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| Feb-07-16 | | mel gibson: I didn't see this one but the computer saw it straight away.
It a fantastic solution. |
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| Feb-07-16 | | dfcx: Black has an extra pawn but is behind in development with exposed king. was thinking of
17.d4
but black counters with Qxc5 and ends the attack.
17.Ndxe4 fxe4 18.Nxe4 opens the file. Black can't take the second knight due to Qf7+. I do not see how to proceed from here. |
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| Feb-07-16 | | DarthStapler: I got the first two moves and the general idea |
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Feb-07-16
 | | offramp: A two-knight sacrifice. How hard is that to arrange? |
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| Feb-07-16 | | Whitehat1963: Insane is right. |
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| Feb-07-16 | | morfishine: Obviously, Rodshtein, for some reason, did not envision a double-sacrifice on <e4>, which is somewhat puzzling what-with his enterprising and energetic opening play. <14...g6> looks out place, which is about where he lost the thread |
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| Feb-07-16 | | agb2002: White is one pawn down.
Black is about to reinforce e4 with 17... Nf6.
The convergence of the queen and the king's rook on f7 and the possibility of bringing a knight to d6 suggest 17.Ndxe4 fxe4 18.Nxe4 and if 18... Qxe4 then 19.Qf7+ Kd8 20.Qxf8+ Qe8 (20... Kc7 21.Qxa8 + - [R+B+P vs 2N]) 21.Qd6+ Kc8 (21... Qd7 22.Rf8#) 22.Rf8 Nh6 23.Rxe8+ Rxe8 24.e4 + - [Q+B+P vs R+2N]. However, I haven't found a clear line against 18... Qd7. I don't know. On the board, I'd probably try a plan based on Na4-b6, Nb3-a5, Bd2-e1-g3, etc. |
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| Feb-07-16 | | whiteshark: <DarthStapler: I got the first two moves and the general idea> Mee, too! |
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| Feb-07-16 | | Longview: Impressive <patzer2> on all counts, you, grandson and mom! |
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| Feb-07-16 | | devere: 17.Ndxe4 fxe4 18.Nxe4 Qd7 is easy enough to see, but what then?
click for larger view
I think that over the board I might have played 19.Ng5, which is barely good enough to win. 19.Nd6+, as played in the game is much better. But the very best move is 19.Qb3. Black is almost in zugzwang, and the only piece he can safely move is his queen rook. After 19...Rc8 or Rd8, White can play 20.Bb2, and Black might resign. |
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| May-14-23 | | jrredfield: At first glance, I was certain that the best move involved a Knight capturing on e4. After a bit more thought, I chose 17 Ndxe4. If 17 ... fxe4, then 18 Nxe4 Rd8 (if 18 ... Qxe4 then 19 Qf7+ Kd8 20 Qxb7) 19 Bb2 Qc7 20 Qe6+ and Black is in a bad way. If 17 ... Qd7 then 19 Ng5 h6 19 Ne6. These deviations really don't matter much since after 17 Ndxe4, Black has no good escape from what I can see. |
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| May-14-23 | | Brenin: A glance at the f-file suggests 17 N (either)xe4 fxe4 18 Nxe4, and Black's position is wide open, e.g. 18 ... Qxe4 19 Qf7+ Kd8 20 Qxb7 or Qxf8+. Other Black responses allow Nd6+, as in the game, with an equally bad future for Black. |
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| May-14-23 | | Brenin: As <devere> pointed out seven years ago, the quiet move 19 Qb3 is a real killer, putting Black almost in zugzwang. |
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| May-14-23 | | mel gibson: I didn't know.
There are so many lines to analyse.
Stockfish 15 says:
17. Ndxe4
(17. Ndxe4 (Nd2xe4 f5xe4 Nc3xe4 Qe7-d7
Qc4-b3 h7-h5 Bc1-b2 Ra8-b8 d4-d5 Qd7xd5 Bb2xh8 Na6xc5 Rf1xf8+ Ke8xf8 Qb3xd5
c6xd5 Ne4xc5 Kf8-f7 Bh8-e5 Rb8-c8 Be5-d4 Ng8-e7 Ra3-b3 Rc8-c7 Rb3-b6 g6-g5
Rb6-f6+ Kf7-e8 Rf6-h6 h5-h4 h2-h3 Rc7-c6 Rh6xc6 b7xc6 Bd4-f6 Ke8-f7 Bf6xg5
Ne7-f5 Kg1-f2 Kf7-g6 Bg5-f4 Kg6-h5 Kf2-f3 Nf5-e7 e3-e4 d5xe4+ Kf3xe4 Kh5-g6
Bf4-d2 Kg6-f6 Nc5-d3 Ne7-g6 Bd2-e1 Kf6-g5 Be1-f2 Ng6-e7 Ke4-f3 Ne7-g6)
+6.90/46 726)
score for White +6.90 depth 46. |
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May-14-23
 | | An Englishman: Good Evening: Would have played the text variation and hoped Spielmann's dictum that the defender is more likely to blunder would prove true. Odd week. 5/6 with one already known; flubbed Wednesday. |
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May-14-23
 | | scormus: After the first two moves I preferred <devere's> old choice, 19 Ng5 to Nd6. As usual, I tried to force things and completely missed 19 Qb3! There were some tricky tactics in the text line that I struggled to navigate. I'll be interested to see what SF has to say. |
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| May-14-23 | | agb2002: White is one pawn down.
The first idea that comes to mind is 17.Ndxe4:
A) 17... fxe4 18.Nxe4
A.1) 18... Qxe4 19.Qf7+ Kd8 20.Qxf8+ wins decisive material (20... Qe8 21.Qd6+ Kc8 [21... Qd7 22.Rf8#] 22.Rf8). A.2) 18... Qd7 19.Nd6+ Bxd6 (19... Kd8 20.Nf7+) 20.cxd6 A.2.a) 20... Qxd6 21.Qf7+ Kd8 22.Qxb7 looks winning. A.2.b) 20... Nh6 21.e4
A.2.b.i) 21... Qxd6 22.Bxh6 Qxa3 23.Qf7+ Kd8 24.Qxb7, with the double threat Qxh8+ and Bg5+, looks winning (24... Nc7 25.Bg5+ Kd7 26.Rf7+ followed by Qxc7, and the black king is under a mating attack). A.2.b.ii) 21... Nf7 22.e5 must be winning (22... Nd8 23.Raf3 Qe6 24.Rf7 Qxc4? 25.Re7#). A.2.c) 20... 0-0-0 21.Rf7 Qxd6 22.Rxa6 is winning (22... Ba6 23.Qxa6+ Kb8 24.Qb7#; 22... Ne7 23.Ba3). B) 17... Qf7 18.d5
B.1) 18... Rd8 19.Rxa6 bxa6 20.Qxa6 looks very good for White (20... cxd5 21.Qb5+ followed by c6). B.2) 18... Nf6 19.Nxf6 Qxf6 20.Ne4 Qe5 (20... Qf7 21.Bb2 Rg8 [21... Bg7 22.Nd6+] 22.Nf6+ wins decisive material) 21.dxc6 Qxe4 (21... fxe4 22.Qf7+ Kd8 23.Qd7#) 22.Qxe4+ fxe4 23.cxb7 Rb8 24.Rxa6 Rxb7 25.c6 must be winning. |
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| May-14-23 | | agb2002: I didn't remember this puzzle but it seems I was far more interested today than seven years ago. |
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May-14-23
 | | chrisowen: I hop quandary it is whim yet juvenile c Ndxe4 achtung match it is did axiom jock it is ah grog Ndxe4 ear; |
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| May-14-23 | | Allderdice83: This one's like multiple puzzles rolled into one. I got the initial sacrifice, though I had 17. Ncxd4 -- Stockfish rates either knight about equal. I wanted to free up the rook on a3 with a later e3-e4 if Black did not take the knight on e4 (say, Black played 17 ... Nf6). Where I stumbled was after 18 ... Qd7, I didn't see the power of 19. Nd6+ and instead was thinking 19. Ng5, when of course, Black has 19 ... Qd5. Stockfish has that as about +1.3, so a likely draw with best play (starting with 20. Qxd5 cxd5 21. Nd6+! (Nxh8 is only ~ +0.8), and the rook will land on f7 causing Black some problems). Then White has the deflection 22. Bxh6! (best for Black is 22 ... Qe7 but it's still ~ +4.6 after 23. Ra5). All in all, quite an interesting position. But what's with that opening? How can one see 3 ... f6 as one of the top choices of an engine, and yet it is! What's with White's 2. c4 and 3. b4, anyway? Very strange. |
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| May-14-23 | | King.Arthur.Brazil: I didn't find much... I tried: 17. Ndxe4 fxe4 18. Nxe4. Black cannot capture the 2nd ♘ since: 18... Qxe4 19. Qf7+ Kd8 (20. Qxf8+ Kd7 21. Qd6+ Kc8 22. Rf8+ game over), 20. Qxf8+ Qe8 21. Qd6+ Kc8 22. Rf8 Ne7 23. Rxe8+ Rxe8 24. e4, White has daangerous attack yet. On the contrary, 18... Nf6 19. Nd6+ Kd8 20. e4 Rb8 21. Bg5 Bg7 22. e5 Rf8 23. Raf3 Nc7 24. exf6 Bxf6 25. Rxf6 Qg7 26. Rxf8+ Or something like it. |
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May-14-23
 | | Jimfromprovidence: I could not get any traction on this one. Even after looking at the text solution with Droidfish it was difficult to understand. I got hung up also after 17... O-O-O.
click for larger viewI saw 18 Nd6+ Rxd6 19 cxd6 Qxd6 but then what?
click for larger view |
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| May-14-23 | | landshark: I saw and chose the double knight offering that was played in the game, reasoning that it led to a very promising attack. And true to form, I promptly misplayed it with 19.Ng5 - a move which could well work if Black was as tactically challenged as me... I didn't like the winning 19.Nd6! - and never in a month of blue moon Sundays would I have even considered the deadly 19.Qb3!! |
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May-14-23
| | scormus: <Jim> I can always trust you to think of something the rest of us miss. I thought at the time, ... O-O-O might leave B vulnerable on a6. Without analysing, I wonder if there is anything in 20 Rxa6 bxa6 21 Qxa6+ |
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| May-14-23 | | Brenin: <Jimfromprovidence, scormus>: After 17 Ncxd4 0-0-0 18 Nd6+ Rxd6 19 cxd6 Qxd6 20 Rxa6 bxa6 21 Qxa6+ Kd7 White has 22 Nc4 leaving Black's K very exposed. If White starts with 17 Ndxe4 we end up with the same position, except that White's N is less well placed on c3, rather than d2. Even so, 22 d5 opens up the position nicely, and White should win in either variation. |
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Kibitzing
sac: 17.Ndxe4