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Alexey Sokolsky vs Navrodsky
Novosibirsk (1944), Novosibirsk URS
Italian Game: Two Knights Defense. Open Variation (C55)  ·  1-0
ANALYSIS [x]

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Given 64 times; par: 32 [what's this?]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 6 OF 6 ·  Later Kibitzing>
Jul-08-18  messachess: Well done, but not insanely difficult.
Jul-08-18
Premium Chessgames Member
  agb2002: Recycled.
Jul-08-18
Premium Chessgames Member
  Richard Taylor: I found this move Nxh7 (which I was sure won) and what was played except somehow I thought Black had captured on e3 and in a line I thought I had another R which won the game.

I didn't see that final B move but I was looking out for a similar idea as I could see that Black's QB and R were out of the picture....

So I give myself a few points for finding a few moves but not the very beautiful way White played...So about 20% in this case...

Jul-08-18  ughaibu: The psychologically difficult move is Qf7, obvious enough on its own, I guess, but a big change of pace.
Jul-08-18  hdcc: <PinnedPiece: I would have gone 16. Bd3 rather than f pawn push....but what do i know.>

I wanted to do the same. A quick squiz at Stockfish had Bd3 as the second-best move, so I take some solace from that. The first three moves were certainly very easy. I would have played them OTB with very little hesitation.

Jul-08-18  Cheapo by the Dozen: It wasn't hard to see that the "piece" sacrifice only sacrificed a pawn, but I don't know whether I'd have tried it over the board. A slow-building attack also looked promising, since ... g6 by Black to boost 2nd-rank communication would also open the long diagonal.
Jul-08-18  Marmot PFL: This charming game is given in Estrin's book on the Two Knights' as an example of why 4...Nxe4 is inferior to 4...ed4.
Jul-08-18
Premium Chessgames Member
  malt: Got the first 3 moves 14.N:h7 K:h7 15.Qh5+ Kg8 16.f5 d6 17.fe6 (17.Bg5)
17..B:e6 18 Bd3
No cigar
Jul-08-18  ZonszeinP: Beautiful but easy
Jul-08-18
Premium Chessgames Member
  patzer2: I didn't recall today's (14. ?) Sunday puzzle as a rerun from 2005. However, I did remember difficult Sunday puzzles often begin with a demolition of pawn structure sacrifice. So finding the initial moves 14. Nxh7!! Kxh7 15. Qh5+ Kg8 16. f5 +- wasn't difficult for me.

However, after 16...Ne5 I did not find the strong reply 17. fxe5! +- (+4.90 @ 32 ply, Stockfish 8). Instead I went for 17. Bb3 +- (+3.76 @ 32 ply, Stokfish 8), which wins after 17...d6 18. Bg5! (not 18. dxe6? Bxe6 =) 18...Qe8 19. Qh3 b5 20. fxe6 +- (+4.61 @ 38 ply, Stockfish 8).

One move earlier, Stockfish 8 finds <PinnedPiece> and <hdcc>'s 16. Bd3! +- (+4.71 @ 32 ply, Stockfish 8) to be stronger than the game move 16. f5 +- (+3.13 @ 32 ply, Stockfish 8).

P.S.: Apparently 12...Kh8?, which allows 13. f4 +- (+2.06 @ 32 ply, Stockfish 8), was the losing move. Instead, 12...h6 13. Ne4 Qe5 14. Nc3 Ne7 15. Re1 Qf6 + 16. f3 Kh8 17. Nd5 Nxd5 18. Qxd5 d6 19. Bd3 Nf4 ± (+1.30 @ 31 ply, Stockfish 8) gives Black a fighting chance.

For an early improvement, our Opening Explorer indicates Black has had more success with the popular move 4...exd4 = (-0.02 @ 30 ply, Stockfish 8). As the result of this game and others in our OE suggest, the seldom played 4...Nxe4 5. dxe5 ⩲ to ± (+0.72 @ 30 ply, Stockfish 8) has not been as good for the second player.

Jul-08-18
Premium Chessgames Member
  thegoodanarchist: I got the first 3 moves. That's something...
Jul-08-18
Premium Chessgames Member
  thegoodanarchist: GOTD Title Proposal:

Blue 'Sky Law

Jul-08-18  morfishine: Not much insanity here with the well-trodden <Nxh7> followed by <Qh5+>

However, the final <21.Bd4> was cute and instructive taking advantage of Black's lack of development

*****

Jul-08-18  Nosnibor: Fairly easy and straight forward for a Sunday.
Jul-08-18
Premium Chessgames Member
  Jimfromprovidence: What if black tries to give back the piece with 16...d6?


click for larger view

If white plays 17 fxe6 then after 17...Bxe6 it looks like an even game.

Jul-08-18
Premium Chessgames Member
  ChessHigherCat: I saw the first three moves right away:

14. Nxh7 Kxh7 15. Qh5+ Kg8 16. f5 but then I got distracted by a "really cool" line in which white can sac the queen:


click for larger view

16...Qf7 17. fxe6! Qxh5?? 18. e7+, etc.

The only problem is that black, instead of collaborating, can play 16. ...Ne5 instead. I'm pretty sure I would have found the refutation to that line if I had looked, but I was too caught up in the glorious queen sac variant.

Jul-08-18  saturn2: The first 3 moves are rather routine.
Jul-08-18
Premium Chessgames Member
  FSR: The first three moves were obvious. Don't know if that means that I "solved" the puzzle. As <Jimfromprovidence> notes, 16...Ne5? was not forced.
Jul-08-18
Premium Chessgames Member
  ChessHigherCat: <JfP> and <FSR> If 16...d6, I found 17. Bg5 to open up the file and build up the attack on the pinned knight, and SF confirms:

1) +1.89 (21 ply) 17.Bg5 Qe8 18.Qh3 Nd4 19.Qg4 b5 20.Bd5 c6 21.Bxe6+ Nxe6 22.Rae1 c5 23.fxe6 Rxf1+ 24.Kxf1 Qg6 25.Kg1 Bb7 26.Re2 Bd5 27.b3 Re8 28.e7 Bf7 29.Qf4 Bd5 30.a4 b4 31.h4 Bf7 32.g4 d5

Jul-08-18
Premium Chessgames Member
  ChessHigherCat: The above SF line leads to this position:


click for larger view

And now white is clearly winning:

1) +4.13 (20 ply) 33.h5 Qa6 34.Re5 Qd6 35.h6 Kh7 36.Bh4 Bg6 37.hxg7 Kxg7 38.Qg5 d4 39.Rxc5 Kh7 40.Re5 Qb6 41.Bg3 d3+ 42.Bf2 d2 43.Qxd2 Qf6 44.Qe3 Kg8 45.Re6 Qa1+ 46.Kg2 Qg7 47.Qg5 Bxc2

Jul-08-18  Walter Glattke: diagram above 16.-Qf7 17.fxe6 get the end after 17.-Qxf1+ 18.Rxf1 Rxf1+ 19.Kxf1 dxe6 20.Qe8+ Kh7 21.Bd3+ g6 22.Qxg6+ Kh8 23-Bh6 Ne5 24-Qg7#
Jul-08-18  Walter Glattke: After 17.Bg5 Qe8 18.Qh3 I thought for 18.-Nse5 19.Bb3!? Nf7 20.fxe6 Nxg5 21.e7+ Rf7 22.Bxf7+ Qxf7 23.Rxf7 Nxh3+ 24.gxh3 Kxf7 so black was the winner.
21.Rxf7 Bxe6 22.Rxg7+ Kxg7 23.Qh6+ Kg8
24.Bxe6+ Rf7 25.Bf6 Qxe6 26.Qh8#
Jul-08-18
Premium Chessgames Member
  Jimfromprovidence: <ChessHigherCat><JfP> <and <FSR> If 16...d6, I found 17. Bg5 to open up the file and build up the attack on the pinned knight, and SF confirms:>

Also check out 17 Rf3 after 16...d6 with the threat of 18 Rh3. Never would have seen this but Stockfish did.


click for larger view

Jul-08-18  pajaste: Got until f5 but missed several afterwards.
Jul-08-18  Helios727: Why not 16... b6 ? After 17. fxe6 Rxf1+ 18. Rxf1 dxe6, is not Black somewhat okay?


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