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Later Kibitzing> |
| Dec-04-17 | | patzer2: For today's Monday (41. ?) puzzle 41. Rxd7+ Kxd7 42. h5 +- wins because the Black King can't stop the dual pawn promotion threats 42. h6 and 42. fxe5. P.S.: Black's decisive mistake appears to be 28...g5? allowing 29. Rg1 +- (+2.66 @ 30 ply, Stockfish 8). Instead, 28...Rc5 29. Rg1 g6 30. f4 ±(+1.11 @ 33 ply, Stockfish 8) gives Black practical drawing chances. Earlier, Black's 11...bxc5?!, allowing 12. Qxc5 ⩲ to ± (+0.43 @ 28 ply, Stockfish 8), neglects development and prematurely releases the tension in White's favor. Instead, Black could have kept it fully level with 11...Ba6 = (0.00 @ 30 ply, Stockfish 8) or 11...0-0 = (0.00 @ 29 ply, Stockfish 8). |
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| Dec-04-17 | | AlicesKnight: Managed to see that too swift a capture on e5 is an error after 41.Rxd7. Agree that this is a little more subtle than the usual Monday, though perhaps the 'only' move (Rxd7) makes up for this. |
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| Dec-04-17 | | stacase: Ha! Take the Knight and say check.
Clears the way for White's H Pawn to run for daylight. |
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| Dec-04-17 | | diagonalley: this puzzle only appropriate for the most astute novice |
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| Dec-04-17 | | Cheapo by the Dozen: If it's possible to get the move order wrong, then the puzzle is harder than a typical Monday's. |
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| Dec-04-17 | | gofer: Interesting those people "miscounting the squares" in this humble
<Monday> POTD. So, how often do we get people failing on a <Monday>? Not very often. Nice one <CG>!!! The rook sac is a contender as we have an outside passed
pawn, but the really nice thing is that our h pawn is only part of a
potential crime-fighting-duo. If needs be, we can play fxe4 creating
another passed pawn. BUT, if we play fxe4 too early we lose!!! <41 Rxd2 Kxd2>
<42 h5 Ke6/Ke7> (exf4 h6 +-) <43 h6 ...>
Now, the king is over-worked - not before.
43 ... exf4
43 h7 +-
43 ... Kf7/Kf6
44 fxe5/fxe5+ Kxe5 (44 ... Kg6 45 e6 +-)
45 h7 +- |
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| Dec-04-17 | | groog: Yes, this was a nice puzzle for a Monday, not so straightforward. Maybe more along this line c.g? |
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| Dec-04-17 | | leRevenant: What FSR and diagonalley say |
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| Dec-04-17 | | paavoh: Tricky Monday! Should have been a Tuesday puzzle. I had to pause and start counting the required squares. 41.Rxd7+ Kxd7 42.h5 Ke6 43.h6 Kf6 44.fxe5+ is sufficient to win. |
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| Dec-04-17 | | malt: Ahhh Mondays 41.R:d7+ K:d7 42.h5 Ke7 43.h6 Kf7 44.fe5 |
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| Dec-04-17 | | morfishine: Oops, move order does matter :( |
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| Dec-04-17 | | cocker: Tricky. After 41 Rxd7+ Kxd7 42 h5 Ke6 43 h6 Kf7 44 fxe5 Kg6, 45 h7 loses. |
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| Dec-04-17 | | agb2002: White has a rook for a knight and a pawn.
Black threatens exf4 and Nc5.
The simplest way to win seems to be 41.Rxd7+ Kxd7 42.h5 (42.fxe5 Ke6 43.h5 Kxe5 44.h6 Kf6 45.Kf3 Kg6 46.Kf4 d4 - +) 42... Ke6 43.h6 Kf6 44.fxe5+: A) 44... Kxe5 45.h7 + -.
B) 44... Kg6 45.e6 + -.
C) 44... Kf7 45.e6+ Kf6 46.h6 + -. |
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Dec-04-17
 | | OhioChessFan: I mean, I couldn't possibly miss a Monday........anyway, for no particular reason, I am reminded that passed Pawns must be pushed! |
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| Dec-04-17 | | Dr Winston OBoogie: RxN. The f (e) and h pawns can't be stopped. |
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| Dec-04-17 | | saturn2: In a pawn ending not the number of pawn decides but the fact how far advanced they are.
RxN and the black king cannot handle two enemies at the same time. |
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| Dec-04-17 | | lost in space: <<newzild:> I made the same mistake as <Phony Benoni> and <lost in space>, playing the losing 42. fxe5?? on the assumption that it was an "easy Monday".
Tricky!>
I hate Monday's |
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Dec-04-17
 | | paulalbert: Got this one right by careful and precise calculation, but agree that it is a little more subtle than the usual obvious Monday puzzle. |
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| Dec-04-17 | | patzer2: <AlicesKnight: Managed to see that too swift a capture on e5 is an error after 41.Rxd7.> Right! If 42. fxe5??, Black turns the tables and steals the win after 42...Ke6 43. h5 Kxe5 44. h6 Kf6 -+. My solution was 41. Rxd7+ Kxd7 42. h5 +-. I chose 42. h5 without even considering 42. fxe5?? because, as <OCF> so succinctly stated, <for no particular reason> I was <reminded that passed Pawns must be pushed!> That being said, there is one early capture on e5 which is apparently not an error. White can also win with 41. fxe5+ Nxe5 42. Ra7 +- (+10.37 @ 34 ply, Stockfish 8). I considered that option, but went instead with 41. Rxd7+ Kxd7 42. h5 +- (mate in 17, Stockfish 8 @ 36 ply) because it appeared to win quicker and easier. |
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| Dec-04-17 | | kevin86: Back CAN stop the h-pawn, but white captures the black e-pawn and can queen that way also. |
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| Dec-04-17 | | Patriot: <patzer2> "...passed pawns must be pushed!" Dan Heisman gave me a good lesson about time and this is exactly what came to mind here. I was showing him one of my games and captured a pinned piece for no reason. It was pinned against their king and he asked why I did that? I explained what I had calculated and he said that loses time. He said never capture a pinned piece unless it is necessary like if they break the pin or something like that. So here I thought 42.fxe5 loses time, because I understood the concept after several time-wasting mistakes. |
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Dec-04-17
 | | Jonathan Sarfati: Yes, 41.♖xd7+ ♔xd7 42.h5 ♔e6 43. h6 ♔f7 44. fxe5 results in two distant passed pawns that are outside each others’ promotion squares. |
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Dec-04-17
 | | Bubo bubo: White converts into a won pawn ending with 41.Rxd7! Kxd7. Now the black king has to stay in the h-pawn's square, but after 42.h5 Ke6 43.h6 Kf6 44.fxe5+ Kg6 45.e6, White has two passed pawns on the 6th rank two squares apart, which are well known to be able to break through without support from their king. An instructive puzzle, but I question whether it qualifies as <<very> easy>: It requires a bit of endgame knowledge and, more important, one can go wrong twice after the key move by playing fxe5 prematurely. Btw, this mistake is interesting in its own right: After 41.Rxd7+ Kxd7 42.fxe5?? Ke6 43.h5 Kxe5 44.Ke3
click for larger view
White relies in vain on his <distant passed pawn>, because as soon as the white king attacks one of Black's passers, the other advances, forming those <autonomous passed pawns> in knight's move distance, e.g. 44...Kf6 45.h6 Kg6 46.Kf4 d4:
click for larger view
But Black could go wrong as well: if he gets impatient and plays 44...f4+?? instead, then White replies 45.Kf3!. Now the black pawns are no longer autonomous, and White's distant passer wins the day after all:
click for larger view
(45...d4/Kf5 46.h6 and 47.Kxf4) |
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Dec-04-17
 | | Willber G: Order! Order!
Because in this case it matters. |
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| Dec-05-17 | | Dr Winston OBoogie: <An instructive puzzle, but I question whether it qualifies as <<very> easy>> If counting to 5 isn't easy then I'm at a loss for words. A 9 year old with a 1200 rating could finish this game, sometimes in chess you only need to know 2 things. How the pieces move, and the ability to count. This is one of those occasions. |
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Kibitzing
sac: 41.Rxd7+