Curt Hansen vs Otto Borik (1998)

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Curt Hansen vs Otto Borik
Bundesliga (1998/99), GER, rd 3, Nov-21
Semi-Slav Defense: Meran Variation (D47) · 1-0

ANALYSIS [x]

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< Earlier Kibitzing · PAGE 2 OF 2 · Later Kibitzing>
Dec-14-12		M.Hassan: "Difficult" White to play 23.? They are equal- White has a Bishop for a Knight. A Bishop sac can initiate attack: 23.Bxh7+ Kxh7 24.Qh5+ Kg8 25.fxe5 This move opens up the line of action of two Rooks that are very necessary now: 24...........g6 25.Rg4 Nxe5 26.Rxf7 Kxf7 27.Qh7+ Kf8 28.Rxg6 <if...Nxg6 29.Qg7#> 28..........Qd7 29.Rg8# I think this must be it.

Dec-14-12		Djoker: What is wrong with this line? 23.Bxh7 Kxh7 24.Qh5+ Kg8 25.fxe5 Nxe5 26.Rh4 f6 Did white go wrong somewhere in this line? or am i not seeing something after these moves.

Dec-14-12		rilkefan: <Djoker>, on move 26 white takes the knight and then takes on f7, and Rh4 picks up Q for R - with continued mate threats (or a pawn storm, depending how black takes on e5) after Rf5.

Dec-14-12		C4gambit: ah ... almost there! Got the basic idea, saw that fxe frees the c4 rook to move sideways, but missed that it also frees the other rook to go upwards!

Dec-14-12		uldinch: this one rather belonged on tuesday, i.e. after the first three quite obvious correct moves the black are rendered defenceless

Dec-14-12		Abdel Irada: <<•>Rank and file<•>> In this puzzle position, we find White with active pieces and much pressure against the black kingside. But adding more pressure appears to give time for defense, so we must consider breaking through with a sacrifice. Fortunately, there's a stock sac right at hand: <<•>23. Bxh7†!...> Now, Black can decline this offer, but this is another case where I don't propose to examine such lines in depth. It is enough that we have won a pawn and weakened the enemy kingside; converting those advantages is a story for someone else to tell. I will assume the sac is accepted. <<•>23. ...Kxh7 24. Qh5†, Kg8 25. fxe5...> With this single pawn capture, White opens a file for one rook (incorporating a deadly threat against f7) and a rank for the other. Now the storm breaks in earnest. Now comes the defender to the first crossroads: Black has three reasonable options. <(1) 25. ...Nxe5 26. Bxe5, f6> Others: (a) 26. ...g6??; 27. Qh8#. (b) 26. ...B/Rxe5?; 27. Qxf7†, Kh7; 28. Rh4†, Qxh4; 29. gxh4 . <27. Bxf6!, Qc7> If 27. ...gxf6?!; 28. Qg6†, Kf8 (28. ...Kh8??; 29. Rh4#); 29. Rxf6†, Qxf6; 30. Qxf6†, Kg8; 31. Rg4†, Kh7; 32. Qg7#. <28. Rh4, gxf6 29. Qh8†, Kf7 30. Qxf6†, Kg8 31. Rh8#> (Also insufficient is 28. ...Rxe3; 29. Qh8†, Kf7; 30. Qxg7†, Ke8; 31. Rh8†, Bf8; 32. Rxf8#.) <(2) 25. ...g6 26. Rg4, Nxe5 27. Bxe5...> Alternatives: <(2.1) 27. ...Rxe5 28. Rxg6†, Kf8> On 28. ...fxg6?; 29. Qxg6†, Kh8; 30. Rf7 . <29. Qh7 > No defense works: (a) 29. ...f6/f5??; 30. Rg8#. (b) 29. ...Q/Re7??; 30. Rg8#. (c) 29. ...R/Qc7; 30. Rg8†, Ke7; 31. Qxf7#. <(2.2) 27. ...Bxe5 28. Rxf7!, Kxf7> Or 28. ...Bg7; 29. Rxg7†, Kxg7; 30. Qxg6†, Kf8; 31. Rf4†, Ke7; 32. Rf7#. <29. Qxg6†, Kf8> Or 29. ...Ke7; 30. Qe6†, Kf8; 31. Rg8#. <30. Qg8†, Ke7 31. Qe6†, Kf8 32. Rg8#> For the moment, I'm passing over lines in which Black doesn't recapture on e5, since the bishop on b2 then becomes too much of a menace. Provisionally, then, this line also fails. <(3) 25. ...Be7 26. Qxf7†, Kh8 27. e6 > The threat is mate on g7, and there is no adequate defense: (a) 27. ...Rg8??; 28. Qh5#. (b) 27. ...Nf6; 28. Rh4†, Nh7; 29. Qxg7#. (c) 27. ...Bf6; 28. Rh4†!, Bxh4; 29. Qxg7#. (d) 27. ...Bf8; 28. Rf5! 1-0. So far, Black's best chances seem to lie in variation (1), note (b), where he at least escapes mate; however, in all cases the sudden introduction of both of White's rooks with 25. fxe5 creates too many threats to parry.

Dec-14-12		morfishine: White to move, material even (I counted twice <Abdel>!). White's pieces are much more aggressively placed than Black's: Besides having both Bishops pointed at the Black Kingside, the "quiet" rook on <c4> is poised to shift laterally to <h4> after a timely <fxe5>; a move which also opens the f-file for the other rook I am looking at 1 candidate: (1) 23.Bxh7+ forcing (1) <23.Bxh7+ Kxh7 24.Qh5+ Kg8 25.fxe5> Threatens 26.Qxf7+, 26.Rh4, 26.exd6 & 26.e6; suffice it to say, the position is fluid Its hard to find a good move for Black; 25...Bxe5 & 25...Rxe5 allow 26.Qxf7+ followed by 27.Rh4; & 25...Nxe5 26.Bxe5 Rxe5 27.Qxf7+ <25...Qe7> Black must prevent 26.Qxf7+ <26.Rcf4 Rf8 27.Rh4 Qxh4 28.gxh4> click for larger view ********** As usual for me, I missed better moves for the losing side, namely <25...g6> <27.Rxf7> was a wonderful shot by White; and as weird as this may sound, I only could've found this move if I would've played better for Black!

Dec-14-12		Razgriz: Hmm, bishop sacrifice to lure the king out then check with queen. After that open the f-file to strengthen the attack. Pin the pawn on the g file if in case g6 is played. What a great attack.

Dec-14-12		agb2002: White has the bishop pair for a bishop and a knight. The black castle looks poorly defended. This suggests 23.fxe5, opening the f-file and the fourth rank to incorporate the rooks : A) 23... Nxe5 24.Bxe5 Bxe5 25.Bxc8 + - [R vs B]. B) 23... Bxe5 24.Bxh7+ B.1) 24... Kxh7 25.Qh5+ Kg8 26.Qxf7+ Kh8 (26... Kh7 27.Rf5 Nf6 28.Rh4+ Nh5 29.Rfxh5#) 27.Rf5 (27.Rh4+ Qxh4 28.gxh4 Bxb2 29.Qxd7 looks much slower) 27... Nf8 (27... g6 28.Qxg6 + -) 28.Rh5+ Nh7 29.Qg6 + -. B.2) 24... Kf8 25.Qa1 looks good for White. For example, 25... Bxb2 26.Qxb2 Rxe3 27.Qf2 Re7 (27... Qe7 28.Bf5 Re2 29.Qf3 Re3 30.Qf4 Rd8 31.Be6) 28.Rf4 Nf6 29.g4, etc. B.3) 24... Kh8 25.Rh4 B.3.a) 25... Bxb2 26.Be4+ (26.Bg6+ Qxh4 27.gxh4 fxg6, unclear) 26... Kg8 27.Rh8+ Kxh8 28.Qh5+ Kg8 29.Qxf7+ Kh7(8) 30.Qh5+ Kg8 31.Qh7#. B.3.b) 25... Bf6 26.Bxf6 Nxf6 27.Bf5+ Kg8 28.Bxc8 + - [R vs N]. B.3.c) 25... g6 26.Bxg6+ and mate soon. B.3.d) 25... Qxh4 26.gxh4 Bxb2 (26... Kxh7 27.Qh5+ Kg8 28.Qxf7+ Kh7(8) 29.Qxd7 Bxb2 30.Qh3+ Kg8 31.d6 + -) 27.Bf5 Rcd8 28.Qh5+ Kg8 29.Bh7+ and mate soon.

Dec-14-12		BOSTER: <Abdel Irada> <I will assume the sacr. is accepted>. I will not. After 23...Kf8 white has no any brillance in attack.

Dec-14-12		chrisowen: Ah attack me tallyin pop goes the weasel dominated of course never turn down bishop pawn grab in cot 23.Bxh7+ kite fly by knightd7 out of the question leg in bishop slake your thirst h7 opens all sorts of doors in bad find to cleanse now in kingxh7 shaggy you lavish in pile up ride a scan boom 24.Qh5+ to the nth degree doom for king got narrowed in.

Dec-14-12		chrisowen: Encouraged to take bone 24...Kg8 cut f4 loose now the firework start earnest in feel white has right rookc4 fade away you g4 log g6? true delight in what a turkey mate again beckons to binded 26.rg4 nxe5 heading arose no cake in walk smart rook f1 tangle f7 black is obliege e5 night evermore finalise next in f7 l0 win get one idea now in ghosting along good game nincompoop rooke8 allows right in do I ke a furnish gloom in difficult it off in dervish bishop in 7h!

Dec-14-12		kevin86: The attack begins with a bishop sac and then the heavy pieces come in for the kill.

Dec-14-12		James D Flynn: Material is equal but White has 2 Bs for B and N more space . Whites pieces are directed at the K-side ad the h7 and f7 pawns are defended only by the K. The common theme of Bxh7+ Kxh7 and Qh5+ comes into consideration.: 23.Bxh7 Kxh7 24.Qh5+ Kg8 25.fxe5 Nxe5 26.Bxe5(now if Black retakes White threatens Qxf7+ followed by Rh4+ and Qxh4 losing Q for R is forced leaving White the advantage of Q and 2 pawns for B and R and if he defends f7 by Rf8 27.Bxg7 Kxg7 28.Rg4+ Qg5 29.Rxg5#). Black can try the intermezzo 25…. g6 26.Rg4(not Qh6 Bxe5 27.Bxe5(not 27.Rh4 Qxh4 28.gxh4 Bxb2 and Black has 2 Bs and a R for his Q) Rxe5 28.Rh4 Rh5 29.Rxh5 gxh5 30.Rf5 Nf8 31.Rh5 Ng6 32.Qh7+ Kf8 33.Rf5 Qe2 34.Qxg6 Qxe3+ 35.Kg2 Q2+ 36.Kh3(and Black has run out of checks and must defend f7 ) Qe8 37.d6 and there is no defense to Qh6+ followed by Rg5#)Nxe5(White threatened 37.Rxg6+ fxg6 38.Qxg6+ Kh8 39.Rf7 and mate on g7 or h7)27.Bxe5 Bxe5 28.Rxg6+ fxg6 29.Qxg6+ Bg7 30.Rf7 and the only defense is Qf6 31.Rxf6 Re7 32.d6 Rd7 33.Re6 Rf7 34.Re7 Rf8 35.Rxf7 Rxf7 36.d7 Rxd7 37.Qe8+ Kh7 38,Qxd7 and White has Q for B with an easy win.

Dec-14-12		Kikoman: White starts with a ♗ sac, ♗xh7+! and killing attack follows. Kihx3

Dec-14-12		Patriot: I figured the game line but considered 26.Qf3 as possibly better than 26.Rg4 but I didn't look at it too much after that.

Dec-14-12		Patriot: <<BOSTER>: <Abdel Irada> <I will assume the sacr. is accepted>. I will not. After 23...Kf8 white has no any brillance in attack.> If you want to consider 23...Kf8 as a puzzle then by all means do so. But it would be a waste of time calculating this as white OTB. It wins a pawn for nothing so the critical test is 23...Kxh7.

Dec-14-12		Conrad93: Difficulty (1-5): 23.Bxh7! (2) 24.Qh4+ (1) 25.fxe5 (3) 26.Rg4! (3) 27.Rxf7 (4) Overall, I would give it 3.2 at best.

Dec-14-12		TheBish: C Hansen vs O Borik, 1998 White to play (23.?) "Difficult" I didn't find this too tough. 23. fxe5 and now: (A) 23...Bxe5 24. Bxh7+! Kxh7 25. Qh5+ Kg8 26. Rh4 g6 27. Qh8+! Bxh8 28. Rxh8#. (B) 23...Nxe5 24. Bxh7+! Kxh7 25. Qh5+ Kg8 26. Bxe5 Rxe5 27. Qxf7+ Kh7 28. Rh4+ Qxh4 (forced) 29. gxh4 and White wins. (C) 23...g6? 24. Bxd7 Qxd7 25. exd6 wins a piece. There are better ways to go for Black (such as declining the bishop and giving up a pawn), but White is better in all lines and should win.

Feb-24-24		al wazir: 27. Bxe5 Bxe5 28. Rxg6+ Kf8 (28...fxg6 29. Qxg6+ Kh8 30. Rf7) 29. Rxf7+ Kxf7 30. Qh7+ Bg7 31. Qxg7#.

Feb-24-24		jffun1958: I saw the obvious 23. Bxh7 with winning advantage for W. But B can decline the sac, and it is harder to continue for W. That is why I think it is a Saturday puzzle. :-)

Feb-24-24		mel gibson: I saw that straight away. Stockfish 16 declines the Bishop and says: 23. Bxh7+ (23. Bxh7+ (1.Bxh7+ Kf8 2.Bf5 Nf6 3.Bxc8 Qxc8 4.fxe5 Bxe5 5.Bd4 Qd8 6.Bxc5+ Kg8 7.d6 Qd7 8.Qf3 Qe6 9.Qf5 Bxd6 10.Qxe6 Rxe6 11.Bb6 Bxg3 12.Bxa5 Rxe3 13.Bxb4 Nd5 14.Bc5 Rxb3 ) +5.35/46 647) score for White +5.35 depth 46. If I force SF to accept the Bishop: 23. Bxh7+ Kxh7 24. Qh5+ (24. Qh5+ (1.Qh5+ Kg8 2.fxe5 Nxe5 3.Bxe5 Rxe5 4.Qxf7+ Kh8 5.Rh4+ Qxh4 6.gxh4 Rd8 7.Qg6 Rxd5 8.Rf7 Rd1+ 9.Kg2 Be5 10.Rf5 R8d2+ 11.Kf3 Rf1+ 12.Ke4 Rxf5 13.Qxf5 Bd6 14.Qf7 Kh7 ) +6.30/44 344) score for White +6.30 depth 44.

Feb-24-24		TheaN: Difficulties are a bit whack this week, this is Saturday? <23.Bxh7+> is obvious, if Black declines White half opens up the h-file and wins a pawn, and if Black accepts <23....Kxh7 24.Qh5+ Kg8 25.fxe5 +-> is forced and the sensible moves. I missed 25....g6, but Rg4 isn't even required: that's mate, but 26.Qf3 +- is also +5ish. Black can't keep protecting Bd6 and f7, so a collapse follows.

Feb-24-24		Allderdice83: After 26 ... Nxe5, White also has 27. Bxe5. Now the best I can see for Black is 27 ... Bxe5 28. Rxg6+ Kf8 29. Qh7 Qd7 30. Qg8+ Ke7 31. Rxf7+ Kd8 32. Rxd7+ Kxd7 33. Qf7+ Re7 34. Qf5+ Kd8 35. Rg8+ Re8 36. Rxe8+ Kxe8 37. Qxc8+ with an easy win. Not as clear as the text, though. 28 ... fxg6 29. Qxg6+ Kh8 30. Rf7 with the threat of Qh7# wins quickly. After 31 ... Qh4 32. gxh4 Rg8 pinning the queen, there is 33. Rh7#.

Feb-24-24		Allderdice83: After 27. Bxe5, a few other possibilities: 27 ... Kf8 28. Qxg6 Qd7 29. Qg7+ Ke7 30. Bf6# 27 ... f6 28. Qxg6+ Kf8 29. Rxf6+ Ke7 30. Rf7# 27 ... f5 28. Qh8+ Kf7 29. Qg7# 27 ... Bxe5 28. Rxg6+ Bg7 29. Rxg7+ Kxg7 30. Rxf7+ Kg8 31. Qh7#

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