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Jun-12-14
 | | hoodrobin: <Castleinthesky>
Welcome to the club! |
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Jun-12-14
 | | agb2002: White has a knight for a bishop.
Black threatens 30... Nxa5.
The risky position of the black king and the defenseless rook on h4 suggests 30.Qg5, aiming at d8 and h4: A) 30... Rxd4 31.Nxc6
A.1) 31... Bxc6 32.Nf5 Qf6 33.Qxf6 gxf6 34.Nxd4 + - [R+N vs B+P]. A.2) 31... Qxc6 32.Qe7+ Kg8 33.Qd8 Be8 34.Q(R)xe8+ Qxe8 35.R(Q)xe8#. A.3) 31... f6 32.Qe3 Rc4 33.Nd4 + - [N vs P].
B) 30... Qf6 31.Qxd5 Rxd4 and Black seems to hold (32.Qa8+ is not possible). -----
Another option is 30.Nxc6, removing a good defender:
A) 30... Bxc6 31.Nf5 wins the exchange.
B) 30... Qxc6 31.Qg5
B.1) 31... Rxd4 32.Qe7+ Kg8 33.Qd8+ and mate in two.
B.2) 31... Qf6 32.Qxd5
B.2.a) 32... Bc6 33.Qc5+ Kg8 34.Nf5 Rf4 35.Ne7+ Kh8 (35... Kf8 36.Ng6+ Kg8 37.Qf8#) 36.Nxc6 (or 36.Nd5) + - [N+P]. B.2.b) 32... Qc6 33.Qg5 Qf6 34.Qc5+ Kg8 35.Qc8+ Bxc8 36.Re8#. B.2.c) 32... Rxd4 33.Qa8+ Bc8 34.Qxc8+ Rd8 35.Qc5+ + - [N+P]. B.2.d) 32... Bc8(e8) 33.Qc5+ and mate in two.
B.3) 31... Re4 33.Nxe4 wins the exchange.
C) 30... Bxh3 31.gxh3 Rxh3 (with the idea 32... Rxg3 33.fxg3 Qxg3+ and perpetual) 32.Qc5, etc. -----
I think I'd play 30.Nxc6. |
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| Jun-12-14 | | morfishine: Black's position, creaking and groaning, "Khaves-in" with a simple forcing capture <30.Nxc6> forcing capture <30...Qxc6> forced due to 30...Bxc6 31.Nf5 <31.Qg5> attacking the rook while eyeing e7 & d8 <31...Qf6> Black must obstruct the h4-d8 diagonal plus defend the rook; for example, 31...Rh6 allows 32.Qe7+ <32.Qxd5> Black is positionally busted courtesy of the marauding White Queen; The main threat is 33.Qa8+ <32...Bc6> Now Black must defend another inroad avenue, this time the white-square h1-a8 diagonal <33.Qc5+> nice in-between move forcing the Black King away from defending the e-file <33...Kg8> forced
<34.Nf5> This kills; Black has no good square for his rook; for example if 34...Rh5 then 35.Ne7+ Kh8 36.Qxh5 and White has won a rook; or 34...Rf4 35.Ne7+ Kh8 36.Nxc6 White has won the Bishop and threatens 37.Re8# & 37.Qf8# ***** |
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| Jun-12-14 | | Nick46: Bot vinning - zere is no doubt about it. Abram caved in. |
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| Jun-12-14 | | Nick46: as <bengalcat47> rightly points out. |
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Jun-12-14
 | | Oxspawn: Coffee break thoughts of a very average* player.
I like the look of
30. Nb7 followed by Qg5 but not sure how to counter
30. Qf6
30. Nxc6 followed by 31.Nf5 would be good if black would retake with the bishop but not much cop if black retakes with the queen. Black rarely does what I want them to when I am playing white (and even sometimes when I am playing black). So what about
30. Nxc6 Qxc6
31 Qg5 Qf6
32 Qxd5 threatening Qa8+
Black can play
32. Qc6
Not sure where to go from here. White can get a passed pawn by exchanging queens but it does not seem like the answer to a POTD. Would not post this except I am following my own advice from yesterday – back your own judgement even if you have lousy judgement. (* The average of all people who know the chess moves – not the average of people who visit this site. Probably the geometric mean, but who knows?)
Now I will go and play out the ending and porbably hang my head. |
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Jun-12-14
| | Oxspawn: Oxspawn: Not hanging head at all. The first two moves is not bad, even if I find Botvinnik is (was) a little better than I am. But why did black not play 31. Qf6? |
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| Jun-12-14 | | dfcx: Black wants to trade the Knight at a5, the knight at c6 is protected by both bishop and the queen. But the queen also needs to protect the e7/d8 squares while the bishop guards f5. 30. Nxc6
A) 30...Bxc6 31. Nf5 forks queen and rook
B) 30...Qxc6 31. Qg5 Rh6? 32. Qe7+ Kg8
33. Qd8+ Be8 34. Qxe8+ Qxe8 35. Rxe8#
So the best defense is
C) 30...Qxc6 31. Qg5 Re4 32. Nxe4  |
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| Jun-12-14 | | dfcx: <Oxspawn: Oxspawn: Not hanging head at all. The first two moves is not bad, even if I find Botvinnik is (was) a little better than I am. But why did black not play 31. Qf6?> White can play 32. Qxd5 Bc6 33. Qc5+ Kg8 34. Nf5 wins 34...Re4? 35. Rxe4
34...Rh5 35. Ne7+ |
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| Jun-12-14 | | dfcx: <Oxspawn> If black plays 31...Qf6 32. Qxd5 Qc6 instead, 33. Qg5 Qf6 34. Qc5+ Kg8 35. Qc8+ Bxc8 36. Re8# |
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Jun-12-14
| | Oxspawn: Thanks dfcx. Nice to see that even on Thursday white has the potential for a queen sacrifice at the end. |
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| Jun-12-14 | | fokers13: got it.
a strange one to be sure with seemingly innocuous but powerful moves. |
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Jun-12-14
 | | Penguincw: My thoughts were 30.Nf5, followed by 30...Bxf5 31.Nxc6, but that doesn't really lead to anything. |
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Jun-12-14
 | | al wazir: <shivasuri4: After 32...Bc6, White wins with 33.Qc5+ Kg8 34.d5 Bd7 35.Qc8+ Bxc8 36.Re8#.> Thanks. |
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Jun-12-14
 | | kevin86: My immediate Qg5 fails because the knight guards d8 and e7-so it must be exchanged first. |
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| Jun-12-14 | | nalinw: My solution was an immediate
30. Qg5 - and I can't see why it won't work.
Where does Black put the Rook?
30. ... Rh6 and 30. ... Rxd4 are met by
31. Nxc6 and then
31. .... Bxc6 32. Nf5
31. ... Qxc6 32. Qe7+ and wins
If 30. ... Rf4 31. Nh5 wins |
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| Jun-12-14 | | Grnhorn: anyone see a better move for Black 24? |
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Jun-12-14
 | | Benzol: <Grnhorn> The only suggestion I could make is 24...g6 though it doesn't look very good. Black's problem is what to do about defending the knight at f5 and the d5 pawn. |
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| Jun-12-14 | | Grnhorn: yep!, don't see a way to get Black's Rook back in the game! |
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| Jun-12-14 | | sombreronegro: Really with this puzzle the a5 knight on the rim is dim and undefended so its natural to liquidate it. The bishop is stopping the night fork on f5 leaving the queen to capture that can't eye e7 and is now weak with a rook eying it. You are not going to exchange queens so the first place I looked was Qe3. Just a single threat..so its a matter of looking for a lose piece eying e7. Botvinnik was already previous to that point exploiting loose pieces with the knight pinned to the back rank and the bishop. At move 28 blacks pieces are completely uncoordinated. Looks like he thought he was trying to get that d4 pawn which baited him to leave his pieces all over the board. |
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Jun-12-14
| | patzer2: Got 30. Nxc6! (combination decoy and deflection) as my solution to this Thursday puzzle. After the expected 30...Qxc6 (30...Bxc6 31. Nf5 yields a winning Knight Fork) 31. Qg5! with a winning double attack, it was easy to see the zwischenzug (in-between move) 31...Rh6 32. Qe7+! with 32...Kg8 33 Qd8+ Be8 34 Rxe8+ Bxe8 35 Qxe8# to follow. Less clear to me was how play might proceed after 31...Qf6!? 32. Qxd5 (diagram below): 
click for larger viewSo I played it out against the computer (Fritz 12), and from here the win for White went 30...Be6 (32... Bc6 33. Qc5+! ; 32... g6 33. Qxd7 ) 33. Qc5+! Qe7 34. Qxe7+ Kxe7 35. Nf5+ Kd7 36. Nxh4 . |
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| Jun-12-14 | | BOSTER: < Grnhorn: don't see a way to get Black's rook nack in the game>.
click for larger view
Black to play 22...
Try Qd6 to encourage white to take away square g3 from the white knight playing g3, then
Black rook'll return to h6. |
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| Jun-12-14 | | Chess Dad: 30. Nxc6 Bxc6 31. Nf5 forking Q and R.
Let's see what I missed.
[edit].
Ok, it wasn't Bxc6, instead it was Qxb6. I wasn't ready for that, and I clicked through to White's next move before I thought about it. At least I got the first move.... |
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Jun-12-14
| | patzer2: <BOSTER: < Grnhorn: don't see a way to get Black's rook nack in the game>. Fritz 12 suggests 23...Rxd4! 24. Nxf5 Bxf5! = (position below) 
click for larger viewHere after 25. Qxf4 Qe7! = (position below),
click for larger viewBlack with the dual threat of a back rank mate or the capture of the unprotected Knight is in fine shape. |
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| Jun-13-14 | | dgbuckmeister: What about 31..Re4? |
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