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Robert Byrne vs Donald Byrne
United States Championship (1958/59), New York, NY USA, rd 9, Dec-30
King's Indian Defense: Fianchetto. Yugoslav Variation Rare Lines (E64)  ·  0-1

ANALYSIS [x]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Dec-18-23  BxChess: <jerseybob> describes 47...Nf1+ as 'brilliant', which seems to me to rule it out as a Monday puzzle. I guessed it, more in hope than in real expectation.
Dec-18-23  Mayankk: This must be a "spoiler" easy Monday puzzle, designed to teach us that in real world we don't know the difficulty beforehand, or for that matter if a solution is even there.

My try was 47 ... Nxf4 48 Kxg3 Nxh3 49 Kxh3 Rh7+ 50 Kg2 Qg7+ and Black will mate soon. Of course White has to help by playing Kxg3 and Kxh3 but I couldn't think of anything else remotely resembling a Monday sequence

Dec-18-23
Premium Chessgames Member
  An Englishman: Good Evening: Fun fact--neither brother lost to eventual winner Bobby Fischer; both drew.
Dec-18-23  raymondhow: How can that be a Monday puzzle? I went with 47...Qh6 which apparently will lead to a winning advantage, though not as strong as the game move.
Dec-18-23  stacase: I didn't beat my older (by 6 years) brother until I was 26. He's been gone since 2001, I do miss him.
Dec-18-23
Premium Chessgames Member
  HeMateMe: I first beat my older brother at age ten. He then quit playing chess.
Dec-18-23  mel gibson: I knew it was either of 2 good moves:
47. .. Nf1+ or
47. .. Qh6

Stockfish 16 says:

47. .. Nf1+

(47. .. Nf1+ (1. ... Nf1+ 2.Bxf1 Rh7+ 3.Kg1 Qh6 4.Bg2 Qh2+ 5.Kf1 Rh4 6.Ra8+ Kf7 7.Rxa3 Rxf4+ 8.Bf3 Qh1+ 9.Ke2 exf3+ 10.Rxf3 Rxf3 11.Nxf3 Qg2+ 12.Kd1 Qxf3+ 13.Qe2 Qb3+ 14.Qc2 Qxd5+ ) +6.79/39 323)

score for Black +6.79 depth 39.

If I force SF to play the other choice it is still strong:

47. .. Qh6

(47. .. Qh6 48. Qg2 (1.Qg2 Bxd4 2.Bxd4 Ne2 3.Qxe2 Qxh3+ 4.Kxh3 Nxf4+ 5.Kh4 Nxe2 6.Ba1 Nf4 7.Rxa3 Nxd5 8.Rg3+ Kf8 9.Rg1 Rxb5 10.Kg5 f4 11.Kf5 e3 12.Ke4 Ke7 13.Bd4 Nb4 14.Rg7+ Ke6 ) -4.90/45 360)

score for White -4.90 depth 45.

Dec-18-23  catlover: Not a typical Monday puzzle.
Dec-18-23
Premium Chessgames Member
  takebackok: Crazy Monday had too think so much got a headache. 47...Nf1+ 48 Bxf1 Rh7+ easy, after that glad the clock wasn't running. Complicated and confusing number of lines and options. I'm over & out first time for a Monday.
Dec-18-23  saturn2: The Ng3 is attacked so sacrifice it and clear the lines for the heavy pieces appeared as an idea. but i did not work it out in vain search for easy monday moves.
Dec-18-23  BxChess: There was a famous sledge in an Ashes match by an English fielder to the Australian batsman Mark (or perhaps Steve) Waugh: 'At least I'm the best cricketer in my family'.
Dec-18-23
Premium Chessgames Member
  scormus: Interestingly nuanced puzzle, though with every plausable variation favouring B. Wasnt sure between 48 ... Rh7+ and ... Qh6+, but SF gives the nod to ... Rh7+. Even 48 ... Nxf4+?! gives B a clear edge though less decisive. Dare I say wasted as a Monday POTD?
Dec-18-23
Premium Chessgames Member
  chrisowen: Pet its wain quick its hurry its ja v Nf1+ a oh its jah its a fog pug bic Nf1+ cig.
Dec-18-23  TheaN: What kind of Monday is this? This is a Thursday combination at least, Friday even on an easier day. I went with 47....Nxf4? which is not enough after 48.Ne6!.

Not 48.Kxg3? Nxh3 (here I actually envisioned 48....Qg7+? 49.Kxf4 Qe5#, except that it's Qe5+ and after 50.Kd3 Qg3+ Black barely holds) and White can't take on h3 due to Rh7+ and the position crumbles shortly after. Having said that, still complicated enough.

Dec-18-23  actinia: I agree with <TheaN> this is a Thursday/Friday level puzzle if you want to work through 100% of the lines. Yet another confusing and stupid puzzle by the jackass in charge of puzzles of the day over at chessgames.com, where the "solutions" are often incorrect when reviewed by engines
Dec-18-23  TheaN: <actinia> whilst I appreciate it you agree with me, being so harsh to the admins isn't going to change much. CG is by far not the richest chess website and finding the correct difficulty daily isn't an easy job... in fact, they're quite unique in increasing difficulty consistently throughout the week, as it's been since 2004. Dropped the ball on this Monday, @#$% happens, move on to hopefully a bit easier Tuesday.
Dec-18-23
Premium Chessgames Member
  Sally Simpson: I'm with Actina. The Monday Queen sac is tradition. Miss Scarlett has ruined Christmas by picking this one.

I looked....


click for larger view

...and decided as it was Byrne to move I went for Ne6 forking the Queen and Rook.

Dec-18-23
Premium Chessgames Member
  OhioChessFan: Did they mix up a Monday and a Friday puzzle?
Dec-18-23  TrollKing: That was a Monday puzzle? I must have prematurely aged over the weekend...
Dec-18-23  mel gibson: <Dec-18-23 actinia: I agree with <TheaN> this is a Thursday/Friday level puzzle if you want to work through 100% of the lines. Yet another confusing and stupid puzzle by the jackass in charge of puzzles of the day over at chessgames.com, where the "solutions" are often incorrect when reviewed by engines>

What do you want for free?

Each puzzle is a mystery -
sometimes only an engine can tell you the truth.

Dec-18-23  vajeer: Too bad I never get into such chaotic positions in live games myself!
Dec-18-23  goodevans: <mel gibson: ... sometimes only an engine can tell you the truth...>

Oh, that made me giggle. Like you'd ever find some truth without your beloved Stockfish!

Your previous seven posts:

<Dec-17-23 Rublevsky vs E Alekseev, 2006 (replies)

mel gibson: <Does "fishouse" became insane too? LOL> May I suggest that you download the free Arena interface and the free Stockfish 16 software and have a go yourself?

Dec-17-23 Sindarov vs E Postny, 2021 (replies)

mel gibson: That is a medium level puzzle. Stockfish 16 says...

Dec-16-23 Yermolinsky vs Salov, 1997 (replies)

mel gibson: I didn't have a clue what move to play. Stockfish 16 says...

Dec-15-23 Carlsen vs P Maghsoodloo, 2022 (replies)

mel gibson: I thought 25. g6. I considered 25. Bxh7+ but I couldn't see how it would work. Stockfish 16 chose the same ply as in the game..,

Dec-15-23 Bacrot vs Mamedyarov, 2009 (replies)

mel gibson: I chose the first ply within 15 seconds. Stockfish 16 says...

Dec-14-23 C Lutz vs Ftacnik, 2001 (replies)

mel gibson: I didn't long enough to be honest that I saw it all. Stockfish 16 says...

Dec-14-23 E Moradiabadi vs Lenderman, 2023 (replies)

mel gibson: I saw the first ply but was unsure after that. Stockfish 16 says...>

Does Stockfish pay you by the post?

Dec-19-23
Premium Chessgames Member
  perfidious: My eyes glaze over when I see posts from mid-week and later POTD with the implication, if not an outright statement on the lines of:

<Nuthin' to it>

When it is only too apparent that <fishie> or some other silicon assistant came into the reckoning.

Dec-19-23
Premium Chessgames Member
  HeMateMe: I WUZ surprised this was a Monday puzzle. It was a ball breaker.
Dec-20-23
Premium Chessgames Member
  An Englishman: Good Evening: Seems as if we can no longer anticipate easy puzzles on Monday. We'll have to wear our thinking caps every day of the week.
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