Weiguo Lin vs Jiangchuan Ye (1998)

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Kibitzing

Weiguo Lin vs Jiangchuan Ye
Beijing Tan Chin Nam cup (1998), CHN, rd 5, Jun-12
Pirc Defense: Classical Variation. Quiet System Czech Defense (B08) · 0-1

ANALYSIS [x]

FEN COPIED

explore this opening	find similar games	4 more W Lin/J Ye games
sac: 42...Nxg3	PGN: download \| view \| print	Help: general \| java-troubleshooting

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< Earlier Kibitzing · PAGE 1 OF 2 · Later Kibitzing>
Nov-29-12		rilkefan: I kept trying to get 42...Qxg3 and 43...f2+ to work but finally decided to play 42...Nxg3 instead. I had considered 42...Kg6 as well. I failed to put the two in sequence though.

Nov-29-12		vinidivici: 44.Re6+ Kh5 0-1 44.Bxf5 Nxf5...0-1 44.fxg3 Qxg3 45.Kf1 Qg2+ 46.Ke1 Qg1+

Nov-29-12		vinidivici: Unique puzzle...not so hard. the fact that f5 bishop protected by knight on g3 and if knight move it will be discovered check. And the fact if white takes the knight with pawn then black Qxg3 is unbearable for white

Nov-29-12		bachbeet: Didn't get it. I think the best move after black moves to h5 to escape check is Ne2++ followed by Qg1# if K moves to f1 (or g2 if white K moves to either h square).

Nov-29-12		scormus: Neat puzzle. After deciding ... Qxg3+ doesnt work I considered was ... Qa5 but it didnt fully convince me. BN is pinned against the R and B so W perhaps felt secure against ... Nxg3. B plays it anyway, ignoring the apparent threats. The counter-thrusts in the following sequence are very cute < 42 ... Rxg3 43 Rxe7+ Kg6 44 Bxf5+ Nxf5+ 45 Kf1 Qg2+ 46 Ke1 Qg1+ 0-1>

Nov-29-12		vinidivici: i will elaborate to you all A.44.Re6+ Kh5 then 45.Bxf5 Nxf5+ ---0-1 45.fxg3 Qxg3+ ...0-1 45.Rxh6(really???) Kxh6...0-1 45.Rxd6 Ne2+...0-1 B.44.Bxf5 Nxf5+...0-1 C.44.fxg3 Qxg3+ 45.Kf1 Qg2+ 46.Ke1 Qg1+

Nov-29-12		Bartimaeus: Good puzzle, saw Nxg3 but didn't see the complete continuation. <<vinidivici> C.44.fxg3 Qxg3+ 45.Kf1 Qg2+ 46.Ke1 Qg1+> I think for 46. Ke1, f2+ is a better response than Qg1+ as after Qg1+ white king can get away from the back rank and the result is unclear.

Nov-29-12		M.Hassan: "Medium" Black to play 42...? Black has a Knight for 2 pawns. Black opens the g file which will be the beginning of trouble for White King 42.............Nxg3 <if 43.fxg3 Qxg3+ 44.Kf1 Qg2#> 43.Rxe7+ Kg6 44.fxg3 It is plausible now since Rook is gone and White King will have room to move. 44...........Qxg3+ 45.Kf1 Qg2+ 46.Ke1 f2+ 47.Kd1 f1=Q+ 48.Bxf1 Qxf1+ 49.Kd2 Qxb1 And White has to continue a Queenless game 0-1 45.

Nov-29-12		agb2002: Black has a knight for two pawns. White threatens 43.Bxe4. My initial idea was 42... Qxg3+ 43.fxg3 f2+ but after 44.Kg2 Black looks bad. Another option is 42... Nxg3: A) 43.fxg3 Qxg3+ and mate next. B) 43.Bxf5+ Nxf5+ and mate next. C) 43.Rxe7+ Kg6 C.1) 44.Bxf5+ Nxf5+ 45.Kf1 Qg2+ 46.Ke1 Qg1+ 47.Kd2 Qxb1, etc. C.2) 44.Re6+ Kh5 (and White looks defenseless against 45... Ne2+ 46.Kf1 Qg1#) C.2.a) 45.Kh2 Qh4+ 46.Kg1 Qh1#. C.2.b) 45.fxg3 Qxg3+ 46.Kf1 Bh3#.

Nov-29-12		vinidivici: <Bartimaeus: I think for 46. Ke1, f2+ is a better > Yes, my bad. Done it in rush. I missed 46...f2+.

Nov-29-12		Abdel Irada: <<•>Life, the Universe and Everything<•>> On asking myself what move it was, I found the answer was in fact Forty-Two, whereupon I had to find out what the question was. However, I soon realized I wasn't in a Douglas Adams story: The question is, what is Black to do to win on this forty-second move (even if it actually takes more than forty seconds)? And having proposed the Answer to that question, it remained to try to falsify it, or, failing to do that, to post it as my solution. Momentarily worried by all the pins on the knight, I was first tempted by 42. ...Qxg3†?, but after 43. fxg3, f2†; 44. Kg2 I could find no adequate follow-up. Then I knew the Answer must demand moving the knight after all. <<•>42. ...Nxg3!> The threat is 43. ...Ne2†† followed by mate on g3. Here White has four replies to consider, the last of which will constitute the main line. <(1) 43. fxg3?, Qxg3† 44. Kf1/Kh1, Qg2#> <(2) 43. Bxf5†?, Nxf5† 44. 44. Kf1/Kh1/Kh2, Qg2#> <(3) 43. Kh2?, Qh4† 44. Kg1, Qh1#> <<•>(4) 43. Rxe7†, Kg6!> Taking time to recapture would also take the queen off g5, which would be fatal to Black's chances. And retreating to the back rank would allow 44. Qb8† followed by mate. <<•>44. Re6†...> Of course not 44. Bxf5†?, Nxf5†; 45. Kf1 (45. Kh1/Kh2??, Qg2#), Qg2†; 46. Ke1, Qg1†; 47. Kd2, Qxb1 . <<•>44. ...Kh5 45. fxg3 ...> Others: (a) 45. Kh2?, Qh4†, mating as in line (3). (b) 45. Bxf5?, Ne2†† and mate next move. (c) 45. Rxh6†, Kxh6 and nothing has changed since White has no other checks. <<•>45. ...Qxg3† 46. Kf1, Qg2† 47. Ke1, f2† 48. Kd1...> On 48. Ke2/Kd2?, f1=Q† and the extra queen wins. <<•>48. ...f1=Q† 49. Bxf1...> If 49. Re1, Qxd3† . <<•>49. ...Qxf1† 50. Re1, Qf3† 51. Kc1, Qc3† 52. Kd1, Bxb1 > With queen and bishop vs. rook and pawn, Black will win without undue exertion. The moral: Forty-Two may be the Answer, but it is not a complete answer. To find that, one must know the entire Question. In this case, that question is answered by a paradoxical-looking knight sacrifice that loses a rook but gains a queen.

Nov-29-12		Abdel Irada: Apparently Mr. Weiguo was convinced after 43. ...Kg6.

Nov-29-12		gofer: Black is a whole knight up, so the two pawn deficit doesn't mean much... <42 ... Nxg3> 43 Bxf5+ Nxf5+ mating 43 fxg3 Qxg3+ mating 43 Kh2 Qh4+ mating Black also has the massive threat of 43 ... Ne2++ to which there is no defense, so white must attack! <43 Rxe7+ Kg6!> <HMFGOOT!!!> Black gives up a whole rook to maintain the mate threat with Ne2++! and at the very least black has a winning combination if white ever takes on g3! 1 fxg3 Qxg3+ 2 Kf1 Qg2+ 3 Ke1 f2+ 4 Kd1 f1=Q+ 5 Bxf1 Qxf1+ 6 Re1 Qf3+ So the only question is how does white try to hold onto this mess. 44 Bxf5+ Nxf5+ 45 Kf1 Qg2+ 46 Ke1 Qg1/Qh1 winning the queen 44 Rd6+ Kh5! 44 Rg7+ Kxg7 45 Qb7+ Kg6 It all looks very miserable! ~~~ Yep...

Nov-29-12		HeMateMe: 5 seconds. Nothing more sexy than a discovered check/double check threat.

Nov-29-12		Lykos: 44. Qc2 seems to me most hopeful for white

Nov-29-12		sfm: 35.-,e4 36.Nxe4! But 39.Rxb7?? Why did White not play 39.BxN ? Was there some nasty answer? Or did he simply think that the b-pawn was a free additional grab, missing the trivial sac on g3? As far as I can see, White is the much happier player after 39.BxN, Black's position is falling apart, with open kingside, a nasty issue on b7 and a pawn behind. Am I right?

Nov-29-12		whiteshark: <42...Nxg3> and white is in the choke hold

Nov-29-12		Djoker: <Abdel> 45. fxg3 Qxg3+ 46. Kf1 Bh3#. It is important to first remove the bishop.

Nov-29-12		Bengambit: 42...Qh5 then Qh3

Nov-29-12		morfishine: While Black is up a piece, he has only 3 pawns, all isolated. One however is wedged deep at <f3>. This gives Black a target sqiare to force mate: <g2> First, we can discard 42...Qxg3+ 43.fxg3 f2+ due to <44.Kh2>; after 44...fxe1 45.Qxe1 the pressure is relieved since the knight can't check (I spent way too much time looking at this line) Secondly, 42...Nxg3 (threatening a deadly exposed check) wins for Black if 43.fxg3 Qxg3+ 44.King any & 44...Qg2 mate; But fails to 43.Rxe7+ <43...Qxe7?> after 44.Bxf5+ Nxf5 45.Qxf5+ Kg7 46.Qxf3 But what if Black tosses a whole rook with check? Again, 42...Nxg3 43.Rxe7+ <Kg6> 44.Re6+ Kh5 and the threat 45...Ne2+ wins due to 46.Kf1 Qg1 mate or 46.Kh1 Qg2 mate. (or 44.Bxf5+ Nxf5+ 45.Kf1 Qg2+ 46.Ke1 Qg1+ 47.Kd2 Qxb1 winning White's Queen) click for larger view ********** Continuations I overlooked or didn't mention, all losing: (1) 45.fxg3 Qxg3+ 46.Kf1 Bh3 mate (2) 45.Bf1 Ne2+ 46.Kh2 Qh4+ 47.Bh3 Qxh3 mate (or simply 46...Bxb1 which is sort of comical) (3) 45.Qf1 Ne2+ 46.Kh2 Qh4+ 47.Qh3 Qxh3 mate

Nov-29-12		Bartimaeus: <sfm Why did White not play 39.BxN ?> The one line that seems better for black is 39. Bxe4 Rxe4 40. Rxe4 Qg6 41. c5 dxc5 42. Rbc4 Bh3. For white, its certainly not as bad as the game position but black seems to have a better attack.

Nov-29-12		James D Flynn: Black is up a N for 2 pawns but his N on e4 is attacked times and defended twice. It cannot readily mbe moved because dual pin of the R on e7 and the B on f5 both of which are defended only by the Q. black also has some possible mating threats based on his pawn on f3. The N can be defended a third time by either Q g6 or Qg4 both of which abandon the defense of the R on e7. A passive defense like 42.Qg6 doesn’t look promising because White can simply advance his a pawn and force the R to abandon the defense of the N. Black also has the surprising move 42….Qh4 to defend the N because 43.gxh4 Rg7+ leads to mate e.g. 44.Kh1 Nxf2+ 45.Kh2 Rg2# or 44.Kf1 Bh3#. Black can also consider 42…Nxg3 with the threat of double check by Ne2+ and mate by Qg2. The N cannot be taken because 43.fxg3 Qxg3+ allows mate and after 43.Bxf5+ Nxf5+ Black mates by Qg2# . After 42…..Nxg3 43.Rxe7+ the Black K has to find shelter. He cannot move to the back rank because 44.Qb8+ wins What about 43….Kg6? 44.Bxf5+(if Rg7+(if Re6+ Kh5 45.Rh6+ Kxh6 46.Qc1 Ne2+ 47.Kf1 Nxc1 wins) Kxg7 and after Qb7+ or Qb2+ White runs out of checks)Nxf5+ 45.Kf1 Qg2+ 46.Ke1 Qg1+ 47.Kd2 Qxb1 wins.

Nov-29-12		Abdel Irada: < Djoker: <Abdel> 45. fxg3 Qxg3+ 46. Kf1 Bh3#. It is important to first remove the bishop.> I assume you refer to my solution variation (4), because that's the only line I give in which White takes the knight. On that assumption, the bishop on f5 is pinned to the king on g6 and therefore can't go to h3, with mate or otherwise.

Nov-29-12		Bartimaeus: <Abdel: On that assumption, the bishop on f5 is pinned to the king on g6 and therefore can't go to h3, with mate or otherwise.> It seems Djoker's referring to line (4) of yours and the Bishop isn't pinned in this line. 43. Rxe7+ Kg6 44. Re6+ Kh5 45. fxg3 Qxg3+ 46. Kf1 Bh3#. The king isn't on g6 but on h5.

Nov-29-12		Abdel Irada: Good grief. You're right. You refer to the line after the move-pair I failed to insert when looking at the position just now. Apologies, <Djoker>. And good catch, <Bartimaeus>. This would imply that White accelerates the mate by interpolating 44. Re6†, Kh5. The question I'm left with: When does White have a chance to remove the bishop?

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