foils the frame flip the script e7 frill d6 fluff a king frees up ply a mind d5 fiefdom in a tour safe effect of feel cog ave ok king feckle chains feckless i feel ash d4 knight wins on the spotter 37...Kd5 rigs delve drawn downs at drive dasher bet d4 candy check dance away dream of a nest infer tile to temple shrine to mate e2 reverse a trend dares to deals drove away dears deems a bet d5 it dints mire quest doors a doosy d6 in e3 drips in serve fleed it edge in a d4 mate freed it on defeat up have fared it ok in ogle d5 go clock rook glock a gun g5 ho ever a deep f5 in trouble i reed it ok in ogle flute am beck in call eg a free bit ok in over.

Jan-02-15  TheaN: I find the discussion going into 31....Bxc2?! more interesting than the puzzle. This move is in fact winning:

If 32.Qa7+ Rb7 (missed by user <consul>) wins, as it keeps the threats alive and the white queen is en prise. After the 'best' 32.Bxf8 Be4 white can't defend mate in a sensible manner, and 32.Kxc2 Bxh6 is equally as crushing.

Interestingly, if Black does decide to move the king to e6; 32.Qa7+ Ke6? it leads to a similar move as in the puzzle:


click for larger view

After 33.Nf4+! (though 32.Qxb8 does draw too it has less play for white) white at least draws by exposing the e-file: 33....exf4 34.Qxb8 Bxh6 35.Qg8+ Ke5 32.Qxd5+ Kxd5 33.Kxc2 Ke6:


click for larger view

White is up the exchange but has to play carefully to trade his now weak f6-pawn for the d-pawn with 34.Rd1! yet that position is far from over.

Jan-02-15  BOSTER: When white play 23.Nde2 I guess this was idea to support an other knight on c3.

I think this is very popular idea after the game Karpov vs Korchnoi,1974. So, the question is:

Why did Shabalov change his mind and played 29.bxc3,not Nxc3, opening the "b" file ,when his king was on a1.

Certainly, he could lose another pawn,but not the king in couple moves.

Jan-02-15  consul: Thank you <TheaN>, I really missed the ♖b7 move and also the ♘f4.
Jan-02-15  jheiner: I missed the obvious line. Instead followed the immediate check with the R and forcing a fun mating net with a pleasing final move.

38.Rg5+ Ke4 39.Qb7+ Ke3 40.Qb6+ Kd3 41.Qxd6+ Ke3 42.Rxe5+ Be4 43.Qd4+ Kf3 44.Qf2+ Kg4 45.Rg5+ Kh3 46 Nf4#

There are a few variants, but mostly forced. I looked at up to 40.Qb6+ before deciding it was good enough. (It wasn't.)

Jan-02-15
Premium Chessgames Member
  gars: Very beautiful! I did not solve it, but who cares?
Jan-02-15
Premium Chessgames Member
  varishnakov: 38.N-Q4+ PxN 39.R-N5+ K-B5 40.QxP+ K-K6 41.QxP mate

Knight sac that must be accepted because threatens to win queen. Opens position. King chase. Mate.

For me also this seemed easier than the previous this week.

No tricky defensive moves; all forced.

Jan-02-15
Premium Chessgames Member
  Sokrates: The position before the combination almost looks as a constructed problem. The mate combination is beautiful and subtly depending on the pawn on c3. - It's quite amusing to read how some people find it necessary to state how quickly and easily they solved the problem.
Jan-02-15  HowDoesTheHorsieMove: My first Friday success! I missed that the final white move was a capture, having lost track of the pawn, but I moved all the pieces right.
Jan-02-15
Premium Chessgames Member
  patzer2: Played through this game with my five year old grandson, who thoroughly enjoyed it. He especially liked that it was an aggressive all out mating attack on the flanks by both the WGM and GM.

When we got to the puzzle solution position (38. Nd4+), we fast forwarded to the end of the combination to 40...Ke3 where I let him find the mate-in-one with 41. Qxd4#.

From there, we backed it up to mate-in-two (i.e. 40. Qxd6+), mate-in-three (i.e. 39. RN5+) and finally to mate-in-four or win the Queen with 38. Nd4+!

After a few attempts, he understood the full four move combination and declared himself a "super puzzle solver."

Jan-03-15  dfcx: this is way too easy for a "difficult" solution. Black is threatening mate, so white is forced to act! 38.Nd4+ exd4 (otherwise loses the queen).
39.Rg5+ Kf4
40.Qxd6+ Ke3/Ke4
41.Qxd4#
Jan-03-15  stst: Try

38.Nd4+ exd4 (else if K flees, N takes Q and Black has no play at all.) 39. Rg5+ Kf4 (forced)
40. Qxd6+ Ke4/e5
41. Qxd4#

not sure if I missed anything....

Jan-03-15  stst: my typo for

40.......Ke4/e3

thx

Jan-03-15
Premium Chessgames Member
  An Englishman: Good Evening: <thegoodanarchist>, no, but Ulan Bator has always been one of my favorite place names.
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