Tactics Time

No new tournaments again so I will take another trip down memory lane. Actually, that is not exactly true as I played a Blitz tournament last weekend. The invitation only event, known as “Gelfand Cup” boasted an all master field. The 10 player round-robin event was won by GM Alex Lenderman with an 8.5/9 score. Second place was taken by GM Leonid Yudasin with 7.5/9, while I had a relatively distant 6/9, good enough for a tie for 3rd. I actually had a pretty good start at 4/5, beating Yudasin and IM Yury Lapshun, but a 2/4 score in the 2nd half wasn’t impressive. Nevertheless, blitz is blitz and blitz is fun….plus due to the generous funding I was able to snag a cash prize nonetheless.

 

Anyway, I wanted to share an excerpt from one of my older games.

 

Bonin1
Bonin-Ostrovskiy (2013)

 

The above position arose during the 8th round of the 2013 edition of the New York International. My opponent was the famous IM Jay Bonin. Without calculating any variations, the position above appears to be definitely better for Black. With a powerful Knight on e4, two bishops, and chances on the Kingside, Black is poised for a positive result. Furthermore, although White’s pieces are developed on decent squares, it seems difficult for him to come up with a plan. Nevertheless….

 

Position After 1. d5
Position After 1. d5

 

1. d5?!/!?

This move looks like the perfect move to make sense of White’s pieces. So why the assortment of exclams and question marks? When I first saw d5 played on the board, I had a moment of confusion as I thought I could simply reply with 1…c5(?!). Left unperturbed I would simply continue with Bd6 (and maybe b5). Should that happen, Black will achieve such a harmonious position that it would only occur in the most pleasant of chessplayers’ dreams. White is really struggling to create any coherent plan. Meanwhile, Black’s pieces are positioned perfectly and I can slowly prepare a strike on the Kingside. Besides obvious Qe5 ideas, I can also try some h4-g5-g4 plans. Most importantly, White is reduced to a concerned bystander. Unfortunately, 1..c5 doesn’t work! After 1. d5 c5 White has 2. d6! with ideas of Nd5 as well as Nxe4. The subsequent opening of the position will be to White’s advantage as his pieces are fully developed. For example, 2…Bxd6 3. Bxe4 fxe 4. Nxe4 (Diagram) and the difference between White’s piece activity (from the 1st diagram) is night and day.

Analysis After 4. Nxe4
Analysis After 4. Nxe4

 

So there it is. 1. d5 is a great positional move that aims to exploit White’s only advantage in the position (quantity of development). As any strong positional move, it is backed up by a cute tactical point. But wait! Well, at least that’s what I said to myself after spotting the pitfall that is named 1…c5. I should mention that for about the past 5 moves, I had continuously been looking to land a knockout blow on the Kingside. After all, all my pieces are taking aim at White’s king… and White’s king doesn’t even have any defenders around! So I thought and I thought; I think I may have had 30 minutes after 1. d5 but ended up only with 5 when I played my move. Fortunately, my suspicious investment ended up paying off. There is a tactical operation in this position! Actually, it takes the default engine in my ChessBase (the ancient Fritz 11) a whooping 21 seconds to give Black a favorable evaluation.

 

1…       Ng5

2. Qe2 Qd6!

Here we go. The main points are unfolding

3. f4 

Now it was my opponent’s turn to be confused. The threats have ended and Black has to deal with the hanging Knight and the repercussions of poor development after dxc6.

3…          Bb6!

Position After 3...Bb6!
Position After 3…Bb6!

 

This is the main point. White has been forced to compromise the e3-square and now faces a dilemma. However, Black’s success is not yet obvious. Jay makes me prove my variation with the principled:

4. fxg5?

Practically, this move makes sense as it is the principled way to make Black explain the neglect of the Ng5. Objectively, this move loses.

4. Kh1! was the only way to stay in the game. Actually this powerful move puts a damper on Black’s plans. After 4…Rxe3 5. Qf1 (keeping f4 under control) Nh7, Black has an extra pawn, two bishops in an open position, and White’s king is exposed. However, Black is unlikely to be able to make use of any of these advantages if I am not able to develop properly and negate the activity of White’s pieces along the open files. The computer remains optimistic about Black’s chances, but the next 5 moves may look difficult for Black to make. Saying that, upon unraveling Black can look forward to a great game.

4…     Rxe3

5. Qf2

The Queen shields the King from any nasty discovered check(mate)s. It looks like White is pretty safe right now. The immediate 5…Re1+ gives up too much material. 6. Rxe1 Bxf2+ 7. Kf2 and the Rook+2N more than compensate for the Queen deficit. Fortunately, I do not have to cash in on my pin just yet.

5…    cxd5!

Position After 5...cxd5!
Position After 5…cxd5!

 

I was proud of this move, especially due to the idea it’s connected to and the fact that I saw it well in advance. Nevertheless even my brain-dead Fritz11 offers the alternative win 5…Qb4. But it does admit that 5…cd is stronger! Now since the Bb6 is defended, I am threatening Rxd3.

6. Na4

The final line of defense. White threatens Nxb6, but also Nc5 to plug the a7-g1 diagonal. Again, this resource had to be spotted and refuted in advance.

6…    Re1+

This wasn’t good before, but now things have changed!

7. Rxe1    Bxf2+

8. Kxf2    Qf4+

Loose pieces drop off.

9. Kg1 Qxa4

and soon it was 0-1

Position After 9... Qxa4
Position After 9… Qxa4

 

How far can you calculate?

Hello again! With the resumption of my college semester I have began a hiatus from tournament play, although I hope this hiatus will be short lived. Instead, the next few blog posts (or at least the plan is when I have no personal recent tournaments to cover) will be devoted to some interesting games I have played in the past.

Which brings us to the a paraphrased quote from the title:

 “How many moves ahead can you see?”

A funnily popular question, especially by casual enthusiasts to chess players. The question has produced equally entertaining answers, including the famous quip “Just one, but it’s always the best!” Nevertheless, this question is impossible to answer. There are endless parameters surrounding the task of calculation. I suppose a King+pawn vs. King endgame could be calculated 30 moves deep until Checkmate, but this doesn’t feel like an honest answer. I always thought that asking about calculation depth was comparable to someone asking a basketball player how many times he can do a crossover.

Nevertheless, I digress.

After all my rambling, I’m going to segue to an endgame that I played some years ago. I think this game showcases the furthest I’ve ever calculated, although once again the position is simplified and is surprisingly forcing. It’s not the most impressive bout, but at least the endgame has instructional value.

 

West-Ostrovskiy (2012)
West-Ostrovskiy (2012)

 

Here we have a double rook endgame that is visibly favorable for Black. White is reduced to passivity to due to the disparity between the activity of the Rooks. Aside from pressuring the f2 pawn, Black might also target the d4 or a2 pawn after Rf3 and a further rook swing. Nonetheless, despite the obvious advantages that Black possesses, it is not immediately clear how to break through. On top of this, Black needs to consider what White is going to do. How can White improve his position? First of all, White is prepared to defend all his weak pawns as the Rooks cover the 2nd rank pawns and can easily go to d2 and defend d4. Second of all, White is not looking to remain passive. With the plan of shooting the King over to e1, White will be ready to move his Rooks around to more noble goals, such as the B or A file. On the flip side, White has no other plan other bringing the King to e1, giving Black several moves to organize some kind of offensive. As mentioned, Black is doing a good job attacking the backwards f-pawn, but presently it is just not enough. Well, as the dictum goes, “You must create 2 weaknesses.” Armed with this age old advice, I played

33…     g5!

Position After 33...g5!
Position After 33…g5!

Pinpointing a surprise target in White’s camp: the h3 pawn! What could be Black’s plan? In the following moves, all is revealed. White will bring his King to e1 and Black will work on pressuring the h3-pawn. Although it may seem like a stretch, I had already calculated the finish of the game from this move onward.

34. Kc1 h5!

35. Kd1 h4

36. gxh4 gxh4

37. Ke1 Rf3

Position after 37...Rf3
Position After 37…Rf3

 

Both sides have achieved their plans. Black has succeeded in exposing the h3 pawn, and White has brought his King to e1 and is able to activate his rooks. Here, White obviously banks on the rooks’ newfound mobility as otherwise he will just lose a pawn.

 

38. Rb3 Rxb3

39. axb3 Rf3

40. Re3

 

White has avoided material losses and has taken off a lot of pressure from his position, but…

40…   Rxe3!

It turns out that the pawn endgame is problem!

41. fxe3

Position After 41. fxe3
Position After 41. fxe3

 

41…  Kb7

42. Kd2 Ka6

43. Kc3 Kb5

Position After 43...Kb5
Position After 43…Kb5

Now this pawn endgame is converted with the help of some good old fashioned flanking with a sprinkle of waiting moves.

44. Kc2 Kb4

45. Kb2 a6!

46. Kc2 Ka3

47. Kc3 a5!

48. Kc2 Ka2

49. Kc3 Kb1

50. b4 a4

and White resigned 0-1

Final Position
Final Position

 

Naturally, the game could have continued with: 51. b5 a3 52. b6 a2 53. b7 a1=Q+, and Black gets an easy win because of one tempo.

 

So there we have it, from 33…g5 to 51. Resigns, Black had the whole thing planned. Without shame, this could be extended to 53…a1=Q+ (although we will refrain to further adding moves 54. Kd2 Qb2+ and such…) so we have an example of a 20 move deep calculation. Can I now answer the title question with “20 moves without fail”…? Likely not, but nonetheless this endgame brings back pleasant memories even to this day.

 

Until next time!

First Post! USATE 2015

Welcome! As I am in the process of patching up my website, it seems appropriate to dispose of the tumbleweeds on my blog page. Luckily, my recent participation in the US Amateur Team East (USATE) event provides an easy opportunity to make my first post.

USATE is a historically large and fun event. There are no money prizes, so players’ motivation to make the trek to New Jersey is sure to be fueled by a desire to compete with their friends on a team and reunite with other chess acquaintances (unless one has a major urge to win a chess clock and a plaque). As usual, rating and bragging rights are on the line.
The “being on a team with your friends” aspect of the event was an integral component to my participation. Only a couple of weeks before Parsippany (town where USATE has been held in recent years) had the formidable squad “University of Hooztri Chess Team B” (not a real school!) been assembled, consisting of:
  • Yours Truly (2465)
  • Levy Rozman (2350)
  • Alexis Paredes (2150)
  • Katrina Wong (1486)
…for an average rating of 2111.
Seeded 42nd in the event, our first round pairing was against against a modest 1800 rated team. However, this was not a team of four 1800s, but actually the Fishbein family, led by Grandmaster Alex Fishbein (2583)! I had once read in GM Joel Benjamin’s book American Grandmaster that manning the prestigious first board has its ups and downs: expressed in an anecdote where the US team faces off against Columbia, Benjamin is left battling Grandmaster Alonso Zapata while the other boards “take out 3 extras from Scarface.” Jokes aside, I was quite happy to start off my event against a strong opponent; it would have certainly been less productive to play someone 600 points lower rated than me. Nevertheless, boards 2-4 finished quickly with a 3-0 score whilst I was left to struggle alone.
 
Round 1, Team Hooztri vs. Team Fishbein
The game began in a sedate manner, but quickly became very pleasant for me as we reached the following position:
                           Fish1
Fishbein-Ostrovskiy
A critical position in the game for me, and one where I spent an obscene 32 minutes or so. Obviously Black is for choice: White is saddled with problem pawns on a3 and d3, while I have an outpost on b3 and a potentially handy initiative on the queenside once I develop my pieces. The question is how to best develop here. A sensible continuation may begin with the tempting 15…Nb3 16. Rb1. Now reaching for the two bishops with 16…Nxc1 17. Qxc1 is theoretically appealing, but White’s pressure on the queenside makes it tricky for me to unravel. The computer offers the alternative 16…Qa5, hinging on the tactical variation 17. Nxa4 Nxc1 18. Nb6 Na2! 19. Nxa8 Qxa8, and my wayward steed is hard to capture because of a timely Be6 or even Qxa3. This tricky variation escaped me, and in my attempts to come up with a “convincing” and forcing conversion of my pluses I played:
15…Bf8
 
….which is almost a good move. The point is a lame response such as 15. Bf1 will allow me to develop with tempi e.g 15…Nb3 16. Rb1 Bg4 17. Bg2 Qa5 and with Black’s development running smooth (Rfd8, Rac8 is coming) White has every right to be very sad.
However it didn’t take Fishbein long to play
16. Bg5!
Fish2
Position After 16. Bg5!
The sickling on d3 is a small price to pay in order to avoid the nasty bind seen after 16. Bf1? Now I can’t say I missed Bg5, but I also can’t say I expected it, which is rather silly as it is White’s only move.
16…Qxd3
Greed is good
17. Qxd3
I didn’t think 17.Bxf6 was an option, but it is a serious move. Now after 18…Qxc3 the position becomes complex on account of 19. Bxe5 [19. Re3 immediately is imprecise due to 19…Qa5 20. Bxe5 Nb3 21. Bc3 Qh5 22. Ra2 Be6, and after the forcing continuation Black is ready to bring out his rooks while White will struggle due to worse piece placement and the weak a3 pawn], but a cunning antidote could be found in 18…Qxd1! 19. Raxd1 gxf6 20. Nd5 Re6! 21. Nc7 Rb8 22. Nxe6 Bxe6, when 2 bishops, control of the dark squares and queenside play easily outweigh the small material deficit. A similar exchange sacrifice could be found in the notes to the game’s 18th move.
17…Nxd3 
18. Re3!?
18. Red1 was what I was expecting, when my 32 minute think produced the variation  18…Nb2 19.Rdb1 Nc4 20. Bxf6 gf 21. Nd5 Re6 22. Nc7 Rb8! when after 23. Nxe6 Bxe6, the a3 pawn falls and an extra exchange offers White small consolation after the a+b pawns come rushing down the board. A cute idea we’ve seen in the notes above, but White’s play could be improved. After 21…Re6 White can prefer 22. Bh3!, aiming to win the exchange in a more advantageous version.  This position is OK as White is bringing an extra piece into the battle. Instead Black can prefer an earlier deviation with 21…Rd8! 22. Nxf6 Kg7 23. Nd5, when material is equal but the positional advantages are not. The computer offers to get sneaky with 23…Ra5!?, shooting for f5 ideas.
Not the end of the story! The variations indicate White himself should deviate earlier with 19. Rdc1, and now 19…Ra5! plans Be6 as e5 is defended while simultaneously developing (the rook can continue to c5) and escaping from future Knight forks in case of a subsequent Nd5.
Fish3
Position After 18. Re3!?
18…Nxf2!? 
As planned during my long think on move 15, this tactic looked simply irresistible. 18…Nc5 was calm and acceptable after 19. Bxf6 gf 20. Nd5 Rd8!, when the pawns may be about to become equal but the 2 bishops and queenside play promise Black an advantage. But Nf2 was very seductive….
19. Kxf2
19. Bxf6 Ng4! was a cute detail
19…Ng4+ 
20. Ke1 f6
21. h3  Nxe3
22. Bxe3 Be6
The dust has settled and the result is a material imbalance of R+2 vs N+N
Fish4

Position After 22…Be6

This position arose more or less by force after 18…Nxf2. Of course it depends on the position, but usually R+2 is a decent investment for 2 pieces, especially if it is not 2 bishops. Here I am very comfortable. There are no weaknesses in my position as my pawns and bishops cover all the important squares. The 2v1 pawn majority on the queenside is very important, especially if one notices the passive presence of the a1 rook. My plan of action includes making headway on the queenside, but this can not be achieved without the proper development of my rooks. Another bonus about this position is that it is one where I am safely playing for 2 results, although I guess this evaluation did not take my propensity to make confounding moves into account.

23. Bf1 Rec8 

24. Nb5 Bd7

24… Rc2! with the idea of Rac8 and perhaps Rb2-Rb3 was logical and consistent with my statements above. So logical that I can’t recall what spoooked me from playing this way.

25. Bd2 Ra6

A smart idea, intending Rb6. I was feeling pretty good…

26. Rb1!

…but it turns out it is not so easy to make progress! Now Rb6 could be met with Ba5…so I went into a think, draining my precious minutes from 8 to 3.

Fish5

Position After 26. Rb1!

26…Raa8

27. Ra1 Ra6

28. Ra1 Raa8

Begrudgingly going for a repetition. Although I could not think of an obvious way to make progress, I felt that if I was able to buckle down to study the position, then I could come up with an appropriate regrouping. Unfortunately I did not have such a luxury, so I prepared to call a ceasefire…

29. Bd3?!?!?!

What is this?! Even now looking at my scorebook I am reluctant to believe this move actually happened at the board. It is not that White avoids the repetition (my mulling had left me with 1 minute vs 9 minutes with 11 moves to go until I would receive my extra hour; although White can not objectively dream to win this), but this move simply leaves the h3 pawn en prise!! What did I do next move?

29…Bxb5?

Now what is this?! Through adrenaline or such, I blitzed out this nonsense, simply ignoring my opponent’s gift. Unfortunately, 29…Bxb5 really set the tone for my play the next 10 moves or so. Actually it is quite embarrassing to showcase the aforementioned continuation of the game, so it will be done with sparing annotations and with a look of shame.

30. Bxb5 Bxa3

31. Ra1 Be7?!

31….Bb2 32. Ra4 Ra4 33. Ba4 Bc3 is obvious as White will have better coordination with 3 minors as opposed to 2.

32. Rxa4 Rxa4

33. Bxa4 Kf8

At least no 33….Rc4 was played this game!

34. Bb3 Bc5

35. g4 b6?!

36. g5 Ra8

37. gxf6 Ra3?

Oh man….

38. fxg7+ Kg7

39. Bd1 b5

40. Bc1 Ra2

41. Nxe5

Fish6

Position After 41. Nxe5

The time control has been reached, and my position is a far cry from what it once was long ago. Now, with an hour on the clock, it was time to settle down, relax, and make a draw.

41…Bd4?

41…Bb4+! was key, intending 42. Kf1 Bd2! 43. Bxd2 Rxd2 44. Bb3 b4. As mentioned before, White will better coordinate 3 pieces rather than 2. Here White will have a tough time making progress as the rook is active and the b-pawn creates a distraction. It’s also helpful that the h-pawn is not compatible with the bishop, so an exchange of the rook for the N+epawn would be an instant draw.

42. Nd3 Bc3+

43. Kf1 Rh2

44. Bf4?!

44. Bf3! Kept the h-pawn on the board since 44…Rxh3? 45. Kg2 signals the end of the rook’s days.

44…Rh1+?

I would pay good money for an explanation of this random tempo-loss.

45. Ke2 Rxh3

Fish7 Position After 45…Rxh3

46. e5

The material is limited, but this does not stop the endgame from being very unpleasant to defend. I wouldn’t be surprised if the objective evaluation was a win for white. White aims to continue with Bb3, and then perhaps Be6-Bd7. Nothing is stopping White from prodding with his annoying bishops and pushing his e-pawn; it’s tough to formulate a cohesive plan of defense except “reactionary” moves against White’s threats.

46…Bd4

47. Bb3 Rh1?!

This move generates the computer’s disapproval, but even so it is difficult to come up with something. Be6 is coming, followed by Kf3-Ke4 and a timely lunge with the e pawn. Down the road I’ll have to give up my bishop for the pawn, resulting in a unique, but hopeless material imbalance (not even an imbalance, I’m just down material).

48. e6 Bf6

49. Be5

Fish9Position After 49. Be5

49…Rh5

Prolonging the game. 49….Bxe5 50. e7! is GG, but now 50. e7? Rxe5! is an oops for White.

50. Bd6 Rh4

51. Ke3?

Fish10Position After 51. Ke3?

51. Nc5! would have been putting the last of the nails in the coffin as e7 is coming. Instead at the 5th hour of play my opponent makes a very costly mistake. Obviously fatigue is a factor here, but I should also mention that after 49. Be5 both opponents regarded the best move for Black as resignation. Instead, 49…Rh5 placed the game on a lifeline. Now although White still maintained a winning position, it was still a surprise that the game had not ended immediately. After the game my opponent said he had also missed 50…Rh4. Again this move does not objectively change the evaluation of the position, but psychologically it is unpleasant to discover the last line of resistance. In my opinion, these factors led to the mistake of 51. Ke3. Of course, this may not have been the case at all, but speaking from experience I have been in similar situations from the “aggressors” position.

51…Bg5+

52. Kf3 Rh3+

53. Ke4 Re3+

54. Kd4

Now it is already an achievement for me to find a more purposeful role for my rook on the e-file, and for example a natural move such as 54…Re2 could give me some chances of defending. However, there is an even better move to be found

54…Kf6!

Fish11

Position After 54…Kf6!

Now all of my pieces are successfully coordinated in the fight against the e-pawn! Already Rxe6 is threatened, and amazingly White can not escape the elimination of his main trump.

55. Ne5

Setting up the last trap. 55. e7 Rxe7 is easy. 55. Be5 Kf5 threatens Rxd3+. 55. Nc5 Rxb3 is no problem either.

55…Kf5!

Not 55…Rxb3?? 56. e7

56. Nf7 

56. Ba2 Re2 57. Bb3 Re3 = or 56. Bd5 Re1, threatening Bf6.

56…Rxe6

57. Bxe6+ Kxe6

58. Nxg5 Kxd6

1/2-1/2

Fish12Final Position. Game Drawn

Whew! A long and interesting game despite a streak of truly poor moves by me. Nevertheless, in the end I could only be happy about escaping with half a point. Actually this game was really long, commencing at 1:00 and finishing at 7:20, leaving only a 10 minute window before the 2nd round game!

Our 2nd round pairing already had us playing “up”, facing a team with an average rating of 2150.

Round 2 Underway. Missing: Team Captain

My assignment was against FM Arthur Shen (2453). Arriving late after wolfing down some much needed lunch, I proceeded to build up a straightforward attacking position. Unfortunately a hasty decision spoiled my advantage, and after a series of exchanges the players agreed on a draw. Actually after the game we were both surprised to learn that we had missed a tactic which would have given Arthur a winning position. At least this game wasn’t 6 hours. However, this could not have been said about the rest of the team, as Levy was left battling on board two after we trailed in the match 2-1. Trying to squeeze blood from a stone, Levy kept us up until 2:30 A.M eating Dominos. Unfortunately his efforts fell short and ended up losing the match by the slimmest of margins, 2.5-1.5.

The next 3 rounds proceeded without much trouble, and Hooztri mowed down the opposing teams with scores of 4-0, 3-1, and 4-0. The final round however, had us paired against a tough team. For the 2nd time in the tournament we found ourselves playing “up”, this time against a team with an average rating of 2190. Despite the rating disadvantage, Hooztri quickly jumped out to a 2.5-0.5 lead, fueled by a quick win on board 2 and major upset on board 4 as Katrina defeated a 2000. I was the last to finish my game against the strong FM Josh Colas (2430), winning a nice game to give us a 3.5-.5 win.

The final tally gave us a 5-1 record with 19.5/24 match points. The breakdown was as follows:

Bd1: 5 Bd2: 5.5 Bd3: 4.5 Bd4: 4.5

Katrina’s result was particularly impressive as she raised her rating to a peak of 1686. If you are wondering about this aspect of our team’s composition, Katrina is a student of Alexis (our board 3) and attends the famous I.S 318 middle school, where I work weekly. A special thank you should go out to Katrina’s dad, Eric, for fun times and his support during the event, both big and small.

In the end, another year of USATE is in the books. I believe this is already my 6th time playing in this event, if not more. As always, Parsippany leaves a pleasant aftertaste both on and off the chess board. You can be sure to watch out for the University of Hooztri next year!