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Paul Klemens Seuffert vs Joseph Henry Blackburne
9th DSB Kongress, Leipzig (1894), Leipzig GER, rd 12, Sep-11
Italian Game: Evans Gambit (C51)  ·  0-1

ANALYSIS [x]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 3 ·  Later Kibitzing>
Jan-18-05  SouCapi: What if black tries to double the rooks instead of 29.. ♘f4+ ? For instance 29... ♖h7 30. ♖h1 ♖a-h8, threatening 31...♘f4+. Does anyone care to Fritzalyse, Craftylyse, etc for us?
Jan-18-05
Premium Chessgames Member
  patzer2: <SouCapi> I'll look at it tomorrow with Fritz 8.
Jan-18-05  Saruman: I was pleased to spot Nf4+ immedietly.
Jan-18-05  dbquintillion: within the infinitely dense and microscopically small "space" in which as yet unexplained quantum processes resulted in a big bang, creating the universe, the solution to this puzzle was already contained. in algebraic notation.
Jan-19-05  dbquintillion: in retrospect, i've decided that my recent post was too derivative of johnboy's post on the alavkin v. diu 2002 page so i hereby withdraw my name from competition for the most humorous "how easy was this puzzle" post.
Jan-19-05
Premium Chessgames Member
  patzer2: The puzzle solution 29...Nf4+! initiates a forced defensive combination, since all other options lose. After <29...Rh7>, for example, as requested for analysis by <SouCapi>, play could continue 29...Rh7?? 30. Rh1! Rah8 31. Ne3! Nf8 32. Ng4+ Ke7 33. Rh2 f5 34. exf5 Qxf5 35. Rah1 with a winning pin snaring the trapped Knight for White's win. Fritz 8 analyzes the position after 29...Rh7?? as + 3.25 @ 13 depth for a clear and decisive White advantage.
Jan-19-05  JohnBoy: damn, <db>! I didn't think this was turning into a dismissive humor contest! Sorry if I won. I actually enjoyed your inguana line much more than my own.
Jan-20-05  jirka: I left crafty running analysis for 2 days by mistake (I just left it running), and it's interesting what it thinks now. After 180942779K nodes and looking to depth 21 it gives the situation before move 34 a score of +0.01 and the following best line: 34. ♖f2 ♕g8 35. ♗xb7 a5 36. d4 exd4 37. ♖d1 axb4 38. cxb4 ♕b8 39. ♗c6 ♕xb4 40. ♖xd4 ♕b3 41. ♗xd7 ♕a2+ 42. ♖d2 ♕c4+ 43. ♖d3 ♕a2+ 44. ♖d2
Jan-21-05
Premium Chessgames Member
  patzer2: White's final Blunder was 36. Rxa5??, which allowed the winning 36...Rh1! (with the decisive threat 37...Qg1 ). A better alternative was 36. Nxd6 = with counter chances.
Nov-04-19  Cheapo by the Dozen: Tuesdayish, IMO, but I love Tuesdays.

1. Play the knight fork. Obviously, White must capture.

2. Recapture opening the file. Because of where the pawn winds up, White has limited options in response, all bad.

3. Skewer the White king against the queen.

Nov-04-19  Cheapo by the Dozen: OK. I see that White actually had a draw. Technically, that doesn't matter, since Black's knight was trapped and hence even achieving a draw was good. Besides, as the actual game shows, after taking the queen Black had good practical winning chances. :)
Nov-04-19
Premium Chessgames Member
  al wazir: Is white so badly off?

After something like 34. Bxb7 Rh2+ 35. Rf2 Rxf2+ 36. Kxf2 Qh5 37. Rg1 Nf8 38. Bxa6 Nh7 39. d4 Ng5 (39...exd4 40. Nxd4) 40. Rxg5 Kxg5 41. Bf1 Qh2+ 42.Bg2. white has a small army of passers on the queen side. Black can hope for nothing better than a draw.

Nov-04-19  saturn2: I saw 29...Nf4+ 30. gxf4 (forced) gxf4+ 31. Kf2 (Ng3 Qxg3#) Rh2+ 32. Ke1 Rxe2+ 33. Kxe2 with black material advantage
Nov-04-19  ACMEKINGKRUSHER: Howdy,
A DISCOVERED CHECK is Abbreviated Dis Ch! AKK
Nov-04-19
Premium Chessgames Member
  steinitzfan: According to Stockbridge, White's game took a nose dive at the very end with Rxa5.
Nov-04-19
Premium Chessgames Member
  malt: 29...N:f4 30.gf4 gf4+ 31.Kf2 Rh2+ 32.Ke1 R:e2+
Nov-04-19  goodevans: What does black have after <34.Bxb7>? I can't see how black gains any advantage after that.

Strange puzzle for a Monday, this. Black has the opportunity with 29...Nf4+ to trade to a <roughly equal position> and you have to work out that not doing this leaves white with the upper hand. Bit of a big ask for a Monday.

Nov-04-19  TheaN: I guess the entirely forced <29....Nf4+! 30.gxf4 gxf4+ 31.Kf2 (Ng3?? Qxg3#) Rh2+ 32.Ke1 Rxe2+ 33.Kxe2 Rh8=> leaves Black with a material advantage, but it's clear from the resulting position that converting this is tricky, apparently theoretically impossible. The White pieces are all positioned quite fine, he'll just have to solve the rook placements and should be doing alright. Perhaps the fact that he thought he was winning after 29.Kg2 made him slip up later but we'll never know.
Nov-04-19  zb2cr: This is odd, for a Monday. 29. ... Nf4+ seems to be Black's only try--everything else loses. But Black doesn't get a winning advantage--White has R+B vs. Q and can cover most of Black's attempts to force the position open.

So, 29. ... Nf4+ is in fact the best move available wo Black, but none of us is used to seeing a forced combination 4 full moves deep, leading to an unclear position, for a Monday.

Nov-04-19  scormus: Well, quite a bit more difficult than I expected. 29 .... Nf4+ looked like the move, in fact very promising .... but then I couldn't find a clear win. Only when I read the posts I learned there wasn't one. Well not unless W blunders! An unusual Monday :
Nov-04-19  mel gibson: Not much of an easy puzzle -
there's less than a pawn in it:

Stockfish 10 says:

29... Nf4+

(29. .. Nf4+ (♘h3-f4+ g3xf4 g5xf4+
♔g2-f2 ♖h8-h2+ ♔f2-e1 ♖a8-h8 ♖a1-a2 ♖h2xe2+ ♖a2xe2 ♘d7-b6 ♗d5xb7 ♘b6xa4 ♔e1-d2 ♖h8-h3 ♗b7xa6 ♕g6-h5 ♖e2-f2 ♖h3-h2 ♗a6-b5 ♘a4-b6 d3-d4 ♖h2xf2+ ♖f1xf2 ♕h5-h1 d4xe5+ d6xe5 ♔d2-c2 ♕h1-a1 ♖f2-d2 ♕a1-a2+ ♔c2-c1 ♕a2-b3 ♖d2-d6+ ♔f6-g5 ♖d6-c6 ♘b6-a4 ♗b5xa4 ♕b3xa4 ♖c6-c5 ♕a4-a1+ ♔c1-c2 ♕a1-f1 ♖c5xe5 ♔g5-f6 ♖e5-c5 ♕f1xf3 ♘f5-d4 ♕f3xe4+ ♔c2-d2 ♔f6-g6 ♖c5-f5 f7-f6 b4-b5 ♔g6-f7 b5-b6 f4-f3 ♖f5xf3 ♕e4-b1 ♖f3-f5 ♕b1xb6 ♔d2-c2 ♔f7-e8 ♔c2-d3 ♕b6-b1+ ♔d3-e3) +0.80/42 355)

score for Black +0.80 depth 42

Nov-04-19  landshark: Interesting that the position that results after correctly solving today's puzzle is a draw with correct play. Which confirmed my suspicions - without delving too deep into it after winning the Q for R+N it felt to me that White's excellently placed minor pieces would be excellent compensation for the <somewhat minor> material loss
Nov-04-19
Premium Chessgames Member
  agb2002: Black has a knight for a bishop and a pawn.

White is about to play Rh1.

Black can win decisive material with 29... Nf4+ 30.gxf4 gxf4+ 31.Kf2 (31.Ng3 Qxg3#) 31... Rh2+ 32.Ke1:

A) 32... Rxe2+ 33.Kxe2 Rh8

A.1) 34.Rg1 Rh2+ 35.Kf1 Qh5 with the threat Qxf3+.

A.2) 34.Rh1 Qg2+ and mate next.

A.3) 34.Bxb7 Rh2+ 35.Rf2 (else 35... Qg2 wins) 35... Qh5 36.Rg1 (36.Bxa6 Rxf2+ 37.Kxf2 Qh2+ 38.Ke(f)1 Qh1+ wins) unclear.

B) 32... Rah8

B.1) 33.Qd1 Qg2 34.d4 Rh1

B.1.a) 35.Bc4 R8h2 36.Qe2 Rxf1+ wins (37.Qxf1 Qd2#).

B.1.b) 35.Qe2(d3) Rxf1+ 36.Qxf1 Qxf1+ 37.Kxf1 Rh1+ wins decisive material.

B.2) 33.Qxh2 Rxh2, followed by Qg2, wins (34.Rf2 Rxf2 35.Kxf2 Qh2+ 36.Ke(f)1 Qh1+).

B.3) 33.Rf2 Rh1+ 34.Rf1 (34.Qf1 Rxf1+ 35.Rxf1 Qg2 36.Rf2 Rh1+ 37.Ke2 Qxf2+ 38.Kxf2 Rxa1 - + [r vs B]) 34... R8h2

B.3.a) 35.Qd1 Qg2 wins.

B.3.b) 35.Rxh1 Rxe2+ 36.Kxe2 (36.Kd1 Qg2 37.Rh6+ Kg5 wins) 36... Qg2+ 37.Kd(e)1 Qxh1+ wins.

B.3.c) 35.Ra2 Rxf1+ 36.Qxf1 (36.Kxf1 Rh1+ 37.Kf2 Qg1#) 36... Rxa2 wins decisive material.

-----

32... Rah8 seems to be preferable.

Nov-04-19  goodevans: <agb2002> I quite like <32...Rah8> which I must admit I hadn't considered.

If white tries to save his Q he's lost but if he just carries on with <33.Bxb7> then I don't think black has anything better than <33...Rxe2+ 34.Kxe2 Rh2+> transposing to your line <A.3>.

Nov-04-19  AlicesKnight: Found the break-in easily enough, opening the lines for Q and R. A bit lengthy for usual Monday - and not as clear-cut; why does White abandon his back rank with the a5 manoeuvre?
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