Friday, September 23, 2022

An Instructional Tactical Game

     In his writings that exceptional teacher C.J.S. Purdy reminded readers to always comb the board for tactics after your opponent moves. And, before making your own move you should visualize the new position for tactics. 
     If you don’t ask yourself if your opponent has any threats, you will constantly be making blunders. Likewise, if you don't look for tactical threat before you move, you will constantly miss them. There’s no point in strategic planning when there’s a winning combination in the position. 
     As Teichmann once put it, chess is 99 per cent tactics, but after playing on some servers I have come to the conclusion that a lot of amateur players have no idea what tactics are. They seem to think that just willy-nilly sacrificing a piece or making a bad move for the sake of a vague "threat" is playing tactically. 
     They play like the guy I played several games against online the other day. He insisted on plying 1.e5 and 2.Qh5; sure Nakamura has played it in Blitz, but he's a Super-GM. My opponent also liked to play Bf4 and Bxf7+ or Nf3, Ng5 and Nxf7.
     We had a little conversation between moves and when I asked him about it, his comment was that he wins a lot of games by playing tactically. He wasn't playing tactically, he was blundering. 
     Another opponent who was badgering me and using a lot of profanity stated he was an "opening innovator." When I replied that there is a difference between an opening innovation and a bad move, it elicited a string of cuss words. I took great pleasure in gloating over beating him a couple of times. 
     The point is that there is a difference between playing tactically and giving away a piece for nothing. Purdy always emphasized sound tactics. I am discounting Tal-like, risky, unclear sacrifices because most of us are not as good as he was and can't calculate like he did. 
     The way you find tactics is not looking at the position and trying various moves until you find something that works. If you see one or more of these things, there is a possibility that a tactical solution exists: 
 
1. Look at all checks. 
2. Look for undefended pieces. 
3. Look for pins and forks. 
4. Look for pieces (especially the King!) that do not have any escape squares. 
5. Look for masked pieces (i.e. pieces on the same line) 
6. Look for pieces that may be performing more than one defensive task 
7. Finally, briefly look at bizarre and surprising moves, sacrifices, Pawn breaks and “obviously unplayable” moves. 
 
     More often than not, there won't be a sound tactic available, but only after you have ascertained that there isn't should you proceed with your strategical plan, assuming you have one...a lot of amateurs don't. 
     Back in my day positional play was emphasized and tactics were a neglected area. Today it's the other way around, or at least it seems that way. During a game, especially in complicated, unclear positions, you have to be extremely attentive otherwise unpleasant surprises will await you. 
     No matter how good a strategical plan might be, a tactical mistake will completely ruin it. That's a problem with chess...it may take 40 moves to win, but only one bad one to lose. 
     The following short, but highly instructive game, played by two Moscow masters demonstrates some general ideas typical of the middlegame and a clash of two strategical plans. 
     White, relying on his lead in development, concentrated his pieces in the center and prepared an attack on the black King that was not castled. Black sacrificed a Pawn hoping for a counterattack on the Q-side where white was castled. 
     The game was decided by a Queen sacrifice when in final mating attack saw all the white pieces taking part. Yuri Averbakh described the action: 
 
1. The R on d1 took away the black K's squares on the d-file and defended the N at d8. 
2. The N, in tum, deprived the K of f7 square, the B deprived the K of f6
3. The R on e1 landed the fatal blow. 
 
While all that was happening, for black's part...
 
1. His B on f8 and P on f6 not only failed to help, they actually hinder the K's escape. 
2. The rest of black's pieces were cheerless spectators in the execution of their own monarch. 
 
     The winner, Mikhail Bronch-Osmolovsky (1919-1975) was awarded the Soviet National Master title in 1951. He is known for his contributions to opening theory and as a Soviet arbiter and President of the central chess section of the Burivyestnik Club. Nothing is known of his opponent, Boris Baranov (1923-1976).

 

A game that I liked (Komodo 14)
[Event "USSR Champ Qualifier, Moscow"] [Site ""] [Date "1953.??.??"] [Round "?"] [White "Mikhail Bronch-Osmolovsky"] [Black "Boris Baranov"] [Result "1-0"] [Annotator "Stockfish 15"] [PlyCount "41"] [EventDate "1953.??.??"] [Source ""] {Petroff Defense} 1. e4 e5 2. Nf3 Nf6 3. d4 {If 3.Nxe5 black should first play 3...d6 and only then play ...Nxe4. The point is that on the immediate 3...Nxe4 white has the strong reply 4.Qe2} (3. Nxe5 d6 (3... Nxe4 4. Qe2 Qe7 5. Qxe4 d6 6. d4 dxe5 7. dxe5 {White has won a P.}) 4. Nf3 Nxe4 5. d4 d5 6. Bd3 {etc.}) 3... exd4 4. e5 (4. Bc4 {This inviting move which should lead to approximate equality has not worked out well for white in practice.} Nc6 5. O-O Nxe4 6. Re1 {Oddly, there is no way for white to take advantage of the pin.} d5 7. Bxd5 Qxd5 8. Nc3 Qa5 9. Nxe4 Be6 10. Neg5 O-O-O 11. Nxe6 fxe6 12. Rxe6 {with an equal position.}) 4... Ne4 5. Qxd4 d5 6. exd6 Nxd6 7. Bd3 (7. Bg5 {can be met by} Nc6 {Also quite playable is 7...f6} 8. Qe3+ Be7 9. Nc3 h6 10. Bxe7 Qxe7 11. Qxe7+ Nxe7 {equals}) 7... Qe7+ {Averbakh claimed that 7...Nc6 is more accurate here. With the move in the game black plans to answer 8.Be3 with 8...Nf5 exchanging a N for a B, but this operation leads to a loss of time and to black delaying the develop- ment of his pieces.} (7... Nc6 8. Qf4 g6 9. Nc3 Bg7 10. O-O O-O {with complete equality.}) 8. Be3 Nf5 {But, this is questionable. It was not yet too late for black to reject his initial plan. By playing 8... Bf5 he would have gained an acceptable position, but after the text he encounters significant problems.} (8... Nc6 9. Qf4 g6 10. Nc3 Be6 11. Nd4 Bd7 12. Nxc6 bxc6 13. Qa4 Bg7 14. O-O O-O {White is better. Korchnoi, V-Averbakh,Y Sverdlovsk 1957}) (8... Bf5 9. Nc3 Nc6 10. Qf4 Bxd3 11. cxd3 O-O-O {with equal chances.}) 9. Bxf5 Bxf5 10. Nc3 {Offering black a P, but taking it would be extremely dangerous:} (10. Qf4 {Doesn't accomplish anything.} Qd7 11. Qe5+ Be6 12. Nc3 $11) 10... Qb4 {[%mdl 8192] This loses! By playing his Q to the Q-side where to all appearances white's K is intending to take shelter, black leaves his own K in the center a tad too long and white, having the initiative, is able to launch a decisive attack.} (10... Bxc2 {is just too dangerous.} 11. Rc1 Nc6 (11... Bg6 12. Nd5 {is fatal for black.}) 12. Qf4 Nb4 {With the obvious threat of ...Nd3+} 13. O-O Nd3 14. Qf5 Nxc1 15. Qxc2 {and white is better.}) ( 10... Nc6 {this is the correct move. After} 11. Qf4 Qd7 (11... Bg6 12. Nd5 { and wins.} Qd6 13. Nxc7+) 12. Nb5 O-O-O {white's advantage is minimal.}) 11. Qe5+ {Of course, there is no point in white exchanging Qs because his lead in development is best exploited by attacking.} Be6 12. O-O-O (12. Qxc7 {White fails to be tempted with this P grab.} Bd6 13. a3 Qxb2 14. Nd1 Bxc7 (14... Qxa1 15. Qxb7 O-O 16. Qxa8 Rd8 {Black is better.}) 15. Nxb2 Nc6 {with the advantage to black.}) 12... Nc6 {In the hope of mounting an attack along the c-file, black tries to buy off his opponent with a Pawn.} 13. Qxc7 Rc8 14. Qf4 Qa5 ( 14... Be7 {hoping to castle is met by} 15. Nd5 Qa5 16. Nxe7 Nxe7 17. a3 O-O { Black has no compensation for the P minus.}) 15. Qg5 {Interestying strategy. By offering the exchange of Qs now that he is a P up, white switches his Q to an active position with gain of tempo.} Qa6 (15... Qxg5 16. Nxg5 Be7 (16... Bf5 17. Rhe1 f6 (17... Be7 18. Bc5 {wins}) 18. Bc5+ Ne5 19. Bxf8 Kxf8 20. Nge4 { with a won ending.}) 17. Nxe6 fxe6 18. Nb5 {with an ending that clearly favors white.}) 16. Rhe1 {White's pieces are fully mobilized and are ready for decisive action whereas black has not yet resolved the question of safeguarding his K. Realizing his situation is desperate, black tries to counterattack.} Nb4 17. Nd4 {[%mdl 32]} Rxc3 {Self-immolation...this allows a mate in 6.} (17... f6 18. Qh5+ g6 19. Qb5+ Qxb5 20. Ndxb5 Kf7 (20... Nxa2+ 21. Nxa2 Bxa2 22. Bh6+ Kf7 23. Rd7+ Kg8 24. Bxf8 Rxf8 25. b3 {wins}) 21. Bxa7 Bf5 22. Nd4 Bd7 23. a3 Nc6 24. Ndb5 {Here, too, white has a won ending.}) 18. Qd8+ {[%mdl 512] White mates. This is the only satisfactory answer to black's last move!} (18. bxc3 {would have been a most unfortunate move.} Nxa2+ 19. Kd2 (19. Kb1 Nxc3+ 20. Kc1 Ba3+ 21. Kd2 Ne4#) 19... Nxc3 20. Kxc3 {Forced.} Qc4+ 21. Kd2 (21. Kb2 Ba3+ 22. Kxa3 Qa2+ 23. Kb4 {Black has to take the draw with 23...Qc4+ because after} O-O 24. Kc3 {white would be winning.}) 21... Bb4+ 22. Kc1 Ba3+ { draws}) 18... Kxd8 19. Nxe6+ {Again, this is the only move that wins.} (19. bxc3 Nxa2+ 20. Kd2 {and it'd black who is winning.}) 19... Ke7 20. Bg5+ { To repeat myself, this is the only move that wins. It is important not to let the K escape to f6.} (20. Bc5+ Kf6 {and there is no decisive followup whatsoever!} 21. Bd4+ Kg6 22. Nxf8+ Rxf8 23. Bxc3 Nxa2+ {and wins.}) 20... f6 21. Nd8+ {White mates in two...very precise play by Bonch-Osmolovsky.} 1-0

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