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April 28, 2018
Chess Thread 04-28-2018
Easier Problem - Black To Play (569)
Hint: White is weak on the back rank
kr1r4/8/8/8/8/b7/PBR5/1K6 b - - 0 1
The Dawn Prayer
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More Challenging Problem - White To Play (649)
Hint: Two advanced pawns > 1 rook
5r2/8/4RbP1/5P1K/8/8/8/5k2 w - - 0 1
Dress Pr0n For the 'Ettes:
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Solutions Update
Easier Problem - Black To Play
kr1r4/8/8/8/8/b7/PBR5/1K6 b - - 0 1
1...Rd1+
Premature is 1...Rxb2+ because then 2.Rxb2 Rd1+ 3.Kc2
2.Rc1 Rxb2+
3.Ka1 Rxc1# mate in 3.
More Challenging Problem - White To Play
5r2/8/4RbP1/5P1K/8/8/8/5k2 w - - 0 1
1.Rxf6 Rxf6
2.Kg5
White must not be hasty with an immediate 2.g7 because 2...Rxf5+ 3.Kg6 Rf2 4.Kh6 Rh2+ 5.Kg6 Rg2+ 6.Kf7 Rxg7+ 7.Kxg7 and the win has slipped through his fingers.
2...Rc6
3.f6 Rc5+
4.Kh6 Rf5
5.f7 Ke2
6.Kg7 Rc5
This is where the advantage of having two advanced pawns becomes appparent. White doesn't have to worry about avoiding pins or skewers because he's happy to trade a new queen for Black's last rook. And then he can queen his remaining pawn unopposed. Which is infinitely better than getting bogged down in a KQ vs. KR endgame.
7.f8=Q Rc1
8.Qe7+ Kf2
9.Kf8 Rc8+
10.Qe8 Rc3
11.g7 Rf3+
12.Qf7 Kg3
13.Qxf3+ Kxf3
14.g8=Q and wins
Hope to see you all next week!
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Note: that cryptic line of letters and numbers you see underneath each board diagram is a representation of the position in what is known as "Forsyth-Edwards Notation", or F.E.N. It's actually readable by humans. Most computer applications nowadays can read FEN, so those of you who may want to study the position, you can copy the line of FEN and paste into your chess app and it should automatically recreate the position on its display board. Or, Windows users can just "triple click" on it and the entire line will be highlighted so you can copy and past it into your chess app.
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So that about wraps it up for this week. Chess thread tips, suggestions, bribes, rumors, threats, and insults may be sent to my yahoo address: OregonMuse little-a-in-a-circle yahoo dott com.
posted by OregonMuse at
05:10 PM
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