Intermarkets' Privacy Policy Support
Donate to Ace of Spades HQ! Recent Entries
The Morning Report — 10/14/24
Daily Tech News 14 October 2024 Sunday Overnight Open Thread (10/13/24) Minimal Content Edition Gun Thread: Pre- TXMoMe Edition! Third Trump Assassination Thwarted Food Thread: Hummus! Is There A Pun To Be Made With Humus? No. First-World Problems... Tampon Timmy Does Another Failed "Make Me Look Normal" Event Sunday Morning Book Thread - 10-13-2024 ["Perfessor" Squirrel] Daily Tech News 13 October 2024 Absent Friends
Bandersnatch 2024
GnuBreed 2024 Captain Hate 2023 moon_over_vermont 2023 westminsterdogshow 2023 Ann Wilson(Empire1) 2022 Dave In Texas 2022 Jesse in D.C. 2022 OregonMuse 2022 redc1c4 2021 Tami 2021 Chavez the Hugo 2020 Ibguy 2020 Rickl 2019 Joffen 2014 AoSHQ Writers Group
A site for members of the Horde to post their stories seeking beta readers, editing help, brainstorming, and story ideas. Also to share links to potential publishing outlets, writing help sites, and videos posting tips to get published.
Contact OrangeEnt for info:
maildrop62 at proton dot me Cutting The Cord And Email Security
Moron Meet-Ups
|
« Ace of Spades Pet Thread [Mis. Hum.] |
Main
| Overnight Open Thread (16 Jul 2016) »
July 16, 2016
Saturday Afternoon Chess/Open Thread 07-16-2016 [OregonMuse]
“The winner of the game is the player who makes the next-to-last mistake”
FEN: [r1b2rk1/pppp2p1/8/3qPN1Q/8/8/P5PP/b1B2R1K w - - 0 19] After 18...Kg8 The answer to this problem is the final move of Kossak-Dufresne, Berlin, 1851, which you can look at in its entirety here. I urge you to do so. Kossak's furious attack after Dufresne's time-wasting 13...Bxa1 is fun to watch. White Mates in 3 FEN: [r2qk3/p4p1r/bp2pQp1/1n2P1Bp/7P/3P2N1/P1R2PP1/2R3K1 w q - 0 1] There is a well-known tactic called "removing the defender" wherein a piece that's defending another piece or a critical square is either traded off or pushed out of the way ("deflecting the defender"). You can use that tactic to solve this problem. Another hint: e7 is the critical square
The Immortal Game: A History of Chess by David Shenk is a good, general introduction to the game. One of the Amazon reviews does a good job explaining what it's all about: Those curious about chess and wishing to learn more about the game (but not too much more) will welcome this accessible, nontechnical introduction. Shenk (The Forgetting) succinctly surveys the game's history from its origins in fifth- or sixth-century Persia up to the present, touching along the way on such subjects as his own amateurish pursuit of the game, erratic geniuses like Paul Morphy and Bobby Fischer, chess in schools today, computer chess and his great-great-grandfather Samuel Rosenthal, who was an eminent player in late 19th-century Europe. To heighten the drama, Shenk intersperses the text with the moves of the so-called "immortal game," a brilliant example of "romantic" chess played between Adolf Anderssen and Lionel Kieseritzky in London in 1851. Appendixes include transcripts of five other great games, along with Benjamin Franklin's brief essay "The Morals of Chess." Readers will come away from this entertaining book with a strong sense of why chess has remained so popular over the ages and why its study still has much to tell us about the workings of the human mind.
FEN: [r4k2/4Rpnp/6p1/8/3N4/1pQ5/qr3PPK/4R3 w - - 0 1] Little bit tricky, because some of the moves aren't checks or forced responses to checks.
FEN: [K6Q/8/8/8/8/8/3pk3/8 w - - 0 1] White To Play And Win This type of endgame, where one player has a king and queen, and the other player only has a king plus one pawn, but the pawn is one move shy of queening, is one that is not uncommon in practical play. Perhaps you have seen it yourself in an endgame of your own. With some exceptions, White can generally win. If Black can succeed in queening the pawn, it's a draw. White, of course, needs to capture the pawn cleanly and not swap his queen for it. So he needs to bring his king up to help with the capture. To do this, White will deliver a series of checks that will eventually force Black's king to take refuge on d1, blocking the advance of the pawn. Then, and only then, will White be able to bring his king closer by a square. Then the process repeats. So to illustrate the technique, I'll get you started: 1.Qb2 Ke1 The purpose of this first move is to bring the queen closer to start the checks. Note that the pawn can't move, so the King must. 2.Qb4 Ke2 Black obviously does not want to be separated from his pawn by 2...Kf2 which allows 3.Qxd2 which wins, or 2...Kd1, which plays right in to White's hand (3.Kb7!) 3.Qe4+ Kf2 Again, not 3...Kd1 4.Kb7 4.Qd3 Ke1 Must protect the pawn. But this allows 5.Qe3+ This is the critical position that White has been striving for. Black is now absolutely forced to play 5...Kd1 Otherwise, White will take the pawn. But since Black's king is blocking the pawn, White now has time for 6.Kb7! So it took 6 moves for White to move his king one square. But that's OK, I was able to bring this game to a successful conclusion (mate) in 28 moves. There's probably there's a shorter line that I missed. But now that I've shown you the general technique, you all should be able to finish up.
Solutions Update: 1. White Mates in 1 19. Ne7# I kind of feel sorry for Dufresne. Not only was he on the losing end of a very famous game Aldof Anderssen played against him (which is known by chess historians as the "Evergreen" game, which you can look at here), but the majority of his games recorded in the chessgames.com database are losses. And most are to Anderssen. It looks like Dufresne had to fetch a lot of juice boxes for Anderssen.
Notice that 1.Qe7 would be checkmate were not for the Black queen on d8. So all White needs to do is to stop that queen from protecting e7. Even if he has to sacrifice every piece he has, it would be worth it, because his victory would be assured. So, how can White do this? 1.Rc8! Of course, Black recapturing with his queen will lead to his immediate demise: 1...Qxc8 2.Qe7#. He can't recapture with his bishop, either: 1...Bxc8 2.Qxd8#. That only leaves him with: 1...Rxc8 And since White has another rook, he does it again: 2.Rxc8 Qxc8 (again, if 2...Bxc8 then 3. Qxd8#) And now the Queen no longer protects the the crucial e7 square. White can now finish with: 3.Qe7# Again, this technique of removing a defender either by capturing it or forcing it to move to another square is an extremely useful tactic and you should be looking for opportunities to use it in your games.
The key to this problem is seeing that White can make use of the long a1-h8 diagonal, and that Black's heavy pieces down there on the 2nd rank are dreadfully misplaced. White just needs to get his knight out of the way: 1.Nf5! gxf5 Black has nothing better. If 1...Nxf5, then 2.Qh8#. White's threat was 2.Qxg7# 2.Qf6 Kg8 (or 2...Nh5 3.Qxf7#)
So after 6.Kb7, Black responds with 6...Kc2 and then 8...Kb1 is forced 9.Qd3+ Kc1 And there it is! 10...Kd1 No other move is possible 11.Kc6 One step closer 11...Ke2 Let's do it again: 12.Qc2 Ke1 Just like before. And now the King is brought closer. 16.Kc5 Kc2 I may have made a mistake here. I think I should've been able to force Kd1 earlier. Like instead of 18.Qe3, I should've played 18.Qc4+. Would've shaved off 2-3 moves. 23.Kd4 Ke2 So there you are. Again, it may not have been the shortest solution, but hopefully you can see the technique I employed and maybe you'll get the opportunity to use it in your own games.
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.
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. | Recent Comments
[/i][/b][/s][/u]I used to have a different nic:
"[i]What’s So Great About Public Libraries?[/ ..."
meh: "I can't access the Sussman article at American Thi ..." [/i] [/s] [/u] [/b]An Observation sez China Joe not my president: "Good Morning Vietnam ..." Martini Farmer: "> Wouldn't be the first time. The Houthis launched ..." grammie winger - cheesehead: "WTF? Would a male prisoner who turns into a woman ..." LinusVanPelt : "I did not know Scott Pressler has Samson hair unti ..." SpeakingOf : "This Vem Miller guy released a one hour and fiftee ..." tankdemon : "20 Nice oil field if you can keep it! Posted by: ..." FenelonSpoke: "Posted by: Sorry Folks, My Last Nic Upset Everyone ..." neverenoughcaffeine: "And the media as is noted on a daily basis, you do ..." CrotchetyOldJarhead...Wearing Pants and Working: "Good morning! Gonna be glad when this election sil ..." Divide by Zero [/i]: " Supplying a minor with alcohol, Indigo Girl Conc ..." Recent Entries
The Morning Report — 10/14/24
Daily Tech News 14 October 2024 Sunday Overnight Open Thread (10/13/24) Minimal Content Edition Gun Thread: Pre- TXMoMe Edition! Third Trump Assassination Thwarted Food Thread: Hummus! Is There A Pun To Be Made With Humus? No. First-World Problems... Tampon Timmy Does Another Failed "Make Me Look Normal" Event Sunday Morning Book Thread - 10-13-2024 ["Perfessor" Squirrel] Daily Tech News 13 October 2024 Search
Polls! Polls! Polls!
Frequently Asked Questions
The (Almost) Complete Paul Anka Integrity Kick
Primary Document: The Audio
Paul Anka Haiku Contest Announcement Integrity SAT's: Entrance Exam for Paul Anka's Band AllahPundit's Paul Anka 45's Collection AnkaPundit: Paul Anka Takes Over the Site for a Weekend (Continues through to Monday's postings) George Bush Slices Don Rumsfeld Like an F*ckin' Hammer Top Top Tens
Democratic Forays into Erotica New Shows On Gore's DNC/MTV Network Nicknames for Potatoes, By People Who Really Hate Potatoes Star Wars Euphemisms for Self-Abuse Signs You're at an Iraqi "Wedding Party" Signs Your Clown Has Gone Bad Signs That You, Geroge Michael, Should Probably Just Give It Up Signs of Hip-Hop Influence on John Kerry NYT Headlines Spinning Bush's Jobs Boom Things People Are More Likely to Say Than "Did You Hear What Al Franken Said Yesterday?" Signs that Paul Krugman Has Lost His Frickin' Mind All-Time Best NBA Players, According to Senator Robert Byrd Other Bad Things About the Jews, According to the Koran Signs That David Letterman Just Doesn't Care Anymore Examples of Bob Kerrey's Insufferable Racial Jackassery Signs Andy Rooney Is Going Senile Other Judgments Dick Clarke Made About Condi Rice Based on Her Appearance Collective Names for Groups of People John Kerry's Other Vietnam Super-Pets Cool Things About the XM8 Assault Rifle Media-Approved Facts About the Democrat Spy Changes to Make Christianity More "Inclusive" Secret John Kerry Senatorial Accomplishments John Edwards Campaign Excuses John Kerry Pick-Up Lines Changes Liberal Senator George Michell Will Make at Disney Torments in Dog-Hell 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) |