| Aug-28-23 | | King.Arthur.Brazil: 39. R1xc5 The expected sequence mus be: 39... Bxc5 40. Qe6+ Kg7 41. Rc7+ Kf8 42. Bh6# or 41... Kh8 42. Bf6#. If 39... Rb1+ 40. Kh2 Bxc5 41. Qe6+ Kg7 42. Rc7+ Be7 43. Rxe7+... However, B can answer too: Rb1+ 40. Kh2 Qxc5 41. Rxc5 Bxc5 42. Qe6+ Kg7 43. Qf6+ Kg8 44. Bh6. Mondays back! lol... easy! |
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| Aug-28-23 | | King.Arthur.Brazil: I guess that B was in a big time trouble because there is no sense on 38... Rb4(??). Even for 38...Rb2, 39. Qc4+ Kg7 40. Rc7+ and B loses.
Even if B plays the 'reasonable': 38...Qb3, after 39. R6xc5 Bxc5 40. Rxc5, W will have an extra ♗ and B ♔ position is exposed. |
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Aug-28-23
 | | Korora: Got it! |
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| Aug-28-23 | | mel gibson: Took me under 5 seconds - nice Monday puzzle. |
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| Aug-28-23 | | mel gibson: Just in case anyone wants the full solution?
Stockfish 16 says mate in 11:
39. R1xc5
(39. R1xc5 (Rc1xc5 Rb4-b1+ Kg1-h2 Rb1-b7 Qe2-c4+
Rb7-f7 Rc6-c8 Qa3-b2 Rc8xf8+ Kg8xf8 Bg5-h6+ Kf8-e7 Qc4-e4+ Ke7-d7 Qe4-d5+
Kd7-e7 Rc5-c7+ Ke7-e8 Qd5xf7+ Ke8-d8 Qf7-e7+) +M11/80 49) |
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| Aug-28-23 | | agb2002: White has a rook and a pawn for a knight.
The knight controls e6. Therefore, 39.R1xc5:
A) 39... Bxc5 40.Qe6+ Kg7 (40... Kf8 41.Bh6#; 40... Kh8 41.Bf6#) 41.Rc7+ and mate in two. B) 39... Rb1+ 40.Kh2 (or 40.Rc1 + - [R+P]) 40... Bxc5 41.Qe6+ as above. |
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| Aug-28-23 | | saturn2: After 38.Rc6 black had no good move. ....Qd3 seems to prevent queen checks on c4 and d5 but white has another letal move then: 39.Qe5. By writing 'letal' I thought there is potential for puns with Le Tal and letal attacks. |
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Aug-28-23
 | | Teyss: Hi saturn2,
You mean Le great Mikail Tal? Pun potential here. Regardless, Portisc did a great job at the Ungarian championship that year, finishing first without a loss after playoff. |
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Aug-28-23
 | | offramp: It's a Bank Holiday. It should be a hard one today. |
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| Aug-28-23 | | goodevans: <It's a Bank Holiday. It should be a hard one today.> Indeed it is. The puzzle is to find a move for White that *doesn't* win. I struggled for about ten minutes then gave up. |
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| Aug-28-23 | | Cellist: Taking with the other R also works. |
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Aug-28-23
 | | chrisowen: I foray its hem q jag puzzle its v c R1xc5 abled its axled its ho its acrid mid abridge light R1xc5 ear. |
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| Aug-28-23 | | Brenin: <Cellist: Taking with the other R also works.>: Indeed, and 39 R6xc5 is possibly even stronger, since it avoids the line 39 R1xc5 Qa1+ 40 Rc1 Qg7, though White is still winning after 41 Rc7. Earlier, White missed 38 Qc4, when the threat of a discovered check is crushing, e.g. 38 ... Nxe6 39 Qxe6+ Kh8 40 Bf6+ Bg7 41 Bxg7+ Kxg7 42 Rc7+ Kh6 43 Qf6, with Qg7+ or Qf4+ leading to mate. After 38 Rc6, Black's 38 ... Rb4 was the wrong way to prevent 39 Qc4+. Better was 38 ... Qd3, though one can see why Black, the exchange and a P down, was reluctant to exchange Qs. |
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| Aug-28-23 | | Hercdon: Either rook can take on C5, leading to eventual mate Either rook will do |
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| Aug-28-23 | | DrGridlock: From Fritz:
R1xc5 is mate in 11
R6xc5 is mate in 12.
-10 points to any human who went through the calculations in deciding whether the R1 rook move was preferred to the R6 rook move. |
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| Aug-28-23 | | tibone: I calculated two variations:
a)
1. R6xc5 Bxc5 2. Rxc5 Rb1+ 3. Rc1 Rxc1+ 4. Bxc1 Qxc1+ 5. Kh2
The position after 4...Qxc1+ I evaluated as "drawing chances for Black"
Therefore I favoured variation b)
b)
1. Qe8 (Now white threatens 2. Bh6. If black played 1...Kg7 then 2. Bh6+! +- ) |
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Aug-28-23
 | | Honza Cervenka: It was possible to play 30.Bxf7+ Kxf7 31.Qc4+ Ke7 32.Rec1 Nfd7 33.Rb5 Qc7 34.Bxc5+ Nxc5 35.Qb4 Kd6 36.Rcxc5 Qxc5 37.Rxc5 Rxc5 38.Qb6+ Rc6 39.Qd8+ Ke6 40.Qe8+ Kd6 41.Qg8 Bf6 42.Qxh7 with easily won ending. |
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| Jul-12-24 | | tibone: 39. R6xc5 Bxc5 40. Qe8+!
a) 40...Kg7 41. Qe5+! (attacks the king on g7 and the bishop on c5 at the same time) b) 40...Bf8 41. Qe6+!
b1)
41...Kh8 42. Bf6+! Bg7 43. Qe8#
b2)
41...Kg7 42. Qf6+ Kf8 43. Rc8 ( threatens 44. Bh6 ) |
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Kibitzing
sac: 39.R1xc5