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July 01, 2017

Saturday Afternoon Chess/Open Thread (Featuring Dress Pr0n) 07-01-2017


The Chess Players, illustration from Through the Looking Glass, 1871.jpg
The Chess Players by John Tenniel
(Illustration from Through the Looking-Glass, and What Alice Found There, 1871)

Good afternoon morons and moronettes, and welcome to the Saturday Afternoon Chess/Open Thread, the only AoSHQ thread with content specifically for all of us chess nerds who pay homage in the temple of Caïssa, goddess of the chessboard. Also, dress pr0n. Each week, I pick out a few lovely, modest, conservative dresses for the 'ettes to admire and appraise. And, for those of you who aren't nerdly enough for chess, you can use this thread to talk about checkers, or other games, or politics, or whatever you wish, only please try to keep it civil. Nobody wants to get in the middle of a fish fight on a Saturday afternoon.


Problem 1 - White To Play (510)

Hint: White mates in 2


20170701 - Problem 1.jpg
6r1/5pk1/5p2/1p2bP2/1P5R/2q1BBPP/5PK1/r7 w - - 0 1


Problem 2 - Black To Play (BWTC 215)

Hint: Black mates in 3


20170701 - Problem 2.jpg
7k/p4q1p/1pb5/2p5/4B2Q/2P1B3/P6P/7K b - - 0 1


Problem 3 - White To Play (498 )

Hint: White wins material


20170701 - Problem 3.jpg
7k/5qpp/1p1P2n1/2p5/P7/1PQ4P/1B6/7K w - - 0 1


Problem 4 - Black To Play (286)

Hint: Black wins material


20170701 - Problem 4.jpg
Q4nk1/1pq2pp1/3p1B1p/1B1P4/8/2P2b2/P4PrP/4RK2 b - - 0 1


Endgame of the Week (Endgame 32)

It's White to play. Can he do better than just swapping his rook for Black's advanced pawn to achieve a draw?


20170701- Endgame.jpg
8/8/8/3K4/4R3/p7/8/1k6 w - - 0 1


Dress Pr0n For The 'Ettes

20170701 princess pahlavi.jpg
Iranian Princess Fatimeh Pahlavi, 1950s

(h/t History in Moments on Twitter)


20170701 dress pr0n 10.jpg


20170701 dress pr0n 11.jpg

___________

Solutions Update

Problem 1 - White To Play


20170701 - Problem 1.jpg
6r1/5pk1/5p2/1p2bP2/1P5R/2q1BBPP/5PK1/r7 w - - 0 1

1.Bh6+!

Black has two options, either one will prompt the same move by White:

Option #1: 1...Kh8 2. Bf8#
Option #2: 1...Kh7 2.Bf8#


Problem 2 - Black To Play


20170701 - Problem 2.jpg
7k/p4q1p/1pb5/2p5/4B2Q/2P1B3/P6P/7K b - - 0 1

1...Qf1+!

Not 1...Bxe4? because 2.Qxe4.

2.Bg1 Qf3+
3.Bxf3 Bxf3#

Sometimes the moves are easily "see-able", but you've got to get them in the right sequence for the plan to succeed.


Problem 3 - White To Play


20170701 - Problem 3.jpg
7k/5qpp/1p1P2n1/2p5/P7/1PQ4P/1B6/7K w - - 0 1


Another game won due to adroit simplification

1.Qxg7+ Qxg7
2.Bxg7+ Kxg7
3.d7

And there's no way Black can stop the pawn from queening.


Problem 4 - Black To Play


20170701 - Problem 4.jpg
Q4nk1/1pq2pp1/3p1B1p/1B1P4/8/2P2b2/P4PrP/4RK2 b - - 0 1

This position is very double-edged. If it were White's move, the game would end quickly with 1.Qxf8+ Kxf8 2.Re8#. But it's Black's move, and he's threatening Rxh2 followed by Rh1#. Of course, he can't play Rxh2 immediately due to White's response Qxf8+, so he's got to seize the initiative some other way.

1...Qc4+
2.Bxc4

And now with the bishop displaced from supporting a rook move to e8, Black can begin his attack.

2...Rxh2

Threatening Rh1 mate. White has no choice but to sacrifice piece after piece.

3.Qxf8+ Kxf8
4.Re8+ Kxe8
5.Ke1

And now White can escape the rook check.

5...Rh1+
6.Kd2 gxf6

...but he loses material. And now Black should win.


Endgame of the Week

It's White to play. Can he do better than just swapping his rook for Black's advanced pawn to achieve a draw?

Hint:


20170701- Endgame.jpg
8/8/8/3K4/4R3/p7/8/1k6 w - - 0 1

1.Kc4

The idea behind this move is 1...a2 2.Kb3 and now if 2...a1=Q then 3.Re1#

1...a2

There really isn't another move.

2.Kb3

And now

2...a1=N+!

Which avoids the trap mentioned above. But is it enough?

3.Kc3 Nc2
4.Re2

And now Black needs to move the knight or lose it. But there is only one square for him to move it to.


4...Na3
5.Kb3

Now Black either has to move his king to avoid the immediate 6.Re1# or save the knight. He cannot do both.

Either:

5...Nb5
6.Re1#

Or:

5...Kc1
6.Kxa3 Kd1
7.Rh2 and mate to follow shortly

Hope to see you all next week!


___________

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.

___________

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.

digg this
posted by OregonMuse at 05:11 PM

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