Sipke Ernst vs Alexander Baldus (2001)

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Sipke Ernst vs Alexander Baldus
HZ Open (2001), Vlissingen NED, rd 2, Jul-29
King's Indian Defense: Four Pawns Attack. Normal Attack (E77) · 1-0

ANALYSIS [x]

FEN COPIED

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< Earlier Kibitzing · PAGE 2 OF 2 · Later Kibitzing>
Sep-27-22		saturn2: I mean at move 35. If white has played 34.Nf6 before.

Sep-27-22		mayankk06: White has two pawns on the 7th rank but both look weak and can be immediately captured by either the opponent King or Rook. However White can sac one to Queen the other via 34 Nf6+ Kxg7 35 Bd5. Black can pick the free Knight but will still be down against a Queen and Bishop versus 2 Rooks.

Sep-27-22		agb2002: White has a bishop and a knight for two rooks. The knight can fork d5 and g8. Therefore, 34.Bd5 Rxd5 (due to d8=Q#) 35.Nf6+ Kxg7 36.Nxd5 wins. A funny line is 36... f4 37.d8=Q f3 38.Qf6+ Kg8 (38... Kf8 39.Qh8#) 39.Ne7+ Kf8 40.Nf5 and mate soon.

Sep-27-22		mel gibson: I missed this one today when I didn't solve it in 20 seconds. Stockfish 15 says mate in 23: 34. Bd5 (34. Bd5 (♗f3-d5 ♖d3xd5 ♘h5-f6+ ♔g8xg7 ♘f6xd5 ♖c2-c6 d7-d8♕ ♖c6-e6 ♕d8-g5+ ♔g7-f8 ♕g5xf5 ♔f8-g7 ♕f5-g5+ ♔g7-f8 ♘d5-c7 ♖e6-b6 ♕g5xe5 h7-h5 ♕e5-h8+ ♔f8-e7 ♘c7-d5+ ♔e7-d6 ♘d5xb6 a7xb6 ♕h8xh5 f7-f6 ♕h5-b5 ♔d6-c7 h3-h4 ♔c7-d6 ♕b5xb6+ ♔d6-e5 h4-h5 ♔e5-f5 ♕b6-e3 ♔f5-g4 h5-h6 ♔g4-h5 h6-h7 ♔h5-g6 h7-h8♕ f6-f5 ♕h8-h6+ ♔g6-f7 ♕e3-e6+) +M23/63 595) white wins _ mate in 23.

Sep-27-22		TheBishopSweden: I saw the fork on d5 and g8 after a second, but I did not see that after 34.Bd5! Rxd5 35.Nf6+ Kxg7 36.Nxd5 the knight is blocking the d-file for the rook and the pawn is preventing 36.-Rc8.

Sep-27-22		Teyss: Went for 34.Nf6+, then hesitated between 35.Nd5 and Bd5, checked that both win and looked at the game so cannot say I solved it because it's not the best move. 34.Bd5 is far more efficient and prettier. Didn't even consider 34....Rxg2+ 35.Bxg2 e4 as spotted by <TheaN> (again). FWIW SF rates 34.Bd5 at +61.2 (29 ply), 34.Nf6+ Kxg7 35.Nd5 at +13.7 (32 ply) and 35.Bd5 at +7.2 (33 ply).

Sep-27-22		Chessius the Messius: Sad, but serious.

Sep-27-22		Brenin: 30 ... Rxe5 would have given Black a decent position, with R+P for B+N. instead, 30 ... dxe5 created that monster of a passed d-pawn.

Sep-27-22		AlicesKnight: Like others I saw the Nf6+ route first; yes, the game is more efficient.

Sep-27-22		goodevans: Call me old fashioned but I like my puzzles to have just the one solution. Still, at least today's isn't quite as profligate as last week's Rellstab vs Stoltz, 1930 for which we should be thankful.

Sep-27-22		Pawn Slayer: I went 34Nf6+ Kxg7 35 Nd5 and didn't look any further as it wins outright, with white having Q, B and N v 2 Rs. Perhaps I should have remembered Fischer's famous maxim: "If you see a good move, don't play it: there might be a better one".

Sep-27-22		TheaN: I see a lot of solvers posting 34.Nf6+ and then claiming a solve with the notion "because it does the same and wins". The latter is right, but the former is debatable: some lines force White to work a bit more for the win. Lets conclude 34.Bd5 Rxg2+ (Rxd5 35.Nf6+ +-) 35.Kxg2 Rd2+ 36.Kf1 Rd1+ 37.Ke2 +- is the best line and White is mating soon. Compare that to 34.Nf6+ Kxg7 <35.Bd5>: click for larger view After 35....Kxf6 36.d8Q+ Kg7 37.Qg5+ Kf8 38.Qxf5 Rxd5 39.Qxc2: click for larger view White's winning, but it's 'just' Q:R+P Instead, <35.Nd5> is even 'worse': click for larger view 35....e4! 36.Bxe4 (d8Q exf3 37.Qg5+ Kh8 is very tricky) fxe4 37.d8Q Rc6 +-: click for larger view And it's Q+N:2R with the rooks quite well placed. Don't get me wrong, both lines are winning. Just stating that the resulting positions do still require converting from White, whereas 34.Bd5 decides immediately due to the mate threat and White having an additional piece in the end result.

Sep-27-22		eblunt: <Pawn Slayer > 35 ... ♖xf3 and it's 2 ♖s + 5♙ vs ♕ + ♘ + 2♙ which is pretty even material wise, but then I think White strikes first with 36 ♕f6+ though I couldn't see a full mating pattern.

Sep-27-22		Dionysius1: I saw the first few moves, but they only gave White a Knight and a few pawns against a Rook and a lot. I didn't see that after 34...Rxd5 35. Nf6+ Kxg7 36. Nxd5 the d file is still blocked and the 8th rank is still covered, so the d7 pawn is safe to queen, when it's White's move Expad your horizon, Dionysius1! click for larger view

Sep-27-22		TheTamale: I had a similar idea: 34) Nf6+, Kxg7; 35) Bd5. The game line is better, but Engine confirms my line gets the job done.

Sep-27-22		TheTamale: Oops, should've read <TheaN> et al before posting my "novel" solution. :-(

Sep-27-22		chrisowen: I gap men our Bd5 ghouls sac for muffers arrive sec aida its sad Bd5 aka;

Sep-27-22		paulalbert: Took me a while to see the correct idea ( wasted time on the absurd hope of marching K to h6 and mate threat with Nf6ch ) : finally considered both Nf6ch and Bd5 ( seeing the key was the d7 pawn, not the g7 pawn ) and correctly decided Bd5 first was the best. Not sure Tuesday/Easy is the correct way to classify this one, but at least I found the correct solution.

Sep-27-22		KevinDenelsbeck: Someone please tell me that Mr Ernst's nickname is "Spike"? I've read his first name that way too many dyslexical times.

Sep-27-22		chrisowen: Paddy mcguire x country.

Sep-27-22		eblunt: < Tamale > me too

Sep-27-22		Steve Holloway: Yea, I didn't get any farther than Nf6+ Kxg7 and either Nd5 or Bd5, both win

Sep-27-22		PawnSac: Tamale / eblunt if you played Nf6 in the actual game you'd still probably score the full point so we'll give u the full credit [wink]

Sep-27-22		mel gibson: OK - well 34.Nf6+ was the move I saw too. So how good was it? Stockfish 15 says: 34. Nf6+ (34. Nf6+ Kxg7 (♔g8xg7 ♗f3-d5 ♔g7xf6 d7-d8♕+ ♔f6-g7 ♕d8-g5+ ♔g7-f8 ♗d5xf7 ♖c2-c7 ♗f7-c4 ♖c7xc4 ♕g5xf5+ ♔f8-g8 ♕f5xd3 ♖c4-f4 ♕d3-d6 ♖f4-f7 ♕d6-b8+ ♔g8-g7 ♕b8xe5+ ♔g7-g6 ♕e5-d6+ ♔g6-g7 ♕d6-g3+ ♔g7-f6 ♕g3-f4+ ♔f6-g6 ♕f4-e5 h7-h6 ♕e5-d4 ♔g6-h7 ♕d4-d3+ ♔h7-g7 h3-h4 ♖f7-e7 ♕d3-d5 ♖e7-e1 ♕d5-d4+ ♔g7-g8 ♕d4xa7 ♖e1-a1 ♕a7-b8+ ♔g8-h7 ♕b8-b7+ ♔h7-g8 ♕b7-c8+ ♔g8-f7 ♕c8-c4+ ♔f7-e7 ♕c4-e4+ ♔e7-f8 ♕e4-f5+ ♔f8-g7) -20.85/36 612) score for Black -20.85 depth 36

Sep-27-22		Refused: Saw the theme. Question was then 34.Bd5 or 34.Nf6+ I didn't see an immediate difference, I opted for Bd5 because I found it aethetically more pleasing, and I prefered to keep the King locked up on g8, thus making it more forcing. 34.Bd5 Rxd5! is virtually forced 35.Nf6+ Kxg7 36.Nxd5 and the d-pawn runs.

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