Sunday, November 4, 2012

Recurse

Two weeks ago, I went to watch some games in the fourth round of the Western States Open. I watched the games unfold on the top boards. The openings seemed vaguely familiar, but they also looked strange. Between the motion and the act had fallen a shadow that obscured the idea. I felt I was seeing, but not grasping.

I laid eyes on a tiny Asian girl in the Class A section. After checking the wall chart, I found out it was Joanna Liu, or should I say National U-8 Girls Champion Joanna Liu. Seeing her reminded me of The Joy Luck Club's story of Waverly Jong.

I transcribed the dialog near the end of the clip because the words seemed rather apropos to my relationship with chess of late.

WAVERLY: Guess what? I've decided to play chess again.

MOM: You think it's so easy. One day quit, next day play. Everything for you is this way. So smart, so easy, so fast. Not so easy any more.

[Back in chess tournament. Waverly is losing in front of an audience including her family.]

NARRATOR WAVERLY: What she said, it was like a curse. This power that I had, this belief in myself. I could actually feel it draining away. I could feel myself feeling so ordinary. All the secrets I once saw, I couldn't see them any more. All I could see was were my mistakes, my weaknesses. The best part of me just... disappeared. But I can't put it all on my mother. I did it to myself. I never played chess again.

One of Amy Tan's big breaks was a short story called Endgame. I was somewhat keen on trying to find a copy, but then I realized that it's likely that the best parts of Endgame were cannibalized for The Joy Luck Club.

I showed up at the club Thursday ostensibly to collect on a few debts, but also to see how the Holiday Swiss began. Round 1 produced the usual 500-point mismatches, but there were quite a few upset draws and one upset win. Again, I simply spectated. I didn't feel an urge to play, but after I left, I could almost envision myself among the players, returning to the world of silent cerebral intensity.

Throughout my life, computers and chess have exchanged positions as my favored hobby. The past three years, computers have dominated, drowning out Caissa's siren call. But the season is turning again. Recursion. Reversion. I feel my interest turning back to chess. Waverly's words haunt me: curse, powerlessness, blindness, mistakes and weaknesses. Confident and powerful or drained and ordinary? Perhaps it's time to test myself again.

Sunday, August 26, 2012

Spectator Sport



I was reminded today about this funny Geico commercial. My favorite moment had been that the player on move finishes capturing Nxg4 and then turns his dagger-like gaze on his opponent as if to say, "In your face!" I was curious about Andres Cantor's words, so I found this translation at Chess.com:

Ha sido una partida intensa hoy- (It’s been an intense match today)
Ya veremos qué está pensando- (Now we’ll see what he’s thinking)
Está pensando- (He’s thinking)
Veamos qué va a hacer- (Let’s see what he’s going to do)
¿Moverá a la reina o moverá al caballo?- (Will he move the queen or the knight?)
Qué tensión- (What stress)
Viene - (Here he comes)
Viene Viene Viene (Here he comes Here he comes Here he comes)
GOL! (Goal!)

Commentators at Chess.com observed that:
(1) the board was set up with the correct light square on the right. But...
(2) White has two light-squared bishops.

It's hard to tell where Black's Queen Rook is (if it's even present), but from examining the video, it seems to be hiding at a8 behind the Bb7. That allows the material to be even in the position which is likely a Najdorf or Scheveningen Sicilian opening. So the initial position seems to be:



Utilizing the guesswork of retrograde analysis that I learned from The Chess Mysteries of Sherlock Holmes, I can devise a plausible (but not realistic) path in which White's f-pawn captures Black's g-pawn and then underpromotes to a Bishop on g8 and then winds its way back to e2 via h7, g6, and h5, after which White plays pawn to g4.

The move ...Nxg4 is regarded as a mistake, but it's not entirely without merit. The idea is Bxg4 h5 (bishop moves) Bh6 pinning the White queen to the King. Unfortunately, White gets a lot of desperado moves such as Nxe6, Ndxb5, leading to a game that is close to equal.

Back to the initial position, the line b4 Nb1 Bxe4 seems preferable, winning a pawn in the center and gaining time. Fritz made up a funny line here: Rh3 d5 g5 Bd6!? gxf6 Qxf6 Re3 Bf4 (pin resurfaces!) with -/+ advantage to Black.



A retrograde problem and a tactical lesson inside a humorous commercial. Fake chess at its finest!

Thursday, January 12, 2012

Endgame Caveat #5: Space Invaders

Researching for this post, I came across this 80's music video at YouTube. Cross-links at YouTube eventually led me to this free online Space Invaders game.

The Lucena position is an intermediate endgame position involving a non-rook pawn on its 5th rank, with the defender's king cut off from the queening square, generally precluding a Philidor defense.

The first caveat is that just because your king is cut off doesn't mean that the Lucena is inexorable. If Black doesn't pay attention, White could try 1. Ke2 Rf7? 2. Rf1!. Exchanging rooks allows a drawn pawn ending. If the Black rook moves away from the f-file, the White King crosses to g1 and White can choose either the Philidor (camp the rook on a3 until the pawn reaches g3, then go to a8 and harass the Black King from behind) or even the First Rank defense against a rook pawn or a knight pawn (just shuffle the rook back and forth from a1 to f1).

Black to play wins starting with 1... Kh4 2. Rh1+ Kg3 3. Rg1+ Kh3 4. Rh1+ Kg2 driving the rook away. After Rh6

Now 5... g3 6. Rg6 Kh2 7. Rh6+ Kg1 8. Rg6 g2 9. Rg7 sets up Lucena

Standard Lucena continues with 9... Re8+ 10. Kd2 Re5 11. Rg8 Kf2 12. Rf8+ Kg3 13. Rg8+ Kf3 14. Rf8+ Kg4 15. Rg8+ Rg5

The Space Invader will land at g1, spelling doom for the White King. Notice that the White King on d2 is too far after 16. Rxg5+ Kxg5 17. Ke2. From the previous diagram, had Black proceeded with 9... Rf5 10. Rg8 Kh2 11. Rh8+ Kg3 12. Rg8+ Kh3 13. Rh8+ Kg4 14. Rg8+ Rg5? 15. Rxg5+ Kxg5 16. Kf2 would be a draw.

Whew! So that's the background. From the first diagram, what if we move Black's King and Pawn back one step?

1... Kh5 2. Rh1+ Kg4 3. Rg1+ Kh4 4. Rh1+ Kg3 5. Rg1+ Kh4. Black's attempt to land the Space Invader is repelled because he can't protect the pawn at g5 while driving the rook away as he did before. The crucial thing is that the White Rook maintains distance from the Black King and Pawn. If White plays Rg2 to stall at any point, then he may be lost again. e.g. 1... Rf7 2. Rg2? Kh5! 3 Rh2+ Kg4 4. Rg2+ Kh4 5. Rh2+ Kg3 and the rook has to run, giving Black time to get into the Lucena groove with g4. Even spotting Black another file won't always give him the win.

As long as White keeps his king in the red zone and his rook at g1, he should be able to draw using the Space Invaders defense. One subtlety is that with White to move or a Black finesse, 1...Re7 2. Kd2? is losing. 2... Re5! protects g5 and creates enough forward momentum to let the pawn squeak to g4. 3. Kd3 (second thoughts?) Kf5! 4. Kd4 (4. Rf1+ Kg4 5. Rg1+ (5. Kd4 Ra5) Kf3 6. Rf1+ Kg2) Re4+ 5. Kd3 and either 5... g4 or 5... Rf4 stay on track toward Lucena.

There is still some trickiness to deal with. After 5... g4 6. Rf1+ Rf4 7. Rg1 Kg5 8. Ke2 threatens the aforementioned drawing maneuver, but calmly advancing 8... Kh4 removes the danger of Rf1. e.g. 9. Rf1 Rxf1 10. Kxf1 Kh3. After the trickier 5... Rf4 6. Ke2 g4! is the lone winning move followed by 7. Rf1 g3! another lone winner. Game Over, Man!

A long time ago, I read Jeremy Silman's When a Philidor Position Goes Bad. But missing so many RPvR endgames at ChessTempo continues to reinforce that it's not all just Lucena and Philidor.

Sunday, January 8, 2012

The Karate Kid

When he made Daniel Russo wax his cars, paint his fence, paint his house, and sand his floors, Mr. Miyagi was secretly training him, not to be a slave, but to have strength and muscle memory to be able to block all kinds of attacks. This week, I overheard a martial arts instructor talk about the stages of training the other day. She highlighted these four:
  • Unconscious Incompetence - You have no idea what you're doing right or wrong.
  • Conscious Incompetence - You know what you're doing wrong but can't fix it.
  • Conscious Competence - You are able to do things right if you think about it.
  • Unconscious Competence - You do things right without thinking about it.

A lot chess training is pattern recognition and I agree it is important. If you know the beginning landmarks of all the checkmate patterns, then your analysis tree doesn't have to re-invent those checkmates every time you see them, especially when those set-ups show up at the end of your own analysis horizons. Wheels need not be reinvented every time. But when you get to the state of unconscious competence, it's hard to trust that stranger upstairs when you don't even know his name or party affiliation.

Perhaps this is a totally different part of chess competence, but when I analyzed a postmortem with future world champion Steven Zierk, I was dumbfounded at how quickly he could snap through variations to get to the truth about a line. I have difficulty buying into the oft-held forth de Groot assertion that around the expert-master level, the depth of analysis is not different, but the intuition and experience of evaluating different positions is where the difference lies. Arthur C. Clarke said "Any sufficiently advanced technology is indistinguishable from magic." Well, Zierk was so advanced, I thought I was watching wizardry. He seemed to be able to find a 10-ply refutation with ease. That kind of concrete ability I think is at least as valuable as a 9-ply calculating ability with a 1-ply correct intuition.

I listened to the entirety of Malcolm Gladwell's audiobook Blink. Here's an article about intuition pertaining to emergency room physicians that briefly mentions de Groot and some research gender-typing chickens. They used the term "sexing chickens", but I prefer gender-typing as a safer term. :)

Maybe I'm stubborn and mistrustful of the non-concrete. Or maybe de Groot's analysis doesn't even apply if I'm a Class A player masquerading as an Expert. Until I'm able to correctly verbalize or at least demonstrate deep-ply understanding of a complex tactic or position, I won't be focusing on my intuition to get me to the truth. I guess I'll be stuck at training stage 3 for a while trying for conscious depth and accuracy.

Thursday, January 5, 2012

A Song of Ice and Fire

I spent most of my leisure time during the holidays reading A Song of Ice and Fire by George R. R. Martin. This is more or less a review with a bunch of quotes at the bottom. It's probable that I'll give away some ***SPOILERS BELOW***, so there's your warning.

Where to begin? It's difficult to summarize a work of such grand scope. Let's start on the positive. George R. R. Martin is a great writer. If you took the story-telling gifts of William Shakespeare, Mark Twain, and J. R. R. Tolkein and rolled them all into one person, George R. R. Martin might be that person. He has a vivid style, flowery, but not excessively so. He has great instincts for pacing such that during climactic moments, the flowery words drop away and things happen in a rush. He has certain vocabulary mannerisms that seem very British ("arse") and some that seem a part of his invented fantasy universe ("Ser" instead of "Sir", "septs" instead of "churches", "sellswords" instead of "mercenaries"). There are also character mannerisms (every bearded character dribbles while drinking wine) and settings mannerisms (how many ways can you describe bone-numbing cold?) that mark his style. He also revisits about 10-15 themes such as "Winter is coming" (prudence) and "A Lannister always pays his debts" (monetary honor) that act as touchstones through the long tracts of pages.

The series is about a struggle to rule Westeros, a land of pre-gunpowder medieval chivalry, rival lordships, simmering feuds, legendary heroes, and ancient castles. Magic and mythical monsters seem extinct, although the very first chapter sets the tone for the return of an ancient inhuman evil. Martin's world includes a continent beyond the Narrow Sea that allows him to extend his tale beyond Western European culture into exotic Eastern cultures, such that if Scheherezade were an actual person, I would include her among Martin's inner muses. Most of the first book lays out the missteps and opening salvos of a war that engulfs a noble family of seven called the Starks. But the land is filled with carnivorous rivals: Lannisters, Targaryens, and Baratheons (oh my!). Against the backdrop of the rebirth of myth and magic, Martin weaves a Gordian knot of plots and murder mysteries among seven powerful families trying to grab the brass ring, or in this case an Iron Throne. Martin's characters run the gamut between stupid to genius, saintly to demonic, vivacious to listless and at least for the characters he concentrates on, they jump out from the page, warts and all. And just like in Shakespeare's tragedies, main characters die.

The deaths of main characters were jarring to me, especially since I hang on to childhood notions of "happily ever after". I hated the ending of Oscar-winning "Million Dollar Baby" and judging by the surplus DVD bin, so did much of America. But I was able to forgive Martin and keep turning the pages in hopes that enough of my favorite characters survive to justify my investment in their causes. But I now realize that perhaps Martin had little choice to create real danger and surprise. When I read the David Eddings' Belgariad (Pawn of Prophecy, Queen of Sorcery, Magician's Gambit, Castle of Wizardry, and Enchanter's End Game) or many of Asimov's works, I felt somewhat bored because their protagonists intelligently hatched plans, and executed them, perhaps improvising a little when things go wrong. Danger to main characters seems only a distant possibility. Martin actually gives his villains the elements of surprise, initiative, intelligence, and victory. Good guys haven't always won so far and perhaps I will grudgingly admit that the story experience has been richer for it.

This series is not for the faint of heart. George R. R. Martin originally started out in 1995 making a trilogy, but like the horizon, the final book keeps moving away, until now he estimates the final act to be book seven. He has only published the first five so far. The reading is voluminous. To finish book five, you have to read about 4,000 pages. Compare that to J. R. R. Tolkein's Lord of the Rings at 1,200 pages. There is a cast of thousands and I am not exaggerating too much here. The books have appendices that show family trees out to four or five generations of semi-significant characters plus perhaps thirty minor families. There are so many names that it is almost a necessity to consult A Wiki of Ice and Fire to keep from being hopelessly lost in the crowd. The content of both the book and the first season on HBO I would definitely rate at NC-17. Martin does not shrink from describing the horrors of war including amputations and maimings, gang rapes, infanticide, and torture. He is also not one to gloss over consensual sexual situations; sex sells. But there is at least one child rape that I can think of and some tangential references to an underage sex trade from which I have some trouble withholding Victorian judgment. It does add realism and cultural richness to Martin's world in a time of war that such ugliness is not covered up.

Martin also tackles weighty issues within his fiction framework using a realistic and sometimes satirical viewpoint. In this endeavor, he follows Mark Twain whose Huckleberry Finn focuses on slavery and whose A Connecticut Yankee in King Arthur's Court take on chivalry. Knights follow codes of honor for each other, but treat the common folk as less than dirt. Slaves are not just servile robots, but human beings trying to survive through obsequiousness and insidious rebellion and the little resources that they can muster. One writer took Martin's work as a commentary on statecraft, concluding that Martin seems to advocate use of soft power.

In summary, the 4,000 plus pages of "A Song of Ice and Fire" are well worth the slog. For chess players, there are references to the "Game of Thrones" in the first three books. In book five, a game similar to chess named cyvasse makes its appearance. The plots to win the throne include of course the defeat of other kings with the death of the losing king the standard consequence. There's nothing like a tale of regicide to get a chess player's blood flowing. The characters in the first book roughly map out to a group of chess pieces:

King:King Robert Baratheon
Queen:Queen Cirsei Lannister
Queen's Bishop:Lord Varys - "The Spider"
King's Bishop:Lord Petyr Baelish - "Littlefinger"
King's Knight:Ser Barristan Selmy - "Barristan The Bold"
Queen's Knight:Ser Jaime Lannister - "The Lion of Lannister"
Queen's Rook:Lord John Arryn
King's Rook:Lord Eddard Stark
Pawns:Robb Stark, Brandon Stark, Sansa Stark, Arya Stark, Jon Snow, Joffrey Baratheon, Tommen Baratheon, Theon Greyjoy
Here are some quotes from the book that are tangentially relevant to chess.

Volume 1: A Game of Thrones
Ser Jorah Mormont: The common people pray for rain, healthy children, and a summer that never ends. It is no matter to them if the high lords play their game of thrones, so long as they are left in peace. They never are.

Queen Cersei Lannister: When you play the game of thrones, you win or you die. There is no middle ground.

Lord Eddard Stark: Lord Baelish, what you suggest is treason.
Lord Petyr Baelish: Only if we lose.

Volume 3: A Feast for Crows
Lord Petyr Baelish: Always keep your foes confused. If they are never certain who you are or what you want, they cannot know what you are like to do next. Sometimes the best way to baffle them is to make moves that have no purpose, or even seem to work against you. Remember that, Sansa, when you come to play the game.
Sansa Stark: What... what game?
Lord Petyr Baelish: The only game. The game of thrones.

Lord Petyr Baelish: I am tempted to say this is no game we play, daughter, but of course it is. The game of thrones.
Sansa Stark (thinking): I never asked to play. The game was too dangerous. One slip and I am dead.

Lord Petyr Baelish: I might have to remove her from the game sooner than I'd planned. Provided she does not remove herself first. In the game of thrones, even the humblest pieces can have wills of their own. Sometimes they refuse to make the moves you've planned for them. Mark that well, Alayne, It's a lesson that Cersei Lannister still has yet to learn.

Volume 5: A Dance with Dragons
Haldon Halfmaester: The day you beat me at cyvasse will be the day turtles crawl out of my arse.

"Prince Aegon," said Tyrion, "since we're both stuck aboard this boat, perhaps you will honor me with a game of cyvasse to while away the hours?"
The prince gave him a wary look. "I am sick of cyvasse."
"Sick of losing to a dwarf, you mean?"
That pricked the lad's pride, just as Tyrion had known it would. "Go fetch the board and pieces. This time I mean to smash you."

They played on deck, sitting cross-legged behind the cabin. Young Griff arrayed his army for attack, with dragon, elephants, and heavy horse up front. A young man's formation, as bold as it is foolish. He risks all for the quick kill. He let the prince have first move. Haldon stood behind them, watching the play.

When the prince reached for his dragon, Tyrion cleared his throat. "I would not do that if I were you. It is a mistake to bring your dragon out too soon." He smiled innocently. "Your father knew the dangers of being over-bold."
[..]
Smiling, he seized his dragon, flew it across the board. "I hope Your Grace will pardon me. Your king is trapped. Death in four."
The prince stared at the playing board. "My dragon..."
"...is too far away to save you. You should have moved her to the center of the battle."
"But you said..."
"I lied. Trust no one. And keep your dragon close."
Young Griff jerked to his feet and kicked over the board. Cyvasse pieces flew in all directions, bouncing and rolling across the deck of the Shy Maid. "Pick those up," the boy commanded. He may well be a Targaryen after all.
"If it please Your Grace." Tyrion got down on his hands and knees and began to crawl about the deck, gathering up pieces.

The thin man shifted an onyx elephant.
Across the cyvasse table, the man behind the alabaster army pursed his lips in disapproval. He moved his heavy horse.
"A blunder," said Tyrion. He had as well play his part. "Just so," the thin man said. He answered with his own heavy horse. A flurry of quick moves followed, until finally the thin man smiled and said, "Death, my friend."

Tyrion Lannister: I play better with a full belly and a cup of wine to hand.

Wednesday, December 14, 2011

Quiescence

Someone once asked where I get the pictures posted here. I usually just use keywords on Google Images to find the picture of my heart's desire. I suppose I'm remiss in crediting the sources. Today's image comes from http://wallbase.cc/wallpaper/13271 where you can get a wallpaper-sized image. It's not a natural photograph, but it fulfilled two of my major criteria: a lone tree reflected in a placid lake. The thoughtful person and random birds were a bonus as was the general grayscale dreariness.

This blog has been frozen, reflecting a coldness I've had toward chess for an extended period. I keep thinking Caissa's absence might make my heart grow fonder, but prolonged estrangement seems to better follow "Out of sight, out of mind." Have I forgotten what it's like to have fun playing chess? The rush of solving a problem, the triumph of victory, the mystery of Zoroastrian symbolism. The siren's song is faint. Sometimes, I visit ChessTempo to test my mind against the middlegame and endgame puzzles, but sometimes it makes me fall asleep at my computer or prompts me to curse my failings. My blogroll seem similarly inactive these days, most surprisingly Castling Queenside, but I still click over to the three who seem at least somewhat active. Temposchlucker took a summer hiatus but seems back to the tantalizing world of trying to organize the cognitive hash that we amateurs call our chess thinking. I tried to add my two cents, but he shot me down with a dismissive "Nope!"

My attitudes towards chess are much too messy to summon the discipline of organizing my thoughts. I'm trying to get past the first few pages of Charles Hertan's Forcing Chess Moves who urges "use computer eyes." Perhaps it's too simplistic to blame mere geometry, but when I miss a problem, I tell myself that I just didn't look deep enough or wide enough. Full width-depth search is a labyrinth that only computers can hope to navigate by brute force. Perhaps we humans can only hope to cut through the thicket with concepts and patterns as our signposts. On ChessTempo's endings, I groan when I get a QP v Q problem. When I miss it, the winning move is tagged with "Win in 48 moves". As if that's humanly possible. I do see patterns in the RB v R endings now and I daresay I can get a decent percentage correct. But the RP v R endings are still quite confusing which is aggravating because it offends my delusion that knowing Lucena and Philidor are enough.

Sometimes, the move that was too lateral for my narrow mind is tantalizingly close.

I saw that Qd1+, if legal, would be checkmate, but I couldn't find Qg4 skewering the Re2. Why? Because I was too focused on not losing the queen or the rook.

And the two recent problems on Temposchlucker's blog:

Here, Tempo said I was in good company as GM Rowson couldn't see this through the thicket. But even being given Qd5+ Ke3 Qg2 c1Q Qg5+ Kmoves Qxc1, I couldn't see it all the way through. I saw Qd5+ Kc3 Qd4+ Kb3 Qa1 prevents both queening and the bishop pawn stalemate. The real problem came from Qd5+ Ke2. At no time did I even consider Qa2. Perhaps in retrospect, I could say "When there is a bishop pawn stalemate possibility, pin the pawn from the drawing corner" might be a helpful recitation to keep my sieve-like brain from dropping this lesson. "Depth and breadth," I say. "Insufficient signposts," someone else might say.

And here I missed almost everything because I had such an attachment to my evaluation that Black was in danger of one or other family check. Did I prune these variations before they even budded? Or did I have human bias? I saw that Qg5+ Kf1 Qg2+ Ke1 Qg1+ Kd2 Rd8+ Kc2 probably was going nowhere. I tried to consider Rd8 when I knew it was strong, but pruned it as soon as I thought of Nf7+ Kg8 Nxd8, forgetting that Qxf7 puts the losing ball back in White's court. So I opted for Qg5+ Kf1 Rd8 hoping that the full family check Nf7+ Kg8 would end with Nxg5 Rd1#, Qxg5 Rd1# or Nxd8 Qxc5. Never in my wildest dream did I consider Qf8+ Rxf8 Nf7+. Zwischenzug is German for "How the heck did I miss that?!"

My fear of losing material seems to be hindering many of my tactics. Vinny tells Josh, "See, he didn’t teach you how to win. He taught you how not to lose. That's nothin’ to be proud of. You’re playin’ not to lose, Josh. You’ve got to risk losing. You’ve got to risk everything. You’ve got to go to the edge of defeat! That’s where you want to be, boy. On the edge of defeat!" I'm pruning variations before they get good. Whether it's Hertan's computer eye blindness, or whatever I choose to call it, it's all discouraging. Chess isn't 100% discouraging; maybe only 75% so. One bright spot was this problem:

I was proud of myself for finding Re2+. But I didn't find it from the initial position. Only when it was one ply away did I see it. I wrap up with my own theme for the top picture: "Do not prune a variation until quiescence has been reached."

Wednesday, May 18, 2011

The Terminator

I have never been into slasher movies, but if you replace the hockey-mask-wearing psychopath with a cyborg assassin, and throw in some time paradoxes and impending Armageddon, then I'd be popping some popcorn. TV Tropes gives The Terminator as an example of the archetype called Implacable Man.



Since his announcement on Monday that he fathered a love child about 14 years ago, Arnold Schwarzenegger has been all over the news.

Coincidentally, I had been reviewing a problem I had missed at ChessTempo.com. It had the following initial position. Black to play and win.



I had missed the problem on February 5, 2010 by playing Bh1. How do I know such detail? I broke down and bought a one-year Gold Premium Membership for $35. The information geek inside me couldn't resist the siren call of database drill-down to try to figure out why this game eludes me. Temposchlucker's post on the drills he was doing made me realize that I have to get back to fundamentals of tactical vision and calculation.

If you haven't tried your hand at the above diagram, then
***SPOILER ALERT***

Before the diagram, White had just won a pawn by playing the sequence:
40.Bd3xNf5 exf5
41.Qxf5

Black has impressive batteries along the a8-h1 diagonal and the a8-a1 file. Is White safe? Apparently not. The solution to the diagram begins with

41...Ra1

Of course White can't capture because it brings the Black Queen to his back rank with deadly consequences. Perhaps he can wait for escape later, but for now he can try to hunker down with

42. Qf4

The key move brings the Terminator onto the scene. (See if you can guess why I call the queen the "Terminator")

42...Qa4!
43. Qd2

White runs for cover.



Now what? You might be tempted to put the queen in a mating battery with 43...Qe4, but after 44.f3 Rxc1+ 45.Qxc1 Qxf3 46.Qc8+ Kh7 47.Qc2+ g6 48.Qd2 Qh1+ 49.Kf2 Qxh2+ 50.Ke3 50.Qxg3+ Kd4, Black has a winning endgame, but more technique will be required.

A young Alexander Ivanov, playing in I think an under-26 championship in Riga in 1980, goes for the killer move.

43...Qd4!

Black keeps advancing to unsupported positions, purposely hanging the Black Queen as if it lacked any regard for personal safety. But the Black Queen is immune to capture (44.Qxd4 Rxc1+ 45.Qd1 Rxd1#) as is the Black Rook (44.Rxa1 Qxa1+ 45.Qe1 Qxe1#)

44.Qe1

White tries one more retreat before throwing in the towel. White now has both heavy pieces on the back rank with his own battery threatening to capture Rxa1. Black plays his ace in the hole and only now goes to the a8-h1 battery. Now that g2 can't be protected by playing f3, Ivanov played 44...Qe4!, forcing resignation as the best White can do to avert checkmate is 45.Qxe4 Rxc1+ 46.Kg2 Bxe4+ a rook-down endgame with no chances.

Back at the 43rd move, I wondered what if 43.Qe3? It still protects the rook right?



43...Qd1+!
44.Qe1



All four heavy pieces are on White's back rank attacking each other!

44...Qxe1+
45.Rxe1 Rxe1#

The unstoppable Queen reminded me of the unstoppable hanging Rook in the Steinitz-Von Bardeleben "Battle of Hastings" game.

That terminator is out there. It can't be bargained with. It can't be reasoned with. It doesn't feel pity, or remorse, or fear. And it absolutely will not stop, ever, until you are dead. — Kyle Reese


I'll be back. — T-800