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Later Kibitzing> |
Feb-05-19
 | | Phony Benoni: 59. Rxb5 60 cxb5 a3! White's rook is stuck, and his king is outside the square of Black's king as it captures the b-pawn and makes its way to b3. |
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| Feb-05-19 | | ChessHigherCat: Rxb5 60. cxb5 a3 and the white king will eat the rook, cannibal that he is! |
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| Feb-05-19 | | Skewbrow: The manouver 59...Rxb5 60.cxb5 a3. Stands out. The white rook is stuck. The black king has the time to snatch the b-pawn and march to b3 before the white king can help. |
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| Feb-05-19 | | ChessHigherCat: Sorry, I mean the black king will eat the rook, of course! 58. Nxa3 Rxb1 59. Nxb1 Kb4 may look natural but it's a really a very bad idea. I could see it was a bad move but I wanted to check with SF to see how it scored and the result was rather bizarre: 1) mated-in-41 (41 ply) 60.Kf1 a3 etc. |
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Feb-05-19
 | | al wazir: Nice! I am weak at endgame play, so I was happy to get this one. White's problems were that his ♔ was too far away to defend and his ♘ was kept out of the fray by the ♙ wall. I'll have to play it out to see if he could have done anything to improve. |
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| Feb-05-19 | | stacase: Ha! That was cute, a stalemated Rook waiting for Black's King to arrive with his terrible swift sword. |
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Feb-05-19
| | al wazir: Well, yeah: 58. Nxa3. If now 58...Rxb1 59. Nxb1, it's still up for grabs. I think black wins, but it's a fight. |
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Feb-05-19
 | | Jimfromprovidence: The white king could never help.
Put the king on c2 instead of g2 at the puzzle position and see if it makes a difference. 
click for larger viewBlack to play. |
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| Feb-05-19 | | devere: The position after 60...a3 is comical, unless you were playing White. |
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| Feb-05-19 | | saturn2: I saw 59...Rxb5 60. cxb5 a3
Possible follow up:
61. Kf2 Kxb5 62. Ke2 Ka4 63. Kd3 Kb3 |
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| Feb-05-19 | | agb2002: Black has a bishop and a pawn for a knight.
White threatens Rxb2 and Nxd6.
The white king is too far from the queenside. This allows 59... Rxb5 60.cxb5 (60.Rxa4+ Kxa4 61.cxb5 Kxb5 - + [b+p]) 60... a3 61.b6 Kxb6 62.Kf2 Kb5 63.Ke2 Kb4 64.Kd2 Kb3 winning decisive material. |
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| Feb-05-19 | | agb2002: <Jimfromprovidence: The white king could never help. Put the king on c2 instead of g2 at the puzzle position and see if it makes a difference.> Interestingly, it makes not: 59... Rxb5 60.cxb5 a3 61.b6 Kxb6 and the black king will invade White's field through c4 or, after Rxb2, will win the pawn ending due to the passed c-pawn. |
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| Feb-05-19 | | drollere: Rxb5; 60. cxb5 Bd4 probably wins as well, as black gets 2 passed pawns and one of them will cost the R. |
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| Feb-05-19 | | Walter Glattke: Rook catching, 61.b6 Kxb6 62.Kf2 Kb5 63.Ke2 Kb4 64.Kd3 Kb3 or 64.Rxb2+ axb2
65.Kd2 a1Q |
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| Feb-05-19 | | AlicesKnight: The game continuation was not too hard to see. The R is on ice. |
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Feb-05-19
 | | Stonehenge: 56.axb4+ cxb4 57.c5 would have been interesting. |
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| Feb-05-19 | | cocker: <drollere> not so. After 60 … Bd4, White gets the advantage with 61 b6 Kxb6 62 Rxa4. |
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| Feb-05-19 | | rudiment: I saw 60... Rxb5 but I didn't see the rest of the game line. I went with 61... Kxb5, reasoning that White doesn't have the resources to stop both passed pawns. |
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| Feb-05-19 | | malt: Have 59...R:b5 60.cb5 a3 61.Kf2 K:b5 |
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| Feb-05-19 | | TheaN: Tuesday 5 February 2019
<59....?>
Obviously, Black can snare the rook and should go for the immediate win with <59....Rxb5 60.cxb5 a3 -+> and now I believe any sequence of moves should win except for a bishop move. Typically though Black has two distinct plans.
The easiest plan works because the White king's too far away: 61.Kf2 (or 61.b6 Kxb6 62.Kf2) Kxb5 62.Ke2 Kb4 63.Kd2 Kb3 -+ and Black already captures the helpless rook. The second plan is to defend the bishop another time, putting White in principle zugzwang with 61.Kf2 c4 62.Ke2 c3 and Black can just pick up b5 and invade over the light squares. However, as mentioned, Black is two pawns up and the pieces snare each other, so Black can also just invade at leisure as long as White doesn't reach b5 (where he has repetition with Ka5-Kb5). |
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| Feb-05-19 | | TheaN: To make this concept clear, Jim already put the White king on c2, but lets assume from the end position Black captures on b5 and shuffles three times: 61.Kf2 Kxb5 62.Ke2 Ka5 63.Kd2 Kb5 64.Kc2 Ka5 65.Kb3 Kb5: 
click for larger viewStill won as Black will always play Kc4, with or without PxR and KxP inbetween. Even with White opposition: 66.pass Ka5 67.Rxa3 (Kc4 Ka4) Bxa3 68.Kxa3 c4, and Black will be able to pick up f3 and e4 or g4 without risk |
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| Feb-05-19 | | zb2cr: Clever. 59. ... Rxb5; 60. cxb5, a3 and White's Rook is confined in a unusual cage. White's King cannot get across in time to control b3, so White can't even sacrifice his Rook for the Bishop and take the Pawn. Not that that matters, as <Jimfromprovidence> points out. |
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| Feb-05-19 | | Cheapo by the Dozen: While I agree that this puzzle is Tuesday-easy, the OBVIOUS indisputable winning line I found is rather long. Part 1: The two moves trapping the rook.
Part 2, especially if White gains a tempo by pushing the b-pawn: March the c-pawn to c3. Part 3: King to c4, and then to whichever of b3 or d3 White leaves truly open, avoiding the stalemate trap in which Black plays ... Kb3 with White's king at b1. |
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| Feb-05-19 | | thegoodanarchist: There was really only 1 line to analyze. Very easy, probably Monday level |
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| Feb-05-19 | | thegoodanarchist: Casper wasn't so friendly to White. |
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Kibitzing
sac: 59...Rxb5