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Julian M Hodgson vs Michael Adams
Hoogovens (1993), Wijk aan Zee NED, rd 1, Jan-16
Trompowsky Attack: Raptor Variation (A45)  ·  1-0

ANALYSIS [x]

FEN COPIED

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Given 12 times; par: 68 [what's this?]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Jan-01-21  morfishine: Monday on a Friday, I'll take it
Jan-01-21  Brenin: At the end, if 48 ... Ke7 then 49 Rg8, 50 Rg7+ and 51 Nxf6+ wins. If 48 ... Rb8 then 49 Rxa7+ R2b7 50 Rxb7+ Rxb7 51 Nd8+ wins the R. If 48 ... Rd7 then 49 Nh6+ Ke7 50 Ng8+ Kf7 51 Rf8 is a rather pretty mate.

Happy 43 x 47 to you all!

Jan-01-21  AlicesKnight: The break-in with 43.Rh8+ Bxh8; 44.Rxh8+ etc. was not too difficult, the conclusive win demonstration was a little more so. <Everett> is right about the N v B situation; fascinating.
Jan-01-21  awfulhangover: 43.Nh6+ my choice. Cant see what is wrong.
Jan-01-21  goodevans: <FSR> First to solve but were you still celebrating the passing of 2020 when you wrote that?

We can overlook <43...Kf7 44.Nh6+> even though <43...Kf7 44.Rh7> is quicker but <44...Kf7 45.Rf8+?> is definitely suboptimal since <44...Kf7 45.Rh7+> is mate next move.

Not your usual standard for sure.

Jan-01-21
Premium Chessgames Member
  steinitzfan: I didn't get it but it but it seems like it should have been easier than it was when you see that White starts out by winning material instead of sacrificing. I was still surprised to see Black's game cave in so quickly. Those two strongly placed knights against a passive took should have been a clue.
Jan-01-21
Premium Chessgames Member
  steinitzfan: That was "passive rook" - not "passive took."
Jan-01-21
Premium Chessgames Member
  chrisowen: Us in favor rh8+ gently axiom jewel ah goody wrong favor iv with photon beam juvenile jumpy rook i vant binary bulldog deckz its faery foots i vant band come with iv goalpost totup flung mack hobble each it wits doler favor rh8+ over?
Jan-01-21  Brenin: After the appropriately-named <awfulhangover>'s 43 Nh6+ Bxh6 44 Rxh6 Rh7 45 Rxh7 Rxh7 46 Rxh7 Kxh7 47 Ne7 White has a clear advantage, e.g. 47 ... Bxa4 48 Nc8 and 49 Nxd6, with a protected passed pawn, but he still has work to do. The line played, retaining most of White's better-placed pieces, is much more decisive.
Jan-01-21
Premium Chessgames Member
  Who is me: QUESTION why did black quit ??
A BEGINNER WANTS 2 KNOW!
Jan-01-21  King.Arthur.Brazil: Even though I found the little forced sequence 44.♖h8+ ♗xh8 45.♖x8+ ♔g7 (What else can both sides play? White must go into this and Black cannot avoid it.) However, I was a little sleepy too, that's why I suppose get more time to see the disaster to Black comming from 48...♖d7 49. ♘h6+ ♔e7 50. ♘g8+ ♔f7 51. ♖f8#. It is a unusual and beautiful check-mate net, with the ♘g8 and ♖f8. Nice game!
Jan-01-21
Premium Chessgames Member
  thegoodanarchist: At first I thought this was too easy for Friday, but then I realized my solution was wrong.
Jan-01-21  Cheapo by the Dozen: The first couple of moves were obviously advantageous. I didn't see Nf8 at all, but the the thinks the more straightforward Re6 wins big too.
Jan-01-21  Cellist: I thought both 43. Rh8+ and 43. Nh6+ win and opted for Nh6+, which is not as strong as the game line. It does also win because the B on d8 (after a pretty much forced exchange of Rs) is not able to protect most of Black's pawns.
Jan-01-21
Premium Chessgames Member
  agb2002: White has both knights for the bishop pair.

Black threatens Bxa4.

White can win some material with 43.Rh8+ Bxh8 (43... Kf7 44.R1h7 and 45.Rf8#) 44.Rxh8+ Kf7 45.Rf8+ Kg7 46.Rxe8:

A) 46... Rxb2 47.Nf8 (47.Rf8 Rf7) looks very good for White. For example, 47... Rf7 48.Ne6+ Kh7 49.Rc8 followed by Rxc4.

B) 46... Kf7 47.Rf8+ Kg7 48.Nxf6 wins decisive material (48... Rf7 49.Ne8+ Kh6 -49... Kh7 50.Rh8#- 50.Rxf7 Rxf7 51.Nxd6).

Jan-01-21
Premium Chessgames Member
  agb2002: I missed a mate in two after 44... Kf7: 45.Rh7+ Kg8 46.Nxf6(h6)#.
Jan-01-21  goodevans: <Who is me: QUESTION why did black quit ?? A BEGINNER WANTS 2 KNOW!>

No need to shout. Some of us are still a bit fragile.

Material may be roughly equal but black's K is in mortal danger whilst white's is perfectly safe.

The main threat is 49.Nh6+ Ke7 50.Ng8+ Kf7 51.Rf8#. Black has a couple of ways to avoid that but they both end up losing quite quickly:

48...Rb8 49.Rxa7+ R2b7 50.Rxb7+ Rxb7 51.Nd8+ and 52.Nxb7 is overwhelming;

48...Ke7 49.Rg8 Kd7 50.Nxf6+ Ke7 51.Ng4 followed by f6 and Rd8# (black can only delay this with 'spite checks' but can't stop it).

Jan-01-21  Diana Fernanda: playing carballo h6 also wins, white has more than one option to succeed, I think, finally, happy new year friends 64 crazy boxes.
Jan-01-21  goodevans: l forgot to mention that after 48...Ke7 49.Rg8 black has to play 49...Kd7 to avoid 50.Rg7+ Ke8 51.Nxf6#.
Jan-01-21  Brenin: <Who is me>: It's sometimes useful to check earlier postings. It's not obvious, but my first one today gave an answer to your question.
Jan-01-21
Premium Chessgames Member
  Who is me: thank you goodevans !
Jan-01-21
Premium Chessgames Member
  AylerKupp: <<Brenin> After the appropriately-named <awfulhangover>'s 43 Nh6+ Bxh6 44 Rxh6 Rh7 45 Rxh7 Rxh7 46 Rxh7 Kxh7 47 Ne7 White has a clear advantage>

You're right, although I think it was <Walter Glattke> who suggested 43.Nh6+ first. I originally also thought of 43.Rh8+ first but couldn't see a forced win. I then tried 43.Nh6+ and thought that this was much quicker after 43...Bxh6 44.Rxh6 and then if <Walter Glattke>'s 44...Bxg6 not 45.Rxg6+ but 45.fxg6 and mate in 2 will seemingly occur. But Black can still play 45...Re7 and delay the inevitable mate much longer.


click for larger view

But I overlooked your 44...Rh7 when there is no forced mate. So the given solution, 43.Rh8+ is still probably still the best.

Then, out of curiosity and because I'm a chess engine geek, I had Stockfish 12 analyze the initial position with (eventually) MPV=30. It seems that almost anything that White plays will win, at least according to Stockfish. At d=44 all the top 24 moves by White had theoretically winning evaluations; i.e. evaluations higher than [+2.00] with the lowest evaluation in Stockfish's top 24 moves being [+4.36] (!)

And even the next top 4 moves had evaluations ~ [0.00], with the 26th best move, 43.Rh6, having an evaluation of [+0.25] and the other 3 an evaluation of [0.00].. So you had to play either Stockfish's "top" 29th and 30th moves, 43.Nf4 ([-2.25]) and 23.Nh4 ([-3.17]) respectively, until Stockfish evaluated the position as theoretically winning for Black.

Perhaps it's just me but I don't consider a POTD as "Difficult" if there were 24 theoretically winning moves and 4 moves that theoretically provided even chances for both sides, at least according to Stockfish. You can almost choose a move at random and White would win, although of course some wins would be faster than others.

So I think it would be more proper to elevate this puzzle's difficulty from "Difficult" to "Insane" and label it "White to play and NOT win". ;-)

Jan-01-21
Premium Chessgames Member
  AylerKupp: <<Diana Fernanda> playing carballo h6 also wins>

Would you call that "Juantorena h6"? Because Alberto Juantorena, the Cuban 400/800 meter winner in the Montreal 1976 Olympics, was known as "El Caballo".

Jan-01-21  waustad: I rejected the correct line because I was looking for something more in the mate now realm. In a real game I might have gone for it, there is no guarantee. Truth be told, I’m a lot better at seeing a future position than I am at evaluating it.
Jan-02-21  waustad: He got to the mating net a few ply beyond what I saw.
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