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Feb-09-04
 | | Honza Cervenka: <I'm not sure 34. cd solves many problems -- for example 34.... e3 does look good here with the bishop check coming.> If 34.cxd4 e3 35.Rff1, then what now can black do? There is no immediate threat of check on e4 as this field is not protected by black pawn. Maybe the best continuation for black is then 35...Rd8 36.Rg1 Rg6 (white cannot take the Rook with Knight for Qf3+), but 37.Rxg6+ hxg6 38.Qxe3 does not look hopeless for white. |
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| Mar-08-06 | | Mating Net: 37...Qe2! is a nice deflection that threatens 38...Rf1#, the opera house mating pattern. |
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| Mar-09-06 | | Calli: White's mistake looks like 32.Ra1? which he plays to guard against Qd1+ However the Rook at a3 protects g3 nicely. Now Black gets Rxg3 in. Therefore, 32.Rd2! is correct and White might win. |
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| Jan-29-14 | | davide2013: It seems a Dutch Stonewall, not an Indian game as opening. |
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| Feb-01-19 | | lost in space: 37. Qe2!!
Solution for puzzle of the day Feb 1st 2019 |
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| Feb-01-19 | | ChessHigherCat: I was looking at 37...e3 but I think it must be 37...Qe2 38. Rxe2 Rf1# or 38. Rxf4 Qe1+ 39. Rf1 Qxf1# or other worthless defenses like 38. Rg2#??? or Nf3?? |
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| Feb-01-19 | | agb2002: Black has a bishop and two pawns for a knight.
White threatens Rxf4 and cxb7.
The white rook stops Rf1#. This suggests 37... Qe2: A) 38.Rxe2 Rf1#.
B) 38.Rxf4 Qg2#.
C) 38.Qd2 (or 38.Nd3, 38.cxb7) 38... Qf1+ 39.Rxf1 Rxf1#. D) 38.Qa1 Qxf2+ 39.Kh1 B(Q)g2#.
E) 38.Nf3 Rxf3 only gives White the possibility of two spite checks. |
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| Feb-01-19 | | drollere: Qe2 jumps out of the position, because the white R is trapped on both rank and file, and even Nd3 fails to Qf1+. |
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| Feb-01-19 | | saturn2: I saw 37...Qe2
38. Qd2 Qxd2 39. Rxd2 Rf1#
38. Rxe2 Rf1#
38. Nd3 Qd1+ 39. Rf1 Rxf1# |
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| Feb-01-19 | | Walter Glattke: Hoping of no mistakes this morning, I have 37.-Qe2 38.cxb7 Qe1+ 38.Rf1 Qxf1# B) 38.Rxf4 Qg2# C) 38.Rxe2 Rf1# Ah, 38.Qd2 Qxd2 (agb plays better Qf1+) 39.Rxf4 Qg2# D2) 39.Rxd2 Rf1# D3) 39.cxb7 Qe1+ D4) 39.Ng4 Rxf2 40.Nxf2 Qf1# E) 38.Nd3 Qd1+ 39.Ne1 Qxe1+ 40.Rf1 Rxf1+ 41.Qg1+ Rxg1# F) 39.Qa1 Qxf2+ 40.Kh1 Qg2# F2) 40.-Bg2# Several other mates with less good moves possible.Today I spent more time, maybe no mistake then. |
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Feb-01-19
 | | piltdown man: Just beautiful! |
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| Feb-01-19 | | AlicesKnight: Found ....Qe2 quite quickly (for me on a Friday). I'm still vague about the effect of 37.Rxf4 Qg5+; 38.Rg4 (noting <patzer2>'s comment from years back) - the White Ps seem to present a threat which prolongs the game. But then ...Qe2 would have been an "unheard melody". |
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| Feb-01-19 | | RandomVisitor: <Everette> writes above from 15 years ago: <About the daily problem...> To offer "true" sacrifices (ie. ones that sacrifice material for time/initiative and/or position with nebulous ultimate consequences) will be HARD for many, perhaps too hard. Many of us are still working on the tactical blow, the lethal shot, and how to avoid them. Still I see the points made above. To mix it up with a deep strategic move or a "true" sacrifice would be interesting, but certainly not all the time. For some it would drive us crazy... <Maybe they can do a graduated one, with Monday being the easiest tactical shots and by Sunday giving us a Kasparov Najdorf at the crucial, initiative-shifting blow...>> Seems like a prediction that came true... |
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| Feb-01-19 | | schachfuchs: White's best defence would have been:
1) -2.16 (22 ply) 36...Rxf4 37.Rxf4 Qg5+ 38.Rg4 Bxg4 39.Nxg4 Qxg4+ 40.Kf1 Kf7 41.b6 Qh3+ 42.Ke1 Qa3 43.Qf2+ Ke8 44.Qf4 Qc3+ 45.Kf1 e5 46.Qh6 Qxc5 47.Qe6+ Qe7 48.Qxd5 Qf7+ 49.Qxf7+ Kxf7 50.Ke2 Ke6 51.Kf2 Kd6 52.Ke3 Kd5 53.h3 h6 54.Kf26 second analysis by Stockfish 9 |
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| Feb-01-19 | | 1stboard: How does white defend after black plays 37 e3 ?? I see no defense to blacks threat of Qd1. Can someone run this though a chess engine ?
That being said , Dr. Alekhine's move is stunning. |
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| Feb-01-19 | | greenfield67: Missed 37...Qe2. I think 37...Qg5+ 38.Kh1 Rg4 still wins, though. And because it looked like a puzzle solution (offering the rook to get the queen to the back rank), I stopped looking for better options. |
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| Feb-01-19 | | King Harvest: @<1stboard>
I didn't run it through a chess engine so check my work but I don't think 37.e3 is an alternate solution. 37...e3 38.Qxf4 exf2+ 39.Kxf2 (not 39. Qxf2? Qd1+ with mate to follow) and I think black has serious problems. and 37...e3 38.Qxf4 Qd1+ 39.Rf1 e2 might look sexy for a moment but hangs mate in two...
40.Qf7+ Kh8 41. Qf8# (white also has this tactic in other variations not given in this analysis). |
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| Feb-01-19 | | Carlos0012358: No sure who Rotunno is but 37.c6 instead of the obvious 37.Rxf4 is a knucklehead move. |
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| Feb-01-19 | | thegoodanarchist: Missed it.
I'm no Alekhine! |
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| Feb-01-19 | | Patriot: There were so many options here I don't believe you can study how the pieces are aligned and conclude move X is the answer. You have to try them. I used to just start analyzing checks, captures, and threats. But that sometimes means you would have to calculate like a machine which isn't possible because there are too many permutations. Now I look at how pieces are aligned before looking at any CCT's. If nothing really stands out it doesn't hurt to look at CCT's. I found 37...Qe2 but not immediately. |
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Feb-01-19
 | | Jimfromprovidence: I got 37...Qg5+ 38 Kh1 Rf7! (or 38...Rf5 or 38...Rf6)
click for larger viewMoving the rook unveils the threat 39...Qc1+ with mate to follow or if 39 Rxf7 then 39...Qg2# I can't find a defense for white. |
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| Feb-01-19 | | ChessHigherCat: Welcome back Random Visitor:
< ..."true" sacrifices (ie. ones that sacrifice material for time/initiative and/or position with nebulous ultimate consequences) ...> That sounds like the definition of "speculative sacrifices", not of sacrifices in general. For example, if you sac the Q in exchange for a pawn at the start of a 4-move mating combination, it's still considered a true sacrifice, isn't it? |
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| Feb-01-19 | | patzer2: White's decisive mistake was 34. Rg1??, allowing 34...Rxg1+ 35. Kxg1 Bh3! -+. Instead, 34. Rff1 =, 34. cxd4 = or 34. Rg2 = holds the position level. Earlier, 27. fxg5 Rxg5 28. Rf4 ⩲ would have blunted Black's attacking initiative and given White a slight edge. P.S. In today's Friday puzzle position, the winning options are the game move 37...Qe2!! or the much discussed 37...Qg5+ 38. Kh1 followed by 38...Rf5 -+, 38...Rf6 -+ or 38...Rf7 -+. |
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| Feb-01-19 | | RandomVisitor: <Calli> in 2006 suggested 32.Rd2, but 32.dxc5 also is good for white:
click for larger viewStockfish_19020116_x64_modern:
<34/62 +3.63 32.dxc5> Qd1+ 33.Kg2 h5 34.Qd2 Qb1 35.Qb2 Qe1 36.Re2 Qb4 37.Qxb4 axb4 38.Rb3 h4 39.cxd5 exd5 40.Rxb4 hxg3 41.hxg3 Bc8 42.Rd4 Be6 43.Kf2 Rf6 44.c6 bxc6 45.Nxc6 Rh6 46.Nb4 Rh2+ 47.Ke1 Rh1+ 48.Kd2 Ra1 49.Nxd5 Rxg3 50.Nf6+ Kf7 51.Nxe4 Ra2+ 52.Ke1 Rg1+ 53.Kf2 34/48 +1.34 32.Rd2 cxd4 33.Qxd4 e3 34.Qxe3 Be4+ 35.Kg1 Qf5 36.c5 h5 37.Qf2 Qxf4 38.Qxf4 Rxf4 39.c6 bxc6 40.Nxc6 Rf8 41.Rf2 Rc8 42.Ra1 h4 43.Ra3 d4 44.Nxd4 e5 45.Re2 Rc1+ 46.Kf2 Rf7+ 47.Nf3 Rc4 48.gxh4 Bxf3 49.Rxf3 Rxh4 50.Rxe5 Rxa4 |
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| Feb-01-19 | | RandomVisitor: <ChessHigherCat>It seems that a sacrifice in general is where you give up some material, initially. The compensation can be either calculated and forced (a true sacrifice), positional or even unclear. There was aparently a time back in 2004 when the structure of the daily puzzle was not as planned as it is today, with the problems mostly tactical, and graded by difficulty and the day of the week. Perhaps Everett's comment, and the one below, were the founding ideas which created the "daily puzzle" as we know it today: Dick Brain: <Everett> I'd rather that it stayed with combinations that quickly lead to material advantage or mate within four moves or so just so long as they aren't too easy. They are beneficial for all strength players. Strategic sacrifices are often controversial where no consensus can be made sometimes even years after they are played. |
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