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Eduard Prandstetter vs Lubomir Ftacnik
Czechoslovak Championship (1986), Prague CSR, rd 6, Jun-??
Sicilian Defense: Scheveningen. Classical Variation (B84)  ·  1-0



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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 3 OF 3 ·  Later Kibitzing>
Feb-15-08  wals: Noting think= what principal variation would fit the strategic demands of the position, What is the most relevant, What move would have black scrambling? Inspect board -
44. Rd8...Qf7 45.Rg8+...Qxg8 46.Nxg8 plausible

PM =
1/2 move right is better than no moves right I guess.

Feb-15-08  wals: Eduard Prandstetter - Lubomir Ftacnik, CSSR (ch) 42/284 1986 0 1

Analysis by Fritz 11: depth 21/40 time 8min27

1. (7.54): 44.Rd4-d8 Qa7-f7 45.Qg4-d4 h6-h5 46.Qd4xc5 Rf5xf6 47.e5xf6+ Qf7xf6 48.Rd8-e8 Kg7-g6 49.Qc5-d6 Qf6-f4+ 50.Qd6xf4 g5xf4 51.Re8xe6+ Kg6-f5 52.Re6-b6 b4-b3 53.Rb6xb3 h5-h4 54.Rb3-b6 Kf5-e5 55.Rb6-b5+

2. (2.31): 44.Qg4-h5 Qa7-f7 45.Qh5-e2 Rf5xf6 46.e5xf6+ Kg7xf6 47.Rd4-c4 Nc5-d7 48.Qe2-d2 Nd7-e5 49.Qd2-f2+ Kf6-g7 50.Qf2xf7+ Ne5xf7 51.Rc4xb4 Kg7-f6 52.Kh2-g3 Nf7-d6 53.Kg3-f3 e6-e5 54.Kf3-e3 Kf6-e6

(, 16.02.2008)

Feb-15-08  newzild: I got this one okay, but it took a good six or seven minutes. I wasted a couple of minutes trying to set up knight forks.
Feb-15-08  jovack: ya, this one wasnt one of the <20 seconds puzzles
Premium Chessgames Member
  johnlspouge: Friday (Difficult): White to play and win

Material: even. The White Nf6 has penetrated the Black K-side, supported by Pe5. The White Qg4 can use the light squares around Kg7 unhindered. The Black Nc5 must prevent Rd4 from penetrating the 7-th rank. The Black Qa7 has a discovered attack through Nc5 on Rd4, and Rf4 threatens Pe5, but ...Rxe5 would block critical escape squares for Kg7, and in some lines, result in White's skewering Qd7. The only Black piece near Kg7 is Rf5, and except for removing the support of Nf6, ...Rxe5 makes Rf5 temporarily unable to contribute to K-side defense.

Candidates (44.): Ne8+, Rd8, Qh5, Nh5+

44.Rd8 (threatening 45.Rg8+ Kf7 46.Qh5+ Ke7 47.Qe8#)

Only one move removes the threat.

44...Rxe5 [Kf7 45.Qh5+]

45.Qd4 (threatening 46.Qxe5 and Nh5++ if Re5 moves)

45...Kxf6 [Qc7 46.Nd8+]

46.Rf8+ Kg7 [Ke7 47.Qd8#]

47.Qxe5+ Kxf8 [Kg6 leads to mate] 48.Qh8+ and skewers the Qa7 next move

Time to peek. Initially, I missed the skewer justifying 46.Rf8+. I will check the kibitzing later, but the initial move is very important and difficult to sort out from the alternatives. I chased down all the dead ends with the heavy pieces, but now I must reward my daughter's patience.

Feb-15-08  zenpharaohs: Oh well. I had 43 Qh5 or 43 Qd1. I never saw 43 Rd8. At least Rybka says I had the second and third best moves. I have missed two in a row now this week.
Feb-16-08  LivBlockade: I considered the solution through 45. Qd4 but did not analyze it far enough. So I chose the line discussed above by <JohnBoy> and <zanshin>. <Preliminary eval (20-ply) shows 44.Qh5 is Rybka's 2nd choice after 44. Rd8. It is answered by 44...Qf7, preventing your immediate Ng4.> I planned 44. Qh5 Qf7; 45. Ne8+ Kf8; 46. Qxf7+ Kxf7; 47. Nd6+ followed by Nxf5 and Rxb4 which seemed like an easily won endgame.
Feb-21-08  patzer2: For the Feb 16, 2008 puzzle solution, White's 44. Rd8!! sets up a winning attack against Black's helpless King.
Nov-25-21  Brenin: After rejecting Qh5 and Ne8+ I eventually saw 44 Rd8, with mating threats. Black's best response seems be 44 ... Rxe5, and then 45 Qd4 looks good, but Black has too many possible replies for me to be convinced. OTB I'd play it and take the risk.
Nov-25-21  landshark: As far as I can see - I managed to mess this one up. I found the correct first move, but missed the obvious reply ...Rxe5. So I did what many players do when faced with a surprise - I promptly made a mistake. 45.Qh5 was my choice - I think Black can survive the ensuing complications because his K will be safer than usual if it gets driven to the middle of the board because of the presence of all his other pieces.
Nov-25-21  mel gibson: I didn't get this one.

Stockfish 14 says:

44. Rd8

(44. Rd8 (♖d4-d8 ♖f5xe5 ♕g4-d4 ♔g7xf6 ♖d8-f8+ ♔f6-g7 ♕d4xe5+ ♔g7xf8 ♕e5-h8+ ♔f8-e7 ♕h8-g7+ ♔e7-d6 ♕g7xa7 ♔d6-d5 ♕a7-g7 ♔d5-c4 ♕g7-e5 b4-b3 ♔h2-g3 ♔c4-b5 ♕e5-g7 ♔b5-c4 ♕g7xh6 ♔c4-d3 ♕h6-g6+ ♔d3-e2 ♕g6-h5+ ♔e2-d3 ♕h5-f3+ ♔d3-c2 ♕f3-c3+ ♔c2-b1 ♕c3xc5 ♔b1xb2 ♕c5xg5 ♔b2-b1 ♕g5-e5 b3-b2 ♕e5xe6 ♔b1-a1) +10.66/39 203)

score for White +10.66 depth 39.

Premium Chessgames Member
  raymondhow: That was a pretty nice Thursday puzzle. Before playing the second move, I could see that if Black took the knight and exchanged rooks, my queen would invade to h8 and then skewer.
Premium Chessgames Member
  al wazir: This was pretty tough for "medium." What if black plays 46...Kg7 ? Now both ♖s are hanging. To avoid the swap and keep the pressure up, I think white has to play Qf2 or Qd8. At this point I got bogged down. I don't see a forced mate after either move. If 47. Qf2, then 47...Qe7. If 47. Qd8, then 47...Nd7 or 47...Rf5.
Nov-25-21  saturn2: <al wazir What if black plays 46...Kg7?> White skews the queen on a7 after 47.Qxe5 Kxf8 48.Qh8+
Nov-25-21  Lambda: Saw up to 46. Rf8, but then I couldn't find spot the winning of the queen after 46... Kg7.
Nov-25-21  Cellist: I saw the first move but thought that the next one would be Rg8+, leading to 45...Kxf6 and 46.Qh5 with all kinds of threats (mate or skewer winning the black Queen). But Black can answer 46.Rf5 and then use the R to protect against the threats. No points for me!
Premium Chessgames Member
  chrisowen: Whoopy i Rd8 gate it vis u axe ditto odd v its whippy ooh buffs it fake its v i let it arm roi i oo victor quippy pow its won cj dug within i hoy its bake it buff v it clock mitre its do its whooshly z it fun ooh flipper v it quiff diligence it flush it etc afford position get axiom foodbin its awooga job i nah glock ok add cite i ooh horrendous add mid flush v its ac faith its woody blocked it cafe it quaint lip duffy otb cohones ointment c bod excalibur double v it dare it darn it dips ooh sparring partner oo dapper gent its lump i rob round the mulberry roi kin cat fridge mob you knight dr due its growlnik ins focus v it pindrop it nap dr hooks it flick too c brook hmm radio it each Rd8 court;
Premium Chessgames Member
  drollere: didn't get this one. i blame it on the turkey stuffing.
Nov-25-21  Vermit: What's with the random =0.0 ?
Nov-25-21  Hercdon: Happy Thanksgiving To all the Americans out there. Let�s hope we can help get the natives even over the next 400 years or less
Nov-25-21  Aware: 45. Qd4 is a tough move to spot
Premium Chessgames Member
  Jimfromprovidence: It took a while but I got the main threat 44 Rd8, seeing 45 Rg8+ Kf7 46 Qh5+.

I did not know if 45...Rxe5 or 45...Rxf6 was better for black. In the text, I like after 45 Qd4, below, that both the knight and rook are pinned.

click for larger view

for example, black cannot protect the knight with 45...Rf5 because of 46 Nh5++.

click for larger view

Premium Chessgames Member
  agb2002: Black threatens Rxe5.

White can attack the black king starting with 44.Rd8:

A) 44... Rxe5 45.Qd4 (45.Qh5 Kxf6 46.Qxh6+ Kf5 [46... Ke7 47.Qf8#; 46... Kf7 47.Qh7+ Kf6 48.Rf8+ and mate next] 47.Qf8+ Kg6 [47... Ke4 48.Qf3#] unclear, perhaps 48.Qh8 gives something)

A.1) 45... Kxf6 46.Rf8+ Kg7 47.Rc8 Kf6 (47... Qb7 48.Qxe5+) 48.Rxc5 Qb8 49.g4 and the black rook is lost after exhausting the pawn moves.

A.2) 45... Qc7 46.Ng4 wins the rook.

A.3) 45... Qa5 46.Ne4 as above.

B) 44... Rxf6 45.exf6+ Kxf6 46.Qxb4 wins decisive material.

C) 44... b3 45.Rg8+ Kf7 46.Qh5+ Ke7 47.Qe8#.

Premium Chessgames Member
  agb2002: A peculiar hallucination: Black can play 48... Qxc5 in my line A.1.
Premium Chessgames Member
  al wazir: <saturn2: <What if black plays 46...Kg7?> White skews the queen on a7 after 47.Qxe5 Kxf8 48.Qh8+>

Good! Thanks.

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