The new game board we are using provide more functions than its predecessors. Below we offer some explanations on what these new functions are and how to use them to your better viewing and enjoyment.

Initially we must advise that, at the moment, the Google Chrome browser is the only one that will activate the chess engine.

Below are two games of Victor Kortschoy taken from his book "My Best Games".

[Event "Hoogovens"] [Site "Wijk aan Zee"] [Date "1997.01.21"] [Round "3"] [White "Kortschnoj, Viktor"] [Black "Onischuk, Alexander"] [Result "1-0"] [ECO "A85"] [WhiteElo "2635"] [BlackElo "2580"] [Annotator "Kortschnoj"] [PlyCount "67"] [EventDate "1997.01.18"] [EventType "tourn"] [EventRounds "13"] [EventCountry "NED"] [EventCategory "16"] [SourceTitle ""My Best Games""] [Source "Ohms"] [SourceDate "1999.07.01"] 1. c4 f5 2. Nc3 Nf6 3. d4 g6 4. f3 $5 {This idea occurred to me some time ago, some twenty years before the present game. In the Dutch Defence, Black takes control of the central e4 square, and bases his counterplay on the possession of this square. But how will Black feel if the e4 square is nevertheless controlled by White? I tried this idea in a game with Lombardy at Lone Pine. 1979. In a position with a great positional advantage, I blundered and lost the game. And as a result, for many years I discarded the essentially quite good and logical opening idea that had been tested in that game. And now I returned to it, to the surprise of my young opponent.} Bg7 5. e4 fxe4 6. fxe4 d6 7. Nf3 {White develops his pieces in the most logical way. The set up with Be2 and Bg5 also comes into consideration.} O-O ({It would seem to be more difficult to retain an opening advantage after} 7... e5 {In the event of} 8. d5 Nh5 {Black has a good game. White can count on some advantage after}) (7... e5 8. dxe5 dxe5 9. Qxd8+) 8. Be2 c5 ({It would seem to be more difficult to retain an opening advantage after} 8... e5 9. dxe5 dxe5 10. Qxd8 Rxd8 11. Bg5 c6 12. O-O) 9. d5 Ng4 10. O-O Ne5 ({A year after this game, I again played the variation - in a rapid-play game against the young Polish player Miton. He very slightly improved Black's play -} 10... Nd7 11. Qe1 Nde5 12. Kh1 e6 13. Qg3 exd5 14. Bg5 Qd7 15. Nxd5 {but here too, after}) (10... Nd7 11. Qe1 Nde5 12. Kh1 e6 13. Qg3 exd5 14. Bg5 Qd7 15. Nxd5 {White gained a menacing initiative on the kingside.}) 11. Bg5 Nbd7 {Diagram [#]} 12. Kh1 $1 {The e5 square is the pride of Black's position, but it is overloaded with pieces aiming to occupy this square. Very often such a detail proves 0to be a serious drawback to a position! Sooner or later Black will be forced to exchange on f3 and White is ready to recapture with the pawn!} h6 13. Bd2 a6 14. Qc2 Rb8 15. a3 Qe8 {The position is unusual - it is not often that one like this is encountered. It is clear that the a7 pawn divides Black's position in two, hindering the coordination of his pieces. This means that in the first instance Black must consider how it will turn out if he advances his e-pawn - one square or two.} 16. b4 Nxf3 17. gxf3 b5 ({Here} 17... e5 $5 { was possible, with a good game for Black. If White does not exchange on e6, then Black has chances of seizing the initiative on the kingside, while after dxe6 Black frees his position even more, by playing his queen to h3 and his knight - via e5 and c6 - to d4.}) 18. cxb5 axb5 19. f4 ({The advance of the f-pawn was planned by White , but it would have been better not to hurry with this move. Stronger was} 19. Rab1 c4 (19... Ne5 20. bxc5 dxc5 21. f4 {with a clear plus for White. or}) 20. Be3 Ne5 21. f4 Ng4 22. Bg1 {with advantage to White.}) (19. Rab1 Ne5 20. bxc5 Bh3 21. c6 $1 {with more than sufficient compensation for the exchange.}) (19. Nxb5 {also came into consideration -- after} Bxa1 20. Nc7 Qf7 21. Rxa1 Ne5 22. Bxh6 {White stands better.}) 19... Qf7 ({And here} 19... e6 $1 {was essential. In the event of} 20. dxe6 $6 Qxe6 21. Nxb5 Bb7 22. Bc4 d5 23. Nc7 Qh3 24. Nxd5 Bxa1 25. Rxa1 Qf3+ {Black gains a draw by perpetual check, but he can also sacrifice his queen}) (19... e6 20. dxe6 Qxe6 21. Nxb5 Bb7 22. Bc4 d5 23. Nc7 Qxe4+ 24. Qxe4 dxc4 25. Nd5 Nf6 26. Qxg6 Nxd5 27. Kg1 Kh8 {with a dangerous initiative. White should continue}) ( 19... e6 20. Nxb5 Bxa1 21. Rxa1 exd5 22. Nxd6 Qe6 23. e5 {or}) (19... e6 20. Nxb5 Bxa1 21. Rxa1 Qe7 22. Nc7 {with full compensation for the material sacrificed.}) 20. Rg1 Bd4 {Diagram [#]} ({This move (knowing the continuation of the game!) looks rather naive. But here the so long-waited .... e7-e6 would now have been clearly too late.} 20... e6 21. Nxb5 {(and here the book variation goes astray giving 21. ....Bxg1, but of course the bishop is on g7 and .... Bg7 has yet to be played.)}) 21. e5 $1 {Of course! Everything has long been ready for this move!} Nxe5 {Forced.} 22. fxe5 Bf5 23. Bd3 Bxd3 ({Or} 23... Bxc3 24. Bxf5 Qxd5+ 25. Be4 Qxd2 26. Rxg6+ Kh8 (26... Kf7 27. Qxd2 Bxd2 28. Rf1+ Ke8 29. Bc6+) 27. Rag1 Rf2 (27... Rg8 28. Qxc3) 28. Qxd2 Bxd2 29. Rg7 Bg5 30. Rh7+ Kg8 31. Rxh6 {and wins.}) 24. Qxd3 Bxg1 25. Rxg1 Kh7 26. bxc5 { For the moment White has only a slight material advantage. His trump cards are the mobile pawns in the centre, one of which may slip through to the queening square.} dxc5 27. Ne4 Qf5 ({Here and on the following move Black could have exchanged queens. After} 27... Qf3+ 28. Qxf3 Rxf3 29. d6 {it is probable that he would soon have had to give up one of his rooks for the d-pawn and one of White's minor pieces. To avoid a technically lost ending, Onischuk seeks salvation in complications.}) 28. Qe3 Qh5 29. d6 (29. Nxc5 { was simpler.}) 29... Rf3 $2 {Diagram [#]} ({More tenacious was} 29... exd6 30. Nf6+ Rxf6 31. exf6 Re8 $1 32. Qf4 (32. Qxe8 Qf3+ {with a draw.}) 32... Re2 ({or } 32... Qd5+ 33. Rg2 g5 {when White still has to demonstrate the superiority of his piece over the pawns.})) 30. dxe7 $1 {The young player had not seen this move.} Rxe3 31. Nf6+ Kh8 32. Nxh5 Rd3 33. Rxg6 Rxd2 34. Rd6 1-0 [Event "Buenos Aires"] [Site "Buenos Aires"] [Date "1960.07.04"] [Round "9"] [White "Kortschnoj, Viktor"] [Black "Gligoric, Svetozar"] [Result "1-0"] [ECO "E64"] [Annotator "Korchnoy"] [PlyCount "81"] [EventDate "1960.06.23"] [EventType "tourn"] [EventRounds "19"] [EventCountry "ARG"] [SourceTitle ""My Best Games""] [Source "Ohms"] [SourceDate "1999.07.01"] 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. g3 O-O 5. Bg2 d6 6. Nf3 c5 7. d5 Na6 {This opening system aims to undermine the white pawn centre after .... .Nc7 with the help of the b- and e-pawns. It is (and still is occasionally today) the preferred opening of Yugoslav and Argentinian masters; Gligoric used it to especially good effect, because the exciting battle which now follows suit his style. I, incidentally, also love this type of battle., and I am proud to say that I triumphed over Gligoric three times with his favourite variation. But - be assured - it is not easy to beat a grandmaster in his favourite opening.} 8. O-O Nc7 9. a4 a6 10. Bf4 ({A critical move, aimed at countering Black's planned .... e6-e5. Given the opportunity, White wants to play e2-e4-e5, and the bishop on f4 will support this advance. 10.e4 is also not bad (also probably the best move). Position play, incidentally is not so simple. Sometimes you have to disguise your plans, so that the opponent does not gain the chance to frustrate them. For example, in a later game with the same opponent (Belgrade 1964) I chose the modest} 10. Ra2 {Now (after 10.Bf4) 10. .... Nh5 11.Bd2 e6 is probably the best. But Black does not to remove his knight from the centre he tries to solve the problem by tactical means.}) 10... Rb8 ({Another, more cautious, possibility was} 10... b6 {followed by .... Rb8 and b6-b5 - slowly, but surely. }) 11. a5 b5 12. axb6 Rxb6 13. Ra2 ({My opponent, as well as I, knew of course that since the game Furman-Bertok, Leningrad 1957,} 13. Na4 {was accepted as the strongest move here, and after both}) (13. Na4 Rb4 ({and} 13... Rb7 14. Ra3 ) 14. b3 Nh5 15. Bd2 {White has better prospects. But although it is less energetic, I had twice tested the text move successfully in 1957 against Khasin and against Uhlmann in 1960. Consequently, I felt quite safe, whereas Gligoric, confronted by a surprise, reflected more than 40 minutes on his next move.}) 13... Re8 $1 ({Gligoric reveals a deep understanding of the position. The text move seems mysterious, but in reality it involves an original idea: with the help of an exchange sacrifice, Black takes over the initiative.} 13... e5 {would have been weaker in view of} 14. dxe6 Bxe6 15. b3 {when the threats of 16.Na4 and 26.Rd2 are very unpleasant.}) 14. b3 (14. Na4 {was more cautious, but White too did not want to remove his knight from the centre. Now Black carries out his idea.}) 14... e5 $1 15. dxe6 Nxe6 16. Na4 {Diagram [#]} ({ White is forced to accept the complications imposed by his opponent. as after} 16. Bd2 d5 ({or} 16... Nd4)) ({or} 16. Be3 Bd7 {Black has a free game without any problems.}) 16... Nxf4 $1 ({Of course not} 16... Rb7 $2 17. Be3 $1 { and Black is in difficulties.} d5 {cannot be played because of the loss of a pawn while if} (17... Bd7 18. Ne5) (17... Ne4 18. Nd2 Nxd2 19. Rxd2)) 17. Nxb6 Qxb6 (17... Nh3+ {is weaker} 18. Bxh3 Bxh3 19. Rxa6 Bxf1 20. Kxf1) 18. gxf4 Ne4 {With this sacrifice, Black has gained optimum mobility for all of his pieces . White's task of coordinating his forces under hostile fire is not an easy one.} 19. Qd3 $1 {It cannot be said that the queen is ideally placed here, but unfortunately this move is the only acceptable one, the queen avoids the fork . .. Nc3, and White maintains his pressure along the d-file on the pawn at d6.} Nc3 ({In complicated positions with many tactical possibilities, the selection of a move is based on the correct evaluation of the variations and on intuition, but is sometimes also a matter of taste. Gligoric had prepared the move.... Nc3and it was difficult or him to decide on the tempting .... Bf5. His intuition did not deceive him, the bishop move does not give Black full compensation. For example: after} 19... Bf5 20. Nh4 {the continuation} Nc3 21. Nxf5 Nxa2 22. Nxg7 Kxg7 23. f5 $1 Nb4 24. Qd2 {is unfavourable for Black, while if}) (19... Bf5 20. Nh4 Nxf2 21. Qf3 Ng4 (21... Bg4 {is of course impossible because of} 22. Qg3) (21... Be4) ({and} 21... Ne4 {leads after} 22. Nxf5 gxf5 23. Bh3 Nc3 24. Rd2 Qxb3 25. Kh1 $1 Qxc4 26. Bxf5 {to a position where White gains a dangerous attack on the king}) 22. Nxf5 gxf5 23. e4 $1 (23. Qb7 Bd4+ 24. e3 Qxb7 25. Bxb7 Nxe3 {and Black stands better.}) 23... Rxe4 ( 23... Ne3 24. Re1 Rxe4 25. Rae2) 24. Qd3 Re8 {and with material equal, White's chances seem to be better.}) 20. Rd2 d5 $6 ({With} 20... Bf5 21. Qxd6 Qxd6 22. Rxd6 {Black could have gone into an ending in which the active placing of his pieces secures him equal chances. From a personal standpoint, however, I can understand Gligoric : the black position looks so promising that you do not want to simplify, but to continue playing on.}) 21. cxd5 Bf5 22. e4 {White has an easy choice: he only has this move. Black, however, is faced with a difficult choice. Diagram [#]} Nxe4 ({As so often happens in such cases, Black does not find the right way! It is true that after} 22... Rxe4 {White seems to be winning} 23. Nh4 Rxf4 24. Nxf5 Rxf5 25. d6 Bd4 26. d7 Qd8 27. b4 Nb5 28. bxc5 Rxc5 29. Qe4 Qxd7 30. Rfd1 Rc4 31. Bf1 Bxf2+ ({or} 31... Nc3 32. Rxd4) 32. Rxf2) ({But after} 22... Bxe4 {the situation was much more complicated for the lost exchange, or} 23. Qe3 Bd4 $1 24. Nxd4 cxd4 25. Qe1 ({ or} 25. Qg3 d3 26. Qe3 Qxe3 27. fxe3 f5) 25... Qb8 ({or} 25... Qb5 {and Black has more than sufficient compensation for the lost exchange.})) 23. Re2 Bf8 ({ After} 23... Re7 {White would have the choice between a continuation similar to the game, and} 24. Qe3 Bd4 25. Qc1 $1) 24. Ne5 $1 {This is the quickest way of suppressing Black's initiative.} Nxf2 25. Qf3 (25. Qc3 Nd3 26. Nxg6 hxg6 27. Rxe8 {would also have won, although there would still have been technical difficulties.}) 25... Nd3 26. Nc4 {Diagram [#]} ({Of course not} 26. Nxd3 Rxe2 27. Qxe2 Bxd3 28. Qxd3 c4+) 26... Qxb3 ({The last opportunity to complicate the game. After} 26... Qd8 27. Rxe8 Qxe8 28. Rd1 {White wins easily, by exploiting the strength of his passed pawn.}) 27. Rxe8 Qxc4 28. Qe2 Kg7 29. Rd8 ({Technically simpler was} 29. Be4 {with an exchange of one of the active black pieces.}) 29... Qb4 30. Kh1 ({To} 30. d6 {Black could have replied} Qb6 { as} 31. Qe7 {is hardly enough to win in view of} Bxe7 32. dxe7 c4+ 33. Kh1 Bd7 34. Rxd7 Qe6 35. Rc7 Qe2) 30... Qb6 31. Qe8 Bd6 32. Qh8+ Kh6 33. Qf6 ({With} 33. Rg8 {White could also have played for mate but because of his big material advantage this is not necessary.}) 33... Bc7 34. Qxb6 Bxb6 35. Rd6 Bc7 36. Rxa6 Bxf4 {Diagram [#]} 37. Ra4 $1 Be5 ({Against} 37... Bg5 {White was planning}) ({ Against} 37... Kg5 {White was planning} 38. h4+ Kg4 39. Be4 {but now the end comes even more quickly.}) 38. Rxf5 gxf5 39. d6 Bf6 40. d7 Kg7 ({Or} 40... Ne5 41. Ra6 Nxd7 42. Rd6) 41. Ra8 1-0

The panel immediately below the board contains icons for operating the board.  If you let your pointer hover over each icon the function will be displayed.  The fist group of arrows will move the pieces on the board. the central two arrows will provide automatic replay of the game.

The "H" shaped icon will download the games in pgn format.  Make certain that you make your chess application the default programme to receive pgn files.

The circular icon activates the engine (Fritz 13) to a panel below the icons.  Google Chrome is, at the moment, the only browser to activate this function.

The circular arrow will flip the colour of pieces o the board.

The square icon will enlarge the board and analysis etc.

The icons below the analysis pane do not apply to this playing format.