Mar-28-06
 | | Honza Cervenka: Pretty attack of Black with a classic Bishop sac on h2. |
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Jun-20-07 | | melianis: 6.Qb3 Na6 7.Be3(N) Bc5 8.O-O-O O-O 9.Bg5 Be7 10.e4 Nc5 (Seppälä-Kosmo (fin-ch, 2007), eventually 0-1.) |
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Nov-12-12 | | computer chess guy: Another defensive try is 19. Nf3:
 click for larger viewI think that makes things harder for Black, but the holes in White's position will still probably prove fatal. |
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Nov-18-22 | | Mayankk: Should this puzzle be 16 ... Black to play? |
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Nov-18-22 | | Brenin: Warning: look at the result of the game before attempting this POTD, and focus, not on e6, but on another square. |
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Nov-18-22 | | Honey Blend: I'd have played 16. ♗e2 or h3 to discourage ... ♘g4 ideas, but my kingside still lacks defensive manpower and black's bishop pair are superb. |
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Nov-18-22 | | goodevans: <Mayankk: Should this puzzle be 16 ... Black to play?> That would be a little on the easy side for a Friday but I think you're probably right. |
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Nov-18-22 | | King.Arthur.Brazil: For the attempt of 'death with music', the counterattack doesn't work too, for example, 21...♘d7 22. ♘xe6 fxe6 23. ♗xe6+ ♔h8 24. ♖xd7 ♘xf2 25. ♗d5 ♘e4+ 26. ♔d1 ♕g4+ 27. ♕e2 ♘xc3+ 28. ♖xc3 ♕xd7. |
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Nov-18-22 | | mel gibson: This game must be wrong.
Looks like it was a Black to play position?
Stockfish calls it close to a draw:
16. h3
(16. h3 (h2-h3 ♗d6-b8 ♗d2-e1 ♕d8-c7 f2-f4 ♕c7-e7
♗e1-h4 ♔g8-h8 b2-b4 ♘c5-e4 ♘c3xe4 ♗b7xe4 ♕a2-b2 e6-e5 ♘d4-e6 f7xe6 f4xe5
♕e7-f7 e5xf6 g7xf6 ♕b2-f2 ♗b8-e5 ♗c4-e2 ♕f7-g6 ♗e2-g4 ♖c8xc1 ♖d1xc1 ♗e4-d5
♖c1-d1 ♔h8-g7 ♗g4-f5 ♕g6-f7 ♗f5-g4 ♕f7-c7 ♖d1-f1 ♕c7-c3 ♗h4-g3 ♖f8-c8
♖f1-d1 ♗e5xg3 ♕f2xg3 ♕c3-c7 ♕g3-f2 ♕c7-e5 ♗g4-f3 ♖c8-c3 ♗f3xd5 e6xd5)
-0.06/43 141)
score for White -0.06 depth 43 = a draw. |
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Nov-18-22
 | | PawnSac: I know variety is nice but i never cared for a white to play and lose! I could find a dozen equally horrible suggestions for him! < G > |
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Nov-18-22 | | saturn2: So whats that, someone teasing me early in the morning. |
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Nov-18-22 | | jrredfield: It looks like 16 Be2 or 16 h3 will allow White to draw. By moving 16 Be1, White allows 16 ... Bxh2+ and 17 ... Ng4, a winning attack for Black. 16 Be2 would prevent that Black N move as would 16 h3. |
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Nov-18-22 | | agb2002: Black threatens Bxh2+ followed by Ng4.
White doesn't have any options to attack (16.Nxe6? fxe6 17.Bxe6+ [17.b4 Bxh2+] 17... Nxe6 18.Qxe6+ Kh8 19.Be1 Rc6). The threat Bxh2+ suggests 16.h3 or 16.Be2.
I'd probably try maneuver 16.Be2 (16... e5 17.Nf5; 16... Nce4 17.Nxe4 Nxe4 18.Be1 Qh4 19.h3). |
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Nov-18-22
 | | scormus: What <Brenin> said |
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Nov-18-22 | | agb2002: <Mayankk: Should this puzzle be 16 ... Black to play?> That's what I imagined when I noticed the black bishops aiming at the unprotected white castle. |
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Nov-18-22
 | | scormus: The bizarre thing is that B had just played ... Be6 to broadcast thd immediate attack. |
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Nov-18-22 | | Fiddlerookie: Keep in mind I'm still a newbie on the site, so I may be missing some obvious things. But it seems for a POTD with W to move, when W lost, the idea is to find a better move than the text? Since we're brought back to a spot just before Black's B sac where Stockfish counts the position pretty even. The hint to look away from the pressured forces on e5 got me looking at another part of the board - and frankly I didn't even see the sac coming at all! - so I considered N(c3) to b5, threatening the B but mostly to grab the pawn at a7, annoy the R, and open lines for W's R. Yet Stockfish rates the move as leaving W a stronger game than the text - even though it predicts B will still go for the B sac (yeah the one I didn't see), then that W declines it. I'm trying to get a sense for where Stockfish is helpful in these analyses and where it can be misleading. |
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Nov-18-22 | | sfm: Nice attack. Great defense.
In the moves after 32.Ne7+, White could have hoped that Black would somehow would have allowed for Qxh7+ and Rh1+ |
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Nov-18-22 | | goodevans: Greetings <Fiddlerookie>. I'll try to answer your two queries in reverse order. Regarding SF: There are different versions of Stockfish and analysis can be to different depths so you don't always get exactly the same result but I checked your 16.Ncb5 with Stockfish 14+ and it says 16...Bxh2+ is totally winning for Black (-8.2 at 29 ply). Are you sure you're reading it right? Regarding this puzzle: A few of this think it was published in error and it was supposed to be <16...? Black to play>. It's not impossible that it's correct (i.e <16.? White to play>) in which case you're right that it's about improving on White's losing move. If that's the case then you're supposed to work out that stopping 16...Bxh2+ is essential and the puzzle becomes how best to do that. Then there's little to choose between 16.Be2 and 16.h3, both of which prevent the follow-up 17...Ng4 (but not 16.f3 against which Black plays 16...Ng4 anyway since 17.fxg4 Qh4 is just too nasty). Puzzles based on a theme of prevention are fairly rare but we have seen a few. Just for the sake of it, here's one based on today's GOTD and the position after 26...b5:  click for larger viewBlack is about to forcibly win a pawn with 27...a5 and 28...Be7 (which ultimately won him the game) so can you see how White could have prevented that. (Hint: It's not 27.b4. Can you see why that won't work?) |
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Nov-18-22
 | | chrisowen: Lofty c jezebel its won quintessential Be1 feel h3 good axiom bobajob affable its pat mack dabble exorbitant bit hob Be1 hit h3 ok. |
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Nov-18-22 | | Philidor Attack: Are these puzzles selected by a monkey? |
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Nov-18-22 | | goodevans: I believe the monkey only selects the GOTD. ;o) |
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Nov-21-22 | | Fiddlerookie: Hi <goodevans> Thanks for the clarifying reply, and sorry for my delayed response . I'm using stockfish 11: but the more embarrassing problem was my misunderstanding the polarity of the negative score :-) (well, that makes a lot of things clearer!) The "puzzle of prevention" form is cool: from a newer learner's standpoint, it invites approaching midgame situations in a way less overwhelming than analyzing entire games. As for your puzzle: I've been chewing on it awhile. After 27.b4 Black can still push the pawn 27...a5. Then if 28.bxa5, 28...Bxa5 but the exchange is even. The B theatens White's knight if Black moves his knight. But that Kn seems powerful where it is, threatening Wh's B and so keeping his Kn pinned. Black could transpose the moves 27...Be7 and 28...a5 but I still see an even exchange with maybe positional advantage for Bl. What'm'I missing? |
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Nov-23-22 | | goodevans: <Fiddlerookie> 27.b4 doesn't work because after 27...a5 28.bxa5 Bxa5 Black has time to play 29...Bc7 and 30...Bd6 (or 29...Bd8 and 30...Be7) and will win the pawn anyway. The way to save the pawn would have been 27.e4 so that if 27...a5 then 28.Be3 and then if 28...Be7 White can keep things even with 29.Bb6. |
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