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| Mar-10-17 | | Carlos0012358: 45.Qg5??????? Are you kidding?
What happened to 45.Rg2!! Done deal!
To me the puzzle analysis ends on 44.....Kf7. Perfectly played by white up to that point. Thereafter, a comedy of errors on both sides that defies analysis. |
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| Mar-10-17 | | morfishine: The exchange sac on <h5> is as common as the Knight sac on <d5> in various Sicilians ***** |
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Mar-10-17
 | | Once: <Carlos0012358:
To me the puzzle analysis ends on 44.....Kf7. Perfectly played by white up to that point. Thereafter, a comedy of errors on both sides that defies analysis.> Fritz says that the only mistake after 44...Kf7 was 50...exf5. Apart from that one move, both sides played the strongest moves. |
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| Mar-10-17 | | mel gibson: The first move was obvious but moving that pawn down on the g file wasn't yet it was essential. |
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| Mar-10-17 | | Marmot PFL: Just pry open the king rook file, sac,sac and mate! |
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Mar-10-17
 | | Fusilli: <Jimfromprovidence: <YouRang> pointed out 45 Rg2. It has some interesting things going for it.> Well, yes, but you guys are rushing to take the queen on h8. In this position: 
click for larger viewthe right order is 45...Qd4+! first. 46.cxd4 Rxc2+ and now if K moves, Rxg2 and black is fine and dandy, isn't he? In fact, he will have dangerous threats on white's king once the rooks are doubled on the g-file, I believe. Did you guys really see 45.Rg2 from the very beginning? I saw what Tate played, winning the rook with no counterplay, and was happy with that. :) |
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Mar-10-17
| | Fusilli: Addendum to my post. Self refutation... Still a cheap trick. White can play Kxc2 and after Rxh8 gxh8=B or N and is completely winning :) |
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| Mar-10-17 | | saturn2: White has to justify the first to moves. If the king escapes without loss of material the first two moves are not justified.
On move 40 the black rook has to move but cannot leave the 8th rank. On move 41 there are 2 queen checks available Qh6+ and Qh7+. The second one seems better cause it forces the king to the 8 th rank wrre he is bothered further by 42 g6. |
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| Mar-10-17 | | Marmot PFL: Guess black was fine until 38...Ra2? (looks like time trouble). The sac fails if Qxh5 can be met with Rh8. |
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| Mar-10-17 | | stst: At a glance, 39.RxN seems inevitable. Following (A).... gxR, 40.Qxh5 locks Black K. But (B)....Kf7 flees, then options arise (B1)40.Rh7+ ... (B2)40.Qg4 or Qd3 possible. The other R should guard the 3rd rank preventing the Black Q checking. |
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| Mar-10-17 | | YouRang: < Fusilli: <Jimfromprovidence: <YouRang> pointed out 45 Rg2. It has some interesting things going for it.>> Yes, the potential for stalemate tactics pointed out by <JimfromProvidence> do make the position not quite the "slam dunk" as I thought. I particularly like <Fusilli>'s line that creates a rare case where an underpromotion to N or B is required. :-) |
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| Mar-10-17 | | BOSTER: When most white pieces were on the king side vs open black king, black should not think about the attack white king ,but how to move his king on save place like d7.
So, maybe 38...Rh8 was better. |
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Mar-10-17
 | | Jimfromprovidence: <Fusilli> <Did you guys really see 45.Rg2 from the very beginning?> I did not see it until <YouRang> noted it. Imagine the horror for white of this unlikely scenario, with black to play. 
click for larger view |
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Mar-10-17
 | | offramp: Pretty straightforward. 39. RxR RxR 40 RxR RxR 41 RxR RxR 42 RxR RxR 43RxR RxR# |
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| Mar-10-17 | | Cheapo by the Dozen: Like other folks, I saw the essence of this pretty easily but didn't anticipate every last one of Black's defensive tries. |
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| Mar-10-17 | | ChessHigherCat: <offramp: Pretty straightforward. 39. RxR RxR 40 RxR RxR 41 RxR RxR 42 RxR RxR 43RxR RxR#> Is that your Rx prescription? |
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| Mar-10-17 | | swclark25: Would 40)...Rxf4 be better for Black? Provides option for Rf2+ and attack on White Rook if Black King can wriggle to Queen-side |
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| Mar-10-17 | | YouRang: <swclark25: Would 40)...Rxf4 be better for Black? Provides option for Rf2+ and attack on White Rook if Black King can wriggle to Queen-side> Nope. 40...Rxf4 41.Qh8+
click for larger view
The white Q pushes the black K up to g5 where Qh5# finishes things. |
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| Mar-10-17 | | swclark25: Thanks for the reply <YouRang>. I failed to note Qh8+ which is better than Qh7+ since it forces Black King toward g5. |
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| Mar-10-17 | | swclark25: <YouRang>, I did also look at 41)...Kf7 (rather than Kg6), but that could be countered with 42)Rh7+ then Black Kg6 is required, followed by 43)Qg8++ I always appreciate your helpfulness! |
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| Mar-10-17 | | YouRang: <swclark25><I did also look at 41)...Kf7 (rather than Kg6), but that could be countered with 42)Rh7+ then Black Kg6 is required, followed by 43)Qg8++> Actually, if 41...Kf7
click for larger view
White needs to play 42.g6+! to force the king to g6: 42...Kxg6 43.Qh7+ Kg5 44.Kh5# Other moves draw at best. :-) |
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| Mar-10-17 | | Moszkowski012273: "Growing up" I remember Emory stopping by Dupont Circle once every blue moon with his friend Tom Murphy... Always regret never talking to him. |
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| Mar-10-17 | | kb2ct: The puzzle turned into a very nice conversation
:0) |
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| Mar-10-17 | | morfishine: Play Chess960, then check back in with me
***** |
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| Mar-10-17 | | YouRang: <Fusilli> <Did you guys really see 45.Rg2 from the very beginning?> It's not so hard to see if you can get past the little "illusion" that crops up in this position:
click for larger view
The illusion is the (normally sound) idea that <losing the Q for a R is bad>. Getting past the illusion is to realize that in recapturing the R, we regain the Q! The transaction really amounts to <losing a P to gain a R>, which is very good! So, guarding that towering Pg7 with <Rg2> becomes a sensible choice. However, as your stalemate example shows, it might not be so simple if we need the B or N underpromotion. Of course in that case, white finishes way ahead in material anyway. |
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Kibitzing
sac: 39.Rxh5