Skype coaching session, 19 May 2019. The game discussed (29 moves) is given below with annotations and without annotations. Re-structuring of the sessions now offers the option for guests to bring their own games for group discussion. Recordings of some previous coaching sessions can be found at: http://www.open-aurec.com/Skype/PaulBenson/PaulBenson.htm Paul Benson. * * * Annotated Game. White: I. Hausner, 2370. Black: Z. Polgar, 2275. Event: Kecskemet 1983. Result: 0-1 in 29 moves. Opening: King's Indian Defence, Four Pawns Attack, E76. 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 O-O 6. Nf3 c5 7. d5 | Mainlining, permitting black to choose from a variety of contrasting systems. White can also seriously influence the style of middlegame here. (A). If, 7. Be2 cxd4 8. Nxd4, we are in a Sicilian Defence, Dragon Variation, Maroczy Bind formation. (B). Or if, 7. dxc5 Qa5, play will be more in the realm of the Pirc Defence. || 7. ... e6 | By far the most popular choice here, and probably the most challenging. Instead, 7. ... b5, transposing into Benko Gambit territory with white already having made a commitment on the kingside, may suit the style of those seeking dynamic play with black. Known but in need of strengthening are, 7. ... a6, 7. ... Bg4, 7. ... Na6. Lastly, if black flicks in, 7. ... e5, white can choose between, 8. dxe6, Mainlining, or try the lesser-explored, 8. fxe5 dxe5, with a passed d-pawn in the bank. || 8. dxe6 | More popular here is, 8. Be2 when, 8. ... exd5 9. cxd5, creates a different central pawn formation imbalance. Less popular is, 8. Bd3, and with a few supporters there is the somewhat forcing, 8. e5 dxe5 9. fxe5 Ng4 to be explored. || 8. ... fxe6 | Black prefers to have a flexible central pawn formation, those pawns on e6, and especially d6, might have the appearance of being targets, but experience suggests white cannot gang up on the backward d6 pawn. Instead, 8. ... Bxe6, when, 9. Bd3 Bg4, is the black idea. || 9. Bd3 | This aggressive posting of the light square bishop is the most popular move here, but the more solid, 9. Be2, seems to score better. What are the differences between these contrasting bishop moves? On d3, the bishop aims into the black kingside, easy to understand. On e2, the answer is more subtle, nothing to do with the piece itself, but more to do with keeping control of the d4 square, keep an eye on how black takes advantage of the d3 bishop blocking the action the white d1 queen. You pays your money and makes your choice, you want action, play, Bd3, you want to keep it under control, play, Be2. || 9. ... Nc6 | By far the most popular move, however the strange-looking, 9. ... Nh5, deserves more attention than limited database reports, plenty of scope for independent analysis, some homework here might well offer rewards. || 10. O-O Nd4 | Almost an explanation as to why the black d6 pawn is untargeteable. If the black d4 knight is permitted to remain in place, then attacks up the d-file automatically fail, while exchanging on d4 offers black the chance to fix the central pawns. Instead, 10. ... a6, seems to produce decisive games, while the hardly-explored, 10. ... e5, is worthy of much further investigation than limited database reports. || 11. Ng5 | We arrive at such a moment when the database offers a wide range of choices, none standing out as being of greater popularity than any other. This tells us that the initial skirmishing is over, both players must now spend time arranging their own plan while monitoring what the opponent is hatching up. This knight sortie is nibbling around at a few pawns, h7 and e6, black is not yet under serious danger, but such a piece cannot be left unchallenged for ever. Consequently, black might feel pressured into pushing it back with, pawn h6, and the white objective is achieved, a subtle weakening in the black kingside defences. Again after, pawn h6, black will not be falling apart immediately, but once the white pieces get into the black kingside, then who knows what will become available if the black h-pawn has been induced into advancing. Instead, 11. Kh1, postponing commitment seems to gain white little. There is however the committal, 11. Nxd4 cxd4 12. Nb5 e5, which despite fixing the centre, offers chances for fighting play to both sides. Finally, there is the useful waiting move of, 11. Bd2, which gives black a free hand, quite often a good way of testing the ambition of the opponent, will they find a similar non-committal development move, or think this is a sign they can start pushing for the initiative? || 11. ... e5 | A doubler. Firstly, the black d4 knight is offered further support. Secondly, by being the first to play, pawn e5, white is now denied the same move. Some dangerous white ideas which are now prevented can be noted in the line, 11. a6 12. e5 dxe5 13. fxe5 Ne8 14. Nxh7 Kxh7 15. Qh5+ Kg8 16. Bxg6, when the black king is in danger. Of course, black can find other moves rather than, 11. ... a6, but all must allow for the possibility of white lashing out with, Nxh7, once the strong black kingside defender, the f6 knight, is pushed around. Note that, 11. ... a6 12. e5 dxe5 13. fxe5 Nh5, does not help as, 14. g4, and the complications costs black a piece without particularly stifling the white attack. || 12. f5 | White must get a kingside initiative, this is the only move to be considered. || 12. ... h6 | Black plays forcefully. Instead there is a different black plan available. S. Sale (2396) - B. Damljanovic (2550), Rijeka (Croatia) 2010, went: 12. ... gxf5 13. exf5 h6 14. Nge4 Nxe4 15. Bxe4 Bxf5 16. Bxf5 Nxf5 17. Qd5+ Kh8 18. Qxb7 e4 19. Bf4 e3 20. Qe4 Qd7 21. Rae1 Rae8 22. Qd3 Bd4 23. Re2 Qg7 24. Nb5 a6 25. Nxd4 cxd4 26. Rf3 Rf6 27. h3 Qg6 28. Rf1 Ng3 0-1. Improvement for white clearly required, black cannot be allowed to take such central control for free. || 13. Nh3 | The complex, 13. fxg6 hxg5 14. Bxg5 Ne6 15. Bxf6 Rxf6 16. Qh5, offering a piece for 2 black pawns to invade the black kingside is difficult to assess over-the-board. If such a piece sacrifice is to become part of the repertoire, perhaps seek advice first from Fritz and friends. || 13. ... gxf5 | Double-edged - "Win Something, Lose Something." The Win: Black will have a 3 against 1 central pawn majority. The Loss: White will have a mobile 3 against 1 kingside pawn majority, thankfully for black mobilisation is going to take some time. Strangely, while each has a pawn majority whit which to play, it is going to be the pieces who are about to do all the tricky work. || 14. exf5 | Black to play and produce a dynamic thematic idea. || 14. ... b5 | The white centre, remember those 4 pawns across the board at only move 5, is slowly but surely being dismantled. In positions like this, when confronted with the age-old choice of, "Punch Or Duck", search for a healthy-looking, "Punch", and the chances are you will find an interesting idea, the only problem is to work out if it actually is healthy. Instead, a different approach from black tempted white into the following (possibly mistaken) attempt to calm matters. J. Montilla (2050) - J. Zawadzka (2377), Womens Olympiad Istanbul 2012, continued: 14. ... Qe8 15. Qe1 Qh5 16. Qg3 Kh8 17. Qg6 Qxg6 18. fxg6 Be6 19. Nf2 b5 20. b3 e4 21. Nfxe4 Nxe4 22. Nxe4 bxc4 23. bxc4 Ne2+ 24. Bxe2 Bxa1 25. Be3 Rxf1+ 26. Kxf1 Be5 27. Bxh6 Bf5 28. Bf3 Rb8 29. h4 Bxg6 30. Nd2 Bg3 31. Bg5 Bd3+ 32. Be2 Re8 0-1. A stern challenge to the yet-to-be-written rule: "It is never safe to capture an opposing a-file rook with your g-file fianchetto bishop, even when it is safe!" Perhaps if the fianchetto bishop survives to tell the tale, then it is safe? || 15. b3 | This is 1983 and white has had the chance to learn from a rather high-class punch-up from a year earlier. L. Christiansen (2505) - G. Kasparov (2675), Moscow Interzonal 1982, entertained us with: 15. Be3 bxc4 16. Bxc4+ Kh8 17. Bxd4 cxd4 18. Nd5 Ba6 19. Nxf6 Bxc4 20. Nh5 Bxf1 21. Qg4 Qd7 22. Rxf1 d3 23. Qf3 d2 24. g4 Rac8 25. Qd3 Qa4 26. Nf2 Qd4 27. Qxd4 exd4 28. Nf4 Rfe8 29. Ne6 Rc1 30. Nd1 Bf6 31. Kf2 Bg5 32. Ke2 Rc5 33. Kd3 Re5 34. Nxg5 hxg5 35. Rf2 Re4 36. h3 Re3+ 37. Kxd4 R8e4+ 38. Kd5 Re2 39. Rf3 Re1 40. f6 Rf4 0-1. Tripled pawns can be weak or strong, it all depends on how the pieces of both sides coordinate around them that determines their fate. Instead, 15. cxb5, just totally concedes the centre, black will have the luxurious, 15. ... d5, and the rest should be history in the making. Similarly, 15. Nxb5 Nxb5 16. cxb5 d5, and black is a very happy bunny. || 15. ... Bb7 | Black is not only pointing this b7 bishop into the white kingside, it also supports a central break of, pawn d5. || 16. Nf2 | This sidelined piece must get back into the game before any serious thoughts of entering into kingside activity can be entertained. Black to play decides that playing actively is the only way to continue. || 16. ... d5 | Aha, so this is the Four Pawns Attack mentioned in the game header, right? Instead differing central black pawn play offers us this example. S. Marjanovic - A. Kovacevic (2405), Yugoslav Championship Semi-Final Kladovo 1994, produced: 16. ... e4 17. Ncxe4 Nxe4 18. Bxe4 Bxe4 19. Nxe4 Nxf5 20. Rb1 Nd4 21. Bf4 d5 22. cxd5 Qxd5 23. Ng3 Rae8 24. Qg4 Qe6 25. Qxe6+ Rxe6 26. Kh1 Ne2 27. Bc7 Nxg3+ 28. Bxg3 Rxf1+ 29. Rxf1 Re2 30. Bd6 c4 31. bxc4 bxc4 32. h3 Rxa2 33. Rf5 Ra6 34. Bb4 Rc6 35. Rf2 Be5 36. g4 Rb6 37. Rf5 Rxb4 38. Rxe5 c3 39. Rc5 Rb3 0-1. Club players might have wished for a few more moves here, or perhaps there was a loss on time? Either way, a mobile distant queenside pawn majority must never be under-estimated. || 17. cxd5 | Played on the grounds a central pawn is always worth taking. There could be some quibbling over the use of the word, "Always", there, but the general principle is a good guide as to which variations to analyse first. Instead, 17. cxb5, just hands black a wonderful pawn centre just ready to roll, don't even think that could be controlled with pieces. Similarly, 17. Nxb5 Nxb5 18. cxb5, is asking for the same trouble. Black to play seems to have a very serious case of, "Activitis"! || 17. ... c4 | A nice blow. This dynamic pawn move often occurs when the white c-pawn has been tempted to capture on d5, obviously depending on how just much activity is thought to be available in return for the offered pawn. In this instance the tactics are sound, perhaps take some time to work out what happens if white snatches the bait. || 18. bxc4 bxc4 19. Be4 White assesses that the black c4 pawn should be left alone, and instead seeks to reduce the danger to his own king by neutralising the black b7 bishop. The dangers of taking the offered black c4 pawn can be seen in the lines: (A). If, 19. Bxc4 Rc8 20. Bd3 Rxc3, white simply drops a piece for a couple of pawns, and the d5 pawn is hardly secure. (B). Or if, 19. Bxc4 Rc8 20. Qb3 Qc7 21. Rb1 Qxc4 22. Qxb7 Qxc3 23. Qxa7 Ra8, the options for white now expand, but the final outcome should be white drops the a2 pawn, and is again simply a piece for 2 pawns down. (C). Or if, 19. Bxc4 Rc8 20. Qa4 Qc7 21. Rb1 Qxc4 22. Qxc4 Rxc4 23. Rxb7 Rxc3 24. Rxa7 Nxd5, again white is a piece for 2 pawns down. (D). Or if, 19. Bxc4 Rc8 20. Qa4 Qc7 21. Rb1 Qxc4 22. Rxb7 Qxc3 23. Qxa7 Ne8, black is temporarily uncoordinated, but next move there is either, Qc5, or, Rc7, breaking the white grip on the black 2nd rank, those isolated white pawns will not be easy to defend. || 19. ... Nxd5 | Black cannot avoid some simplification and so chooses a line which might activate her queen, not much but at least something with which to play. || 20. Nxd5 | The white c3 knight had little prospect of joining in on the kingside and is so very happy to trade itself off. Instead, 20. Bd2, only leaves another set of pieces without options of being defended by a pawn, such pieces hanging on air-hooks must take great care to defend one another. || 20. ... Bxd5 21. Qg4 | White announced kingside aggressive intent as far back as move 5 with, pawn f4. Patience is a virtue, some 16 moves later white at last creates some real kingside pressure, the first threat being, Bxh6, exploiting the pin on the black g7 bishop. || 21. ... Bxe4 | Black has little better than to release the central tension. A disaster to be avoided was, 21. ... Kh7 22. f6+ Bxe4 23. Qxg7+ mate, this should not happen, escaping the pin is sensible, but stepping into an x-ray attack from the white e4 bishop is suicidal. White to play now has a difficult choice to make regarding the black e4 bishop. Clue: Fischerism - "Obvious Therefore Dubious." || 22. Nxe4 | Grand Rabbit wonders about the aspirations of white here? The pawn structure imbalance, white a mobile kingside majority, black 4 pawn islands but a couple of disconnected passed pawns, should gives both players thoughts of playing for a win. It is black who needs to be more careful in the short term, the split e5 and c4 pawns need far more support if they are to advance, in fact they could be fairly quickly in need of defenders just to survive. So, is white wishing to keep complications going on the basis of there being weaknesses in the black position? There was instead an opportunity to defuse the complications with, 22. Bxh6, threatening, Qxg7+ mate, some ideas run: (A). If, 22. Bxh6 Qd7 23. Bxg7 Qxg7 24. Qxe4 Nxf5 25. Qxc4+, white is a pawn up, black is going to suffer for a long time. (B). Or if, 22. Bxh6 Nxf5 23. Bxg7 Ne3, playing for tricks, dangerous as, 24. Qxe4 Nxf1 25. Bxf8 Nd2 26. Qf5 Qxf8 27. Qg5+, backwardly attacking the loose black d2 knight, white is winning a piece. (C). Or if, 22. Bxh6 Nxf5 23. Bxg7 Ne3 24. Qxe4 Kxg7 25. Qxe3, white has won a piece. But black has not yet found the best defence. (D). Or if, 22. Bxh6 Nxf5 23. Bxg7 Nxg7 24. Qxe4 Qd4 25. Rad1, and white has the more pleasant position to play, those central black pawns are potential targets, but there is a very long way to go. || 22. ... Nxf5 | A very useful multi-purpose quadrupler. Firstly, black snatches a potentially dangerous white pawn. Secondly, the target black h6 pawn is given an extra defender. Thirdly, white must take into account the threat of, Ne3+, forking an exchange, this will steal a little time on the clock. Fourthly, when a unit moves it vacates a square for someone else. All very good from the black perspective, but is not white doubly-attacking the black f5 knight, with the f1 rook, and the g4 queen? || 23. Ba3 | A doubler. Firstly, the immediate black threat of, 23. ... Qd4+, which would have picked up the white a1 rook is neutralised. Secondly, there is a useful development tempo against the black f8 rook. And do not forget, white has a double-attack on the black f5 knight yet to be resolved. Instead the hasty, 23. Rxf5, costs white as, 23. ... Rxf5 24. Qxf5 Qd4+, and the loose white a1 rook falls, black would be a safe exchange up. || 23. ... Qd4+ | A tripler. Firstly, the centralised black queen nibbles at the white a1 rook, this means the f1 rook dare not lift itself off the white back rank. Secondly, the white e4 knight is pinned to the g4 queen. Thirdly, the black queen supports a possible, Ne3, advance. || 24. Kh1 | Perhaps a case of - "Win Something, Lose Something"? The Win: On h1 the white king is surely out of danger, right? The Loss: On h1 the white king is in danger of a back-rank mate. So which is it, is the white king on h1 in danger or safe? Too early to say, just be in mind of both concepts as the complexity cranks up. Instead, 24. Qf2 Qxe4 25. Bxf8 Rxf8, black is happy to have 2 minor pieces plus a pawn against a white rook. Or, 24. Nf2 Qxg4 25. Nxg4 Rf7, white is a pawn down without any coordination against the black central pawns, looks dismal for white. If black wishes for more, 24. Nf2 Ne3, sets off complications as both f-file rooks hang. The game now becomes a mutual test of, "Tactical Event Horizons", as each sets out to attack the other, someone is going to get a bloody nose. If you have read the result line in the game header then you know who, but can you work out how? || 24. ... Ne3 | Aha, the endangered black knight gets out of the firing line with a tempo attack on the white g4 queen, so all is safe in the black camp, right? If only life were so simple... || 25. Qe6+ | Two can play the, "Tempo-Gain", game. The white queen escapes attack with a tempo-gaining check, but both f-file rooks are still attacked by an opposing minor piece, and do not forget that the white e4 knight is now undefended. The complexity is escalating, simple gut-judgement rarely suffices as to whether the tactics at both end of the board should be favourable to one player and not the other. Sometimes you just have to put your head in your hands and start crunching lines out. Of course, positional skittles hanging in the air can assist in hinting in which direction to calculate. White must seek ways of getting after the black king, fairly easy to decide on that policy. But what of black, there seems no sensible means of chasing the white king from here, does there? About the only plus for black to try to exploit is the weak white back rank. The still vulnerable white a1 rook needs protection from the f1 rook, there is a possibility the king's rook could soon become a target for overloading. Both attacks need a queen kicking hard, which means each queen is unlikely to think about returning to strengthen the defences. All this means there will be forcing lines to be found at both ends of the board. Appropriate Fischerism: "In chess it is important to know when to punch and when to duck." Fine, but sometimes one just reaches a position of mutual-slugging until one or the other gets knocked down. Meanwhile the black king must run away, but to where and why? || 25. ... Kh7 | A paradox. Surely the black king will be exposed to checks on h7, a light square, while hiding on h8, a dark square, would offer much greater protection? Not so, on h8 the black king could become a victim in the, "Tempo-Gain", game. Black is scenting blood, precision is required in order to achieve the maximum reward the position has to offer. || 26. Bxf8 | The mistakes are just waiting to happen. Instead, 26. Rxf8 Qxa1+ 27. Rf1 Qxf1+ mate, is painful, and shows why the black king ran onto h7 to avoid any white, Rxf8, captures being a check. Black to play must be precise here, remember the Fischerism: "Obvious Therefore Dubious." || 26. ... Rxf8 | The black queen's rook gets into the attack. Yes, rooks are designed to attack from their own back rank, though given the opportunity, the opposing 2nd or back rank are usually much better. Instead the apparently, "Obvious", 26. ... Nxf1, is disastrous, but only if white is tactically awake, the ideas run: (A). If, 26. ... Nxf1 27. Nf6+ Kh8 28. Qg8+ mate. (B). Or if, 26. ... Nxf1 27. Nf6+ Bxf6 28. Qf7+ Bg7 29. Qxg7+ mate. (C). Or if, 26. ... Nxf1 27. Nf6+ Bxf6 28. Qf7+ Kh8 29. Qxf6+ Kg8 / Kh7 30. Qg7+ mate. (D). Or if, 26. ... Nxf1 27. Nf6+ Kg6 28. Rxf1 Rxf8 29. Ne7+ Kh7 30. Nxf8+ Bxf8 31. Qf5+ Kg8 32. Qxf8+, white is a rook up and should mate black quite quickly. (E). Or if, 26. ... Nxf1 27. Nf6+ Kg6 28. Rxf1 Bxf8 29. Ne7+ Kh5 / Kh7 30. Qf5+, followed by, 31. Nxf8, white is a piece up and should find a mate quite quickly. || 27. Rfe1 | White decides to accept the loss of the e4 knight, but this apparent, Rfe1, backing-off is actually an attacking move. Again, white must avoid, 27. Rxf8 Qxa1+, forcing mate. In the ever-present choice of, "Punch Or Duck", white could have ducked with, 27. Ng3, offering material to simplify the position. The idea is, 27. Ng3 Nxf1 28. Rxf1 Rxf1+ 29. Nxf1, when either black, 29. ... Qf2, or, 29. ... Qd1, are answered with, 30. Qxc4, and white should be holding a draw, but does black have an improvement? How about, 27. Ng3 Nxf1 28. Rxf1 Rxf1+ 29. Nxf1 Qd3, attacking the loose white f1 knight and also preventing the white queen from starting an annoying sequence of checks with, Qf5+. So after, 29. ... Qd3 30. Kg1 c3, the web of analysis expands dramatically, without Fritz and friends to crunch away it comes down to bio-organic judgement, which suggests white has tremendous problems, just how can the advance of the black c-pawn be prevented? || 27. ... Qxe4 | So black has given up an exchange for a couple of white minor pieces, the central pawns have sufficient support around them to think of advancing, and the white rooks have to take a few moves to achieve coordinated activity. And please notice after, 27. ... Qxe4, black is threatening, Qxg2+ mate. All in all, the skirmishing seems to have favoured black, but it is of course white to move, any ideas to fight for an advantage? Clue #1: "The power of the pin is to paralyse." Clue #2: It is not only in a tug-of-war or sculling that one makes progress by going backwards. || 28. Qh3 | A doubler. Firstly, the white queen guards the g2 pawn, the immediate black mate threat is cancelled out. Secondly, there is now a double-attack on the pinned black e3 knight, it seems black is about to lose a piece. These, "Tactical Event Horizons", are tricky beasts. One never really knows if sufficient investigation down a particular tactical line has been undertaken, well not until it is too late. || 28. ... Qd4 | As with all good pieces of music, if there is a good theme running, then repeat it. The black queen returns to nibbling on the white a1 rook, which means the white back rank becomes potentially vulnerable again. There is also a much more sinister reason for the black queen returning to the d4 square. A particular black piece-formation is being planned, one which is the dream of many a chess player to achieve. || 29. Rac1 | What? White sets up a double-attack on the black e3 knight only to decline capturing it? Aha, if, 29. Rxe3 Qxa1+, is that repeating back-rank mating theme coming round again. Fine, but what if, 29. Qxe3, when that unhappy white a1 rook remains protected by the static white e1 rook? Black demonstrates that the white king's rook has never been happy since stepping out of the box: (A). If, 29. Qxe3 Rf1+ 30. Rxf1 Qxe3, black has queen, bishop and 2 passed pawns against the white rook pair, a comfortable win. (B). Or if, 29. Qxe3 Rf1+ 30. Qg1 Rxg1+ 31. Rxg1, is the same decisive material advantage for black. So now black has a very comfortable position with which to play, perhaps settle down for a long fight, right? Maybe so, or maybe not, all depending on your, "Tactical Event Horizon", capabilities... || 29. ... Ng4 | Aha, the re-grouping begins with the black knight saving itself, right? White has a shock reply ready... || White resigns, 0-1 | This is not resignation just because prospects seem miserable, the tactics are still flowing. The immediate threat is, 30. ... Nf2+, winning the white queen, but surely white has sufficient flexibility to avoid material loss? Not so, the ideas run: (A). If, 30. Rcd1 Nf2+ 31. Kg1 Nxh3+, a double check, the white queen is lost for nothing, and worse is to follow. (B). Or if, 30. Rf1 Rxf1+ 31. Rxf1 Nf2+ 32. Rxf2 Qxf2, black is a piece plus pawn up and white has no chance of finding a perpetual attack on the black king. (C). Or if, 30. Qc3 Nf2+ 31. Kg1 Nd3+, white rooks forked, 32. Qxd4 exd4, and white must lose an exchange for the black de3 knight, black will emerge at least a piece up. All these are good for black, but there is a really cute trick waiting to be played in amongst this lot. (D). Or if, 30. Qc3 Nf2+ 31. Kg1 Nh3+ 32. Kh1, and black has a lovely shocker available here with, 32. ... Qg1+, forcing a deflection of the never-happy white e1 rook, 33. Rxg1, but this entombs the white h1 king so that, 33. Nf2+, is a smothered mate. The smothered mate pattern will have been well-known to black from home-study, this will not have been invented at the board. So just when did the thought of such an opportunity occur to black? Perhaps the wrong question. It is most likely that when the moves, 23. ... Qd4+ 24. Kh1, appeared that black began wondering if the f5 knight could be, "Sensibly Manoeuvred", to create the smothered mate threat. It was a possibility to aim for providing all the moves leading up to black, 29. ... Ng4, fitted in with the demands of the position, and as it happened, they did. || * * * ## Unannotated Game. White: I. Hausner, 2370. Black: Z. Polgar, 2275. Event: Kecskemet 1983. Result: 0-1 in 29 moves. Opening: King's Indian Defence, Four Pawns Attack, E76. 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 O-O 6. Nf3 c5 7. d5 e6 8. dxe6 fxe6 9. Bd3 Nc6 10. O-O Nd4 11. Ng5 e5 12. f5 h6 13. Nh3 gxf5 14. exf5 b5 15. b3 Bb7 16. Nf2 d5 17. cxd5 c4 18. bxc4 bxc4 19. Be4 Nxd5 20. Nxd5 Bxd5 21. Qg4 Bxe4 22. Nxe4 Nxf5 23. Ba3 Qd4+ 24. Kh1 Ne3 25. Qe6+ Kh7 26. Bxf8 Rxf8 27. Rfe1 Qxe4 28. Qh3 Qd4 29. Rac1 Ng4 White resigns, 0-1 * * *