24 Jul 10
2 edits
My first instinct was Ke3, but I'm sure the point is to find a tactic, so I'll keep looking!
Edit: It's black to move, so I'm subtracting 100 points from my rating and starting over.:
Second edit: I'm thinking ...Qd1, pinning the rook to the white queen, and if the queen moves of the diagonal, there is the threat of ...Rxg2, as the white king would be overloaded protecting both rooks.
24 Jul 10
1 edit
Originally posted by amolv06In quickplay Rh6 forcing my opponent to mate me.
I played a 3/0 on FICS recently, and the following position came up:
[fen]6k1/6pp/3r2r1/pp3p1Q/3PpP2/PqP5/1P2RKRP/8 b - - 0 33[/fen]
Black to move.
This was extremely difficult to find the right move for me. Even after analysis with a computer, it's hard for me to see.
...
Is Qf7 any good?
24 Jul 10
Originally posted by Paul LeggettLol :p
Edit: It's black to move, so I'm subtracting 100 points from my rating and starting over.:
Nothing that has been posted so far is Rybka's first choice. Qd1 seems to be winning, but there is apparently a more direct route in Rybka's opinion. I played Qf7 in game.
25 Jul 10
Originally posted by amolv06I don't know if this will help, but these are the "abstract features" that go through my mind before I start to calculate:
Rg2 was the correct move. It seems to lead to a rook for queen trade at some point in the future if you play very accurately, or the loss of his rook, but the continuation is not obvious at all to me.
1. White's queen is a loose piece, subject to a discovered attack.
2. White's rook and queen are on the same diagonal, so a pin can be very effective with the queen being loose.
3. White's king is overloaded in that he is protecting both rooks at the same time, so if the king is compelled to recapture one rook, the other is immediately hanging.
4. Black's e-pawn is a runner, and it can make a timely check by moving to e3 which could be very strong tactically.
5. I haven't really "soaked in" the position from the perspective of the ending, but as black I would want to pick off one more pawn or at least keep one rook on the board before I would venture into the endgame with a win in mind. I could be "off" on that, though, as I am looking at it very superficially.
I see these as the essential ingredients of the position, which potentially can be combined into a winning recipe. At this point I would begin the critical move-by-move analysis to find the right order.
In an OTB game I would play whichever line I was most certain to win for me and prevent counterplay, so I would normally play the first line for me that "worked", which may not be the shortest. In CC we have the luxury of going over every permutation with far more time available.
I don't know if this helps, as every person is different in how they approach things, but this is what I see when I look at the position.
25 Jul 10
Not so clearly. Not to me, anyway.
Paul, thanks a lot for that explanation. I like to think in abstract ideas as well, and it really helps seeing some of the ideas a higher-rated player such as yourself applies in such a position. Of course, even keeping those ideas in mind, the calculation does not seem trivial to me.