Wednesday, March 23, 2005
Yeah, Yeah...
I have another brain part to add to the list. It's the one that says, "yeah, yeah, ... I know that". Normally silent, it conveniently asserts itself after I first get a problem wrong, go get a hint, think about it for awhile, and then figure out the correct move. I say don't believe that part or take it seriously! It knows of tactics, and that's about it. It's my inner patzer, and it can't play worth sh*t.
Now to pick on another grandmaster. If you have Sierawan's Winning Chess Tactics, the answer on test 134 is not quite the best line. I was thinking I had it, read the answer and found he started in a different move order which made me think I miscalculated, and later discovered that the computer liked my original move order better. Arg. I'll post my line in the comments.
TCT Circle 1 Progress:
Not completed exercises: step 1 , lessons: [ 1.2.3.4.9.14. ]
Result step 1: Average score 97 %
Not completed exercises: step 2 , lessons: [ 11.12. ]
Result step 2: Average score 93 %
In circle 2 of problems 204-218
Now to pick on another grandmaster. If you have Sierawan's Winning Chess Tactics, the answer on test 134 is not quite the best line. I was thinking I had it, read the answer and found he started in a different move order which made me think I miscalculated, and later discovered that the computer liked my original move order better. Arg. I'll post my line in the comments.
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TCT Circle 1 Progress:
Not completed exercises: step 1 , lessons: [ 1.2.3.4.9.14. ]
Result step 1: Average score 97 %
Not completed exercises: step 2 , lessons: [ 11.12. ]
Result step 2: Average score 93 %
In circle 2 of problems 204-218
Comments:
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1..Rxc3?? 2.Bf4!! threatening Rd8+ is a more potent move order, and after trades leaves White an extra rook rather than an extra Bishop.
The worst continuation would be
2.. Rxc2?? 3.Rd8+ Bf8 4.Bh6 +-, which is practically mate.
Slghtly better ideas are
2.. h5?! 3.Qxc3 Qb1+ 4.Kh2 +-,
2..g5 3.Rd8+ Bf8 4.Qxc3 gxf4 5.Qc8 Qb1+ 6.Kh2 Kg7 7.Rxf8 +-,
2..f6 3.Rd8+ Kf7 4.Qxc3 fxe5 5.Bxe5 Qa1+ 6.Kh2 Bxe5+ 7.Qxe5 +-, and
2.. Qa1+ 3.Kh2 Rxh3+ 4.gxh3 h6 5.Rd8+ Kh7 6.Qb3 Qe1 7.Bg3 e6 8.Qxb7 Qa5 9.Rc8 Qd2 10.Qxf7 h5 11.h4 a5 12.Qg8+ Kh6 13.Rc7 Qxf2+ 14.Bxf2 Bxe5+ 15.Kg2 Bxc7 16.Qh8#.
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The worst continuation would be
2.. Rxc2?? 3.Rd8+ Bf8 4.Bh6 +-, which is practically mate.
Slghtly better ideas are
2.. h5?! 3.Qxc3 Qb1+ 4.Kh2 +-,
2..g5 3.Rd8+ Bf8 4.Qxc3 gxf4 5.Qc8 Qb1+ 6.Kh2 Kg7 7.Rxf8 +-,
2..f6 3.Rd8+ Kf7 4.Qxc3 fxe5 5.Bxe5 Qa1+ 6.Kh2 Bxe5+ 7.Qxe5 +-, and
2.. Qa1+ 3.Kh2 Rxh3+ 4.gxh3 h6 5.Rd8+ Kh7 6.Qb3 Qe1 7.Bg3 e6 8.Qxb7 Qa5 9.Rc8 Qd2 10.Qxf7 h5 11.h4 a5 12.Qg8+ Kh6 13.Rc7 Qxf2+ 14.Bxf2 Bxe5+ 15.Kg2 Bxc7 16.Qh8#.
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