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| Feb-15-10 | | 310metaltrader: This is a nice tuesday puzzle. The bishop move uncovers a queen attack and buys a huge tempo. |
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| Feb-23-10 | | dzechiel: Black to move (32...?). Black is up a pawn. "Easy." It took me a few moments to find the right square for the bishop, but finally I spotted 32...Bd1
Uncovering an attack on the white queen.
33 Qa1
Other moves are no better. 33 Qxb7 is met with 33...Qf1+ anyway, and 33 Rxd1 Rxb2 34 Rxd6 Qxd6 leaves white down a queen for a bishop. 33...Qf1+ 34 Rg1 Bf3#
A very tidy ending for Mancini. |
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Feb-23-10
 | | Jimfromprovidence: I posted this puzzle on my forum page, just over a week ago. It's a clever puzzle, from the February 14 Los Angeles Times. Enjoy. |
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| Feb-23-10 | | Quentinc: Yes, I remember it from the LA Times. I had seen yesterday's puzzle somewhere else earlier too. I'm keeping my fingers crossed on tomorrow's. |
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| Feb-23-10 | | remolino: 32...Bd1 |
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| Feb-23-10 | | whitebeach: 32 . . . Bd1 is one of those intuitive moves, by which I mean you don't have to parse all the variations, you just know the minute you see it that it wins. |
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| Feb-23-10 | | mrsaturdaypants: I may be making this just a little too complicated for a Tuesday, but I want to play 32...Bd1, discovering an attack on white's queen while providing cover for black's own queen to come to f1 with check. So, if 33 Qa1, then 33...Qf1+ 34 Rg1 Bf3# is a fun ending. 33 Qxb7 ends the same way.
33 Rxd1 Rxb2
33 Nxd1 Rxd1+ 34 Rxd1 Rxb2
Time to check. |
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Feb-23-10
 | | gawain: As is often the case, this was easier to solve as a puzzle than it would have been to see over the board. Somehow Black must get in the move ...Qf1+.
And this requires (because this is a <puzzle>, after all!) not only that the f1 square be protected from White's c1 rook, but that B be able to follow up, after White's Rg1,with a killer move of some sort. And this killer move can only be Bf3#. So the bishop must have moved to d1 first, and--yes--this works because the bishop move discovers an attack on the W queen. Voila. |
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| Feb-23-10 | | Formula7: Got it. 32...Bd1 wins the queen, for if 33.Qa1/Qa2 then Qf1+ 34.Rg1 Bf3# |
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| Feb-23-10 | | Jane Sanders: A question: Why is this game in the database? I was reading the rules for game inclusion last week and it said that one of the players had to be at least 2200 Elo for a game to be included. |
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| Feb-23-10 | | patzer2: Black's 32...Bd1! begins a mating attack, which initially combines a discovered attack and interference tactic, to solve today's Tuesday puzzle. The followup 33...Qf1+ 34. Rg1 Bf3#, adds the deflection (removing Rook's guard over f3), decoy (forcing Rook to g1) and pin tactics to force the final mate position (i.e. 34...Bf3#). |
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| Feb-23-10 | | lost in space: 21...Bd1! 22. Qa1 or Qa2 (only moves not losing directly) 22...Qf1+ 23. Rg1 (only move) 23...Bf3#
Nice! |
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| Feb-23-10 | | sethoflagos: 'Best' continuation for white appears to be
32 ... Bd1
33 Nxd1 Rxd1+
34 Rxd1 Rxb2 |
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| Feb-23-10 | | Once: <Jane Sanders: A question: Why is this game in the database?> That's a question which has come up several times before. I don't recall chessgames.com giving a formal response, but the answer seems to be that the rules have been relaxed. I supppose the idea is to include games that might be interesting even if not of the highest quality. |
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| Feb-23-10 | | johnlspouge: Tuesday (Easy)
S Horrocks vs G Mancini, 2010 (32...?) Black to play and win.
Material: B+P for N. The White Kh1 has 2 legal moves, but the tactical tension is on the Q-side. The Black Rb7 x-rays Qb2 through Bb3, suggesting a discovered attack with Bb3. The usual problem with a discovered attack is to decide which the best square to move to. White has some back-rank weakness, suggesting an interference against the White Rc1. The Black Kf8 is secured from check. Candidates (32...): Bd1
32...Bd1 33.Qa1 or Qa2 or Qxb7 [Rxd1 Rxb2 wins Q for B] 33...Qf1+ 34.Rg1 Bf3# |
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| Feb-23-10 | | Once: We start the puzzle with a loaded gun and a rottweiler on a leash. The loaded gun is Rb7/Bb3 battery aimed at the white queen. Move the bishop away and the queen is attacked. That gives us a free bishop move, but where to put it? The rottweiler is the black queen on a6 staring down at the juicy f1 square. The leash is the white Rc1, which is currently the only thing defending f1. Combining those two ideas gives us the game continuation: 32...Bd1 (attacking the Qb2 and blocking the Rc1's defence of f1). 33. Qa2 (or anyone else, really) Qf1+ (the queen check, as advertised) 34. Rg1 (only move) 35. Bf3# (using the fact that the Rg1 is now pinned and the white king is stalemated). It's a funny finish, with the bishop describing a perfect letter W as it carves its way across the board to deliver mate. This puzzle is one of those rare events - a combination that doesn't involve a sacrifice. And this could get us into one of our definition arguments. Some authors (eg Botvinnik) argue that a combination has to involve a sacrifice. Others say that a combination usually involves a sacrifice. The latter argument sounds right to me, but it is dangerous territory to dispute Botvinnik... |
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| Feb-23-10 | | SamAtoms1980: Even when you have the back rank guarded, you may not after all. 32 ... Bd1! attacks the queen and threatens 33 ... Qf1+ 34 Rg1 Bf3#. Note that on 33 Nxd1, Rxd1+! to keep White from getting both a rook and a knight for the queen. |
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| Feb-23-10 | | gofer: This one seems to be about a discovered attack on the white queen with the additional threat of mate, which
white is powerless to stop unless they give up the queen! 32 ... Bd1
33 Qa1/Qa2/Qxb7 Qf1+ 34 Rg1 Bf3#
33 Rxd1 Rxb2 winning
33 Nxd1 Rxd1+ 34 Rxd1 Rxb2 winning
Time to check... |
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| Feb-23-10 | | DarthStapler: Got it |
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| Feb-23-10 | | agb2002: Black has a bishop and a pawn for a knight. White would probably try to obtain some counter chances with g5 (Nxe4 is risky because it would open the long diagonal for Black's queen and bishop; the immediate Nxe4 would lose to Bd5). The black queen can invade White's field with 32... Bd1: A) 33.Qa1(2) Qf1+ 34.Rg1 Bf3#.
B) 33.Nxd1 Rxb2 (33... Qf1+ 34.Rg1 Qf3+ 35.Qg2 + - [N vs P]) 34.Nxb2 Rd2 35.Rg2 (35.Nd1 Qe2 - +) Rxg2 36.Kxg2 Qe2+ and 37... Qxb2 - + [Q+P vs R]. C) 33.Qxb7 Bf3+ 34.Rxf3 (34.Kg1 Qxb7 - + [Q+B+P vs R+N]) Qxb7 C.1) 35.Rg3 Qb2 36.Rf1 Qxc3 37.Nxe4 Qd3 38.Nxd6 Qxf1+ 39.Rg1 Qf3+ 40.Rg2 Qxe3 - + [Q+2P vs R+N]. C.2) 35.Rh3 Qb2 36.Rf1 Qxc3 37.Rxh7 (37.Nxe4 Qd3 38.Nxd6 Qxf1#) Qxe3 - + [Q+2P vs R+N]. |
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| Feb-23-10 | | agb2002: As <dzechiel> wrote, 33.Qxb7 doesn't stop 33... Qf1+ 34.Rg1 Bf3#. I probably forgot that after completing my line B. |
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| Feb-23-10 | | stacase: Black's Bishop can discover an attack on White's Queen, as I like to say, it's motor was running. So where to go? What to do while White gets his Queen out of hock? Oh yes ..... |
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| Feb-23-10 | | whiteshark: 32...Bd1, blocking the sq f1 defence as well as it's a discovered attack on Qb2. |
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| Feb-23-10 | | zooter: I got the idea in an instant but took a few minutes to verify how to work this out It's obvious that we need to use the discovered attack on the queen, but how? 32...Bd1 ends the game for white as both 32.Qa1/a2 33.Qf1+ Rg1 34.Bf3 leads to mate Time to check |
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| Feb-23-10 | | nuwanda:
it took me some time, quite a bit, to realize that 32...Bd1 opens up f1 for the black queen. after that, the rest is obvious ... |
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