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| Apr-09-18 | | landshark: Harder than usual for a Monday because it involved sacrificing the wrong queen. |
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| Apr-09-18 | | diagonalley: <al wazir> ... agreed... make white work for his supper |
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| Apr-09-18 | | saturn2: Like last monday there is no mate but only winning the queen. Today however I saw this. |
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| Apr-09-18 | | agb2002: White has a bishop and a pawn for a knight.
Black threatens Qxe2.
The knight cannot protect f7 because it stops Qxb2. Therefore, the black rook is overburdened with the defense of f7 and the back rank. Hence, 37.Bxf7+: A) 37... Nxf7 38.Qxb2 + - [Q+2P vs n].
B) 37... Rxf7 38.Rd8+ Rf8 39.Q(R)xf8#. |
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| Apr-09-18 | | saturn2: Thete is also 37 f4 Nc4 38 BxN |
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| Apr-09-18 | | landshark: <Saturn2> I think 37... Qxe2+ spoils 37.f4. |
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| Apr-09-18 | | patzer2: For a Black improvement, the computer suggestion 12...Rd8 looks good. After 12...Rd8 13. e4 d5! 14. exd5 Nxd5! = (+0.04 @ 32 ply, Stockfish 8), Black looks OK. |
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| Apr-09-18 | | saturn2: Landshark: right |
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| Apr-09-18 | | AlicesKnight: Looks like Bxf7+. If the R takes, then White's Rd8+ leads to mate, and if the N takes then the Black Q is lost leaving a slow Q vs. RN death. |
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| Apr-09-18 | | stacase: <AlicesKnight: Looks like Bxf7+. If the R takes, then White's Rd8+ leads to mate, and if the N takes then the Black Q is lost leaving a slow Q vs. RN death.> Bingo! If Bibisara Assaubayeva took the Bishop with the Knight, would this have been a Monday puzzle? Probably not. Which is why as Monday puzzles go this one wasn't straight forward. |
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| Apr-09-18 | | Oxspawn: Yes. I saw 37 Bxf7+ but could not see that this was 'won' after
37..... Nxf7
38. QxQ Nxd6
It is not 'won' if I was playing white. And since the point of POTD is to challenge us on what we would play, I can't make my move and then say "now let the grandmaster take over". I would win a lot more games if we could play that kind of tag-chess! |
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| Apr-09-18 | | whiteshark: What <lost in space> said... |
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| Apr-09-18 | | malt: 37.B:f7+ N:f7
(37...R:f7 38.Rd8+ Rf8 39.R:f8/Q:f8# )
38.Q:b2 N:d6 |
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| Apr-09-18 | | SpamIAm: <al wazir>- Definitely. The win does require 'technique', and it's sometimes surprising to see how poor some players 'technique' is. I would at least play a few moves, also. Especially if the clock were a factor (which we often don't know about in such positions). |
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| Apr-09-18 | | cocker: A strange puzzle in that Fritz would not have played the 'winning' move. Silicon prefers lots of other moves, such as e3 or e4 or h5. |
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| Apr-09-18 | | dgbuckmeister: After 37. Bxf7+ Nxf7 38. Qxb2 Nxd6 it's not a simple win for white. |
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Apr-09-18
 | | Bubo bubo: White exploits the pin on the long diagonal with 37.Bxf7+. Black cannot afford to capture with the rook (37...Rxf7 38.Rd8+ Rf8 39.R/Qxf8#), hence he has to give his queen by playing 37...Nxf7. A bit unusual for Monday, since White's win after 38.Qxb2 is not completely trivial. |
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| Apr-09-18 | | Cheapo by the Dozen: Nice one.
A little more complex than the usual "Bobby Fischer Teaches Chess" kinds of position, because ... Nxf7 averts a quick mate and loses on material instead. |
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| Apr-09-18 | | catlover: <cocker: A strange puzzle in that Fritz would not have played the 'winning' move. Silicon prefers lots of other moves, such as e3 or e4 or h5.> Wow...I ran it through Stockfish, and sure enough, it rated 37. h5 as way more advantageous for white than the game move or 37. Re6 which <patzer2> found. After 7. h5 gxh5 38. Rd7, if 38...Nxd7 then Qxb2 wins the black queen just like the game variation but with more material. Trying to hang on to the knight doesn't work either: 38...Qb8 39. Re7 Qd8 40. Qxe5. |
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| Apr-09-18 | | mel gibson: I saw the same move as the text however.
Stockfish 8 has a different move and says:
(37. h5
(h4-h5 g6xh5 ♖d6-d7 ♕b2-c2 ♕f6xe5 ♕c2-g6 ♖d7-d6 ♕g6-g4 ♗d5-e4
♕g4-g7 ♕e5xh5 ♖f8-e8 ♗e4-f5 h7-h6 ♖d6xh6 ♖e8xe2 ♗f5-h7+ ♔g8-f8 ♗h7-d3
♖e2-e5 ♖h6-h8+ ♔f8-e7 ♕h5-h4+ ♕g7-g5 ♕h4-b4+ ♖e5-c5 ♖h8-c8 ♕g5-d5+ ♗d3-e4
♕d5-c4 ♖c8-c7+ ♔e7-f8 ♕b4xc5+ ♕c4xc5 ♖c7xc5 ♔f8-e7 ♖c5-c7+ ♔e7-e6 ♗e4-d3
f7-f6 ♗d3-c4+ ♔e6-e5 f2-f4+ ♔e5-d4 ♗c4-e6 ♔d4-d3 ♖c7-f7 ♔d3-d4 ♖f7xf6
♔d4-c5 ♖f6-f5+ ♔c5-d6 ♗e6-c4 ♔d6-e7 ♖f5-f7+ ♔e7-d6 ♖f7-a7 ♔d6-c5 ♗c4-d3
♔c5-b4) +54.98/35 250)
score for White 54.98 depth 35 |
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| Apr-09-18 | | lasker27: I love Mondays. 37.Bxf7+, but isn't 37...Nxf7 a better defense than 37...Rxf7? White gets Q and P for N and R and will soon have two passed pawns hammering down on the e and f files, but at least black can hold on a little longer, if he's a masochist. |
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Apr-09-18
 | | Peligroso Patzer: <<SpamIAm: If 37...Nxf7 38.Qxb2 Black does at least pick up the rook with 38...Nxd6. Though White should still win with Q+2p vs R+N.> <al wazir: <SpamIAm: White should still win with Q+2p vs R+N.> But not without a fight. I would play on a few more moves.> <al wazir: <Gregor Samsa Mendel: But you're (probably) not a 2400 player facing a 2500 player.> I'm not even a 2224 player.
But this business of resigning at the earliest possible moment bugs me. It's not required by the rules. Yes, it's accepted chess etiquette nowadays, at least at the highest levels of play, but it wasn't always so. In the 19th century and earlier it was considered *poor* etiquette to quit before the game ended properly. Etiquette is a sometime thing.
And there are a few famous examples of where even great chess masters quit when they could have won: https://www.chess.com/article/view/....> First, I believe the following link provides the definitive collection of games where masters resigned in positions that were <winning>: https://timkr.home.xs4all.nl/chess2... Second, with regard to the timing of a resignation, I believe there may be more than considerations of etiquette that favor choosing to resign a hopeless position rather than “playing it out to the bitter end”, <especially in tournaments with multiple rounds per day>. In the penultimate round of a recent tournament, in a hopeless position, I found a clever tactic to force an exchange of queens and avoid mate in a few moves. What did I gain thereby? The privilege of suffering through another 20 or so moves of a hopeless ending before the inevitable naught was recorded by my name on the pairing sheet. A few minutes after that game concluded, in the final round of the tournament, I sat down to the board exhausted and dispirited, played extremely badly (even by my standards) and lost in under 30 moves. |
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| Apr-09-18 | | stst: B-sac Monday:
37.BxP+
IF ..... NxB, 38.QxQ
IF ..... Rxb, 38.Rd8+ Rf8, 39.QxR#
Guess Black will limbo without a Q!?! |
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| Apr-09-18 | | Halldor: After the text 37. Bxf7 I anticipated 37... Nxf7 38. Qxb2 Nxd6. White then has a won position, but in severe timetrouble anything can happen. |
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Apr-09-18
 | | PawnSac: < stacase: <AlicesKnight: Looks like Bxf7+. If the R takes, then White's Rd8+ leads to mate, and if the N takes then the Black Q is lost leaving a slow Q vs. RN death.>
Bingo! If Bibisara Assaubayeva took the Bishop with the Knight, would this have been a Monday puzzle? Probably not. Which is why as Monday puzzles go this one wasn't straight forward. > yea but from a CG point of view this is a good pick. The weaker players can rejoice they found Bxf7 and the stronger players have a little more challenge and something to discuss! |
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Kibitzing
sac: 37.Bxf7+