Ace of Spades Pet Thread | Main | Right In The Foot
February 18, 2017

Saturday Afternoon Chess/Open Thread 02-18-2017

battle_chess_by_cean_herzfield.jpg
Battle Chess by Cean Herzfield

(This week's chess pic is way too small. Click on it to see a much better version)


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. 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 giant food fight. Unless you've just gone off your diet.


“In a gambit you give up a Pawn for the sake of getting a lost game”
(Samuel Standige Boden)

This is the story of my life in chess. At one time I thought I would like to be a gambit player, but every time I tried this or that gambit, I would somehow never be able to recover the pawn. Or I would fritter away whatever small positional advantage the theory said I supposedly had. So I would go into the endgame down a pawn, and then lose because, well, I was down a pawn. So enough of gambits. They do not suit my temperament.


Problem 1 - White To Play (112)

Hint: White mates in 3


20170218 - Problem 1.jpg
6Q1/8/5k2/6p1/1KB1pq1P/8/6p1/8 w - - 0 1


Problem 2 - White To Play (105)

Hint: Forced mate in 4


20170218 - Problem 2.jpg
8/1K5Q/3B4/8/8/8/4p1k1/5q2 w - - 0 1


Problem 3 - Black To Play (260)

There is more than one pathway here. See how many you can find.

Hint: Black mates in 3 - 3 different ways


20170218 - Problem 3.jpg
8/4rk2/5n2/1Q2pp1p/7P/2R1bb2/r5PK/7R b - - 0 1


Problem 4 - White To Play (167)

Hint: White wins material


20170218 - Problem 4.jpg
2kr3r/pb3pp1/4pn1p/2p5/8/1R1B4/P1Q2PPq/2B1RK2 w - - 0 1


Heh


Endgame of the Week (405)

It's Black's move. Can he win in this position, or must he settle for a draw? Show your work.


20170218 - Endgame.jpg
4k3/1p2p2p/1P1p3B/1p6/3P4/4PP2/6P1/1b4K1 b - - 0 1


___________

Solutions Update

Problem 1 - White To Play


20170218 - Problem 1.jpg
6Q1/8/5k2/6p1/1KB1pq1P/8/6p1/8 w - - 0 1

1.Qf7+ Ke5
2.Qe7+

And that was the tricky move. You have to see that if 2.Qe6+ then 2...Kd4 3.Qd5+ Ke3 and the enemy king slips away on the dark squares.

3...Kd4
3.Qc5# 1-0


Problem 2 - White To Play


20170218 - Problem 2.jpg
8/1K5Q/3B4/8/8/8/4p1k1/5q2 w - - 0 1

Every Black move is forced, no alternative.

1.Qh2+ Kf3
2.Qf4+ Kg2
3.Qg3+ Kh1
4.Qh2#


Problem 3 - Black To Play


20170218 - Problem 3.jpg
8/4rk2/5n2/1Q2pp1p/7P/2R1bb2/r5PK/7R b - - 0 1

There are 3 different ways to mate in 3, but they all start with:

1...Ng4+!

Couple of possibilities for White's response here. If 2.Kh3 then 2...Bxg2+ 3.Kg3 Bf4#. This is the first solution. The other possible response is

2.Kg3 f4+
3.Kxf3 (or 3.Kh3 Bxg2#, the third solution)
3...e4# (the second solution)


Problem 4 - White To Play


20170218 - Problem 4.jpg
2kr3r/pb3pp1/4pn1p/2p5/8/1R1B4/P1Q2PPq/2B1RK2 w - - 0 1

1. Qxc5+ Qc7

Best. If 1...Kb8 then it's mate in 7: 2.Rxb7+ Kxb7 3.Qb5+ Ka8 4.Qc6+ Kb8 5.Bf4+ Qxf4 6.Rb1+ Qb4 7. Rxb4#.

Or, even worse, 1...Kd7 2.Rxb7+ Ke8 3.Qe7#.

2.Qxc7+ Kxc7
3.Bf4+ Kd7
4.Rxb7+ and White picks off the bishop.


Endgame of the Week


20170218 - Endgame.jpg
4k3/1p2p2p/1P1p3B/1p6/3P4/4PP2/6P1/1b4K1 b - - 0 1

So... what can Black do?

In this position, his passed 'b' pawn is his chief asset. So the question is, what happens if he just starts advancing it? What countermeasures are available to White?

1...b4
2.Kf2 b3
3.Ke2 b2
4.Kd2 Bg6

So, White's king doesn't have time to get over there and stop the pawn.

Is there anything else White can do to speed up the defense? Yes. He can advance the 'e' pawn to open up the diagonal for his bishop.

1...b4
2.e4! b3
3. Bc1

And the Black pawn is stymied. So, knowing all this. Is there a Black countermeasure for the White countermeasure, that will prevent him from advancing the 'e' pawn? Yes:

1...Be4!

Given that 2.fxe4 will gum up things in the center pretty good, White should look at alternatives. 2.Bg7 followed by 3.d5 looks promising, but now the bishop is within the Black king's striking distance:

2.Bg7 Kf7
3.Bh8 Kg8

And White will lose the trapped bishop. So 2.Bg7 is no good.

White's king is still out of range, so this still won't work, either:

2.Kf2 b4
3.Ke2 b3
4.Kd2 b2

So all that's left is taking the bishop:

2.fxe4 b4
3.d5 Kf7

As in the earlier line, this Move prevents Bg7 by White. Black's passed pawn is now unstoppable. Play might continue:

4.e5 b3
5.exd6 exd6

And White is in a resignable position.

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 05:03 PM

| Access Comments




Recent Comments
booknlass: "There was an element of Hitchcock's voyerism and o ..."

Gordon: "As promised, Pomegranate Salsa Do not wear whi ..."

the guy that moves pianos for a living: "Dawn of Man is my favorite part of 2001. When Star ..."

Aetius451AD: "King Kong is Jewish? Who knew? Posted by: All Hai ..."

qdpsteve: "Primordial, what do you think of that scene? ..."

Hairyback Guy: "So let's talk about Yaphet Kotto ... wait ... neve ..."

logprof: "Malcolm Young was not so young. ..."

qdpsteve: "Gundrop, yup! ..."

Aetius451AD: "625 Kim Novak She up & quit Hollywood. Too b ..."

ThePrimordialOrderedPair: "[i]The opening scene in 2001, with the apes/neande ..."

Gundrop Gorilla is in trouble bubble: "Kim Novak She up & quit Hollywood. Too bad t ..."

All Hail Eris, She-Wolf of the 'Ettes 'Ettes: "Anyone else notice all the actors discussed in thi ..."

Recent Entries
Search


MuNuvians
Polls! Polls! Polls!
Frequently Asked Questions
The (Almost) Complete Paul Anka Integrity Kick
Top Top Tens
Greatest Hitjobs

The Ace of Spades HQ Sex-for-Money Skankathon
A D&D Guide to the Democratic Candidates
Margaret Cho: Just Not Funny
More Margaret Cho Abuse
Margaret Cho: Still Not Funny
Iraqi Prisoner Claims He Was Raped... By Woman
Wonkette Announces "Morning Zoo" Format
John Kerry's "Plan" Causes Surrender of Moqtada al-Sadr's Militia
World Muslim Leaders Apologize for Nick Berg's Beheading
Michael Moore Goes on Lunchtime Manhattan Death-Spree
Milestone: Oliver Willis Posts 400th "Fake News Article" Referencing Britney Spears
Liberal Economists Rue a "New Decade of Greed"
Artificial Insouciance: Maureen Dowd's Word Processor Revolts Against Her Numbing Imbecility
Intelligence Officials Eye Blogs for Tips
They Done Found Us Out, Cletus: Intrepid Internet Detective Figures Out Our Master Plan
Shock: Josh Marshall Almost Mentions Sarin Discovery in Iraq
Leather-Clad Biker Freaks Terrorize Australian Town
When Clinton Was President, Torture Was Cool
What Wonkette Means When She Explains What Tina Brown Means
Wonkette's Stand-Up Act
Wankette HQ Gay-Rumors Du Jour
Here's What's Bugging Me: Goose and Slider
My Own Micah Wright Style Confession of Dishonesty
Outraged "Conservatives" React to the FMA
An On-Line Impression of Dennis Miller Having Sex with a Kodiak Bear
The Story the Rightwing Media Refuses to Report!
Our Lunch with David "Glengarry Glen Ross" Mamet
The House of Love: Paul Krugman
A Michael Moore Mystery (TM)
The Dowd-O-Matic!
Liberal Consistency and Other Myths
Kepler's Laws of Liberal Media Bias
John Kerry-- The Splunge! Candidate
"Divisive" Politics & "Attacks on Patriotism" (very long)
The Donkey ("The Raven" parody)
News/Chat
Archives
Powered by
Movable Type 2.64