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by Your Raving Roving Science Correspondent [Jay Guevara] »
March 13, 2021

Saturday Afternoon Chess thread 03-13-2021

WFM Damaris Abarca Gonzalez CHL 01.jpg
WFM Damaris Abarca Gonzalez (CHL)

Moviegique's movie thread will be coming up later. As always, the chess/dress pr0n thread is an open thread, so there is no such thing as an off-topic comment.

Beginner Problem - Black To Play (1327)

Goal: Black to force mate in 2 moves
Hint: Underpromotion is not requred

For extra credit, find a checkmate that uses underpromotion. You will need to take an extra move.

20210313 - Problem 1.jpg
1q4k1/6pp/2B1p1r1/3p3b/3NP3/3Q3P/Pr4p1/RR4K1 b - - 0 1

chess pic 20210313 01.jpg

Intermediate Problem - White To Play (1306)

Goal: White can force mate in 4 moves
Hint: This is one of those positions I call 'zugzwangy'

20210313 - Problem 2.jpg
8/8/7p/5Kbk/6p1/8/6P1/R7 w - - 0 1

Advanced Problem - White To Play (1321)

Find the mating lines. How long can Black hold out?

20210313 - Problem 3.jpg
r7/p4k2/1b3B2/3pP3/4qPQ1/8/2P3PP/5b1K w - - 0 1

Dress Pr0n For The 'Ettes:

20210313 dress pr0n 01.jpg

20210313 dress pr0n 02.jpg

20210313 dress pr0n 03.jpg

20210313 dress pr0n 04.jpg
This is a pic of 'ette April, who e-mailed it to me last week. She tells me:

[I]t's a lovely dress (and it still fits!) , and a fun memory for me...black rayon crepe...with a white satin neckline overlaid with black lace, and bordered with black velvet. I estimate the vintage to be '40's.

20210313 dress pr0n iceland 01.jpg
Iceland Sweater Girl #1

20210313 dress pr0n iceland 02.jpg
Iceland Sweater Girl #2

20210313 dress pr0n kate 01.jpg

20210313 dress pr0n melania 01.jpg
(I've shown this yellow dress before, but I've never found a photo of it where she's smiling. Until now.)


Problem Solutions

Beginner Problem - Black To Play

20210313 - Problem 1.jpg
1q4k1/6pp/2B1p1r1/3p3b/3NP3/3Q3P/Pr4p1/RR4K1 b - - 0 1

2.Kxh2 g1=Q#

or, if you want to use touch of elegance, you can win with an underpromotion: 2...g1=B+ 3.Kh1 Rh2#

Intermediate Problem - White To Play

20210313 - Problem 2.jpg
8/8/7p/5Kbk/6p1/8/6P1/R7 w - - 0 1

1.Rh1+ Bh4
2.Rh3 g3

If 2...gxh3 then 3.g4#

3.Rh2 gxh2

Advanced Problem - White To Play

20210313 - Problem 3.jpg
r7/p4k2/1b3B2/3pP3/4qPQ1/8/2P3PP/5b1K w - - 0 1

It's basically a king hunt, but you can force mate in 5:

1.Qd7+ Kg6

Not 1...Kf8? 2.Qe7+ Kg8 3.Qg7#


At this point,there are 2 mate-in-5 lines, and a mate-in-4:

2...Kh6 3.Qg7+ Kh5 4.Qg5#


2...Kh5 3.Qf7+ Kg4 4.Qg6+ Kf4 5.Qg5#


2...Qxf5 3.Qg7+ Kh5 4.g4+ Qxg4 5.Qh7#

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 paste 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 05:38 PM

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