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Sep-16-21
 | | OhioChessFan: White missed 34. c5 |
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| Sep-16-21 | | Brenin: After failing to find anything flashy I decided that simply 34 c5 was the way forward, e.g. 34 ... Nxd6 35 cxd6 and the d-pawn is unstoppable (35 ... Qd8 36 Qc7 Qxc7 37 Bxc7). |
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| Sep-16-21 | | EasilyConfused: I think 34 Rd7 is more forcing
If 35 Qe6 Rd8 36 Kf8 Bc5+
If 35 Qf6 Qc8 36 Qe6 Rd8 37 Kf8 Bc5+ |
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| Sep-16-21 | | Granny O Doul: EC: In your line "a" 34...Qe6, 35. Rd8 falls short of the mark after ...Qxc6. |
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| Sep-16-21 | | raviarun: Also, 34 Rd7 can be met with 34...Rxb6 |
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Sep-16-21
 | | al wazir: My move was 34. Rd7.
But I didn't see all of 34...Qf6 (34...Rxb6 35. Rxe7 Rxc6 36. Rxe8#) 35. Qc8 Qe6 36. Rd8 (36...Qe6/Qe7 37. Bc5) Qxc8 37. Rxc8 Kf8 38. Bc5+. This was a tough medium. |
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| Sep-16-21 | | mel gibson: Stockfish is not agreeing
with the text move of 34. Qc8.
It says that has a score for White of -0.66.
Stockfish 14 says
34. c5
(34. c5 (c4-c5 ♘e8xd6 c5xd6 ♕e7-d8 ♕c6-c7 ♕d8xc7
♗b6xc7 ♖a6-a8 d6-d7 a5-a4 d7-d8♕+ ♖a8xd8 ♗c7xd8 ♔g8-f8 ♔g1-f1 f7-f6 ♔f1-e2
♔f8-f7 ♔e2-d3 a4-a3 ♗d8-a5 a3-a2 ♗a5-c3 ♔f7-e6 ♔d3-c2 ♔e6-d6 ♗c3-b4+ ♔d6-c6
♔c2-b2 a2-a1♘ ♗b4-f8 g7-g6 ♔b2xa1 ♔c6-b5 ♗f8-g7 f6-f5 ♔a1-b2 ♔b5-c4 e4xf5
g6xf5 ♗g7xe5 ♔c4-d5 ♗e5-f4 ♔d5-e4) +4.73/42 116) score for White +4.73 depth 42. |
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| Sep-16-21 | | Amarande: I must be missing something here.
I'm seeing 34 Rd8 (threatening mate in two) and Black doesn't seem to have anything other than 34 ... Kf8, but then 35 Qxe8+! Qxe8 36 Bc5+ Kg8 37 Rxe8#. What's Black's resource? |
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| Sep-16-21 | | Granny O Doul: @ Amarande: the resource is 34...Qxd8. |
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| Sep-16-21 | | sp12: Why didn't black play 36.. Qxe4 instead of Qxc4? I dont get this. |
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Sep-16-21
 | | Jimfromprovidence: <mel gibson> <Stockfish is not agreeing
with the text move of 34. Qc8. It says that has a score for White of -0.66.> That's because it is one move to early for Qc8. After 34 c5, protecting both bishop and rook, then 35 Qc8 is a real threat, attacking the rook and also showing the potential danger of 36 Rd8. Here, after 34 c5, I put in a null move for black, then played 35 Qc8 to illustrate this threat. 
click for larger view |
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| Sep-16-21 | | NBZ: I also fell for Rd8. Well done CG, played me there. |
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Sep-16-21
 | | Teyss: Saw 34.c5 and the following variations but I find these puzzles with few pieces easier to solve because one can just go through all the moves and figure which works best. OTB it's a different story because of time. And the trick is we frequently forget to look at P moves. Briefly considered 34.Rd7 and Rd8 but with the cross-pins was not convinced. Discarded Qc8 immediately because thought the R was a good asset to keep. Even looked Bd8? and Qxe8? obviously failing and Rd5? which is not a puzzle move. <sp12> 36...Qxe4 is a bit worse because the c4 P is passed whilst the e5 P isn't. |
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| Sep-16-21 | | goodevans: If Black's pawn had been on a4 rather than a5 then this whole concept wouldn't work and White would have been right to play 34.Qc8. |
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| Sep-16-21 | | TheaN: I eventually settled on <34.c5 +-> realizing the potential of the pawn is enough to give away or trade material. Mainly 34....Nxd6 35.cxd6 Qxb6 36.Qxb6 Qd7 37.Qc7 with d7 +-. The more interesting line that I spend time on early on is 34.Rd7?! which doesn work because of Qe6=, but I pictured Qg5: this in turn doesn't work because of 35.Qc8 +-, but I was looking at 35.Ra7?
click for larger view
This odd double attack fails on 35....Qc1+ 36.Kh2 Qf4+ =, as 37.g3? Qxf2+!= |
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Sep-16-21
| | Teyss: <goodevans> Well spotted. In that case the aP would be one square closer to promotion with the main line 34.c5? Nxd6 35.cxd6 Qd8 36.Qc7 Qxc7 37.Bxc7 (dxc7 Ra8 and the BK is closer to the c7 P than the WK) Ra8 (diagram) 38.d7 a3 39.Bxe5 (d8=Q? Rxd8 40.Bxd8 a2) Rd8 and 40...Rxd7
click for larger view
Since the P is on a5 White has time to play 38.d7 a4 39.d8=Q Rxd8 40.Bxd8 a3 41.Bc7 a2 42.Bxe5 A good comment that SF couldn't have made ;-) |
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| Sep-16-21 | | goodevans: <Teyss> Nice one! |
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| Sep-16-21 | | TheaN: <raviarun: Also, 34 Rd7 can be met with 34...Rxb6> Hah! Yes, can be met definitely, at the cost of all of Black's material (actually #8). White can play 35.Rxe7, because 35....Rxc6 36.Rxe8#. The only mate defense h6 loses both pieces after Rxe8+ and Qxb6. |
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| Sep-16-21 | | Cellist: I was tempted to play 34. Rd7, but since it is a puzzle, I thought that some sort of sacrifice might be involved. I then found c5 and the winning line. 34. Rd7 does not win if Black defends accurately. |
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Sep-16-21
 | | chrisowen: Clumps o clive it is an ooh Qc8 garcon adrift nefarious ivory pc5 flubbs vital it is an ooh acetate evict hatchet chow it mein ha vis ivory clumps o clive it is an ooh muffled it was rival auckland jiggy big it is an ooh both thrupenny bit piece nez it quotient it livid fag dibby macks it is woosh corporal ponders muffle churchmen chuffing it chalice buck o creaks vim c feet it ice it view fragile ref far it sh i go ivans heal eye it bang it whaddaya know great choice v jack credible efface bot rescind give it jobsworth ignoble finish garcon five it within coder balance v it mits pulley it ahead it muts evict low it pc5 buxomed it Qc8 bah; |
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| Sep-16-21 | | Messiah: Eazy. |
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Sep-16-21
| | chrisowen: Finish band job qc8 eunich play i vintage pawn c5 missed no? |
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Sep-16-21
| | chrisowen: Quick raison d'etre no? |
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Sep-16-21
| | chrisowen: No doubt top draw no no? |
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Sep-16-21
| | chrisowen: Clumsy i evicts counter c8 no? |
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