Monday 29 March 2021

Town and Gown

Aberystwyth were facing more familiar opposition on Thursday 25th March when we played Aberystwyth University's A team in a hard-fought match. On top board Rudy van Kemenade got an edge against Owain Davies's Vienna Game when a brief flurry of middle-game tactics left the White pawns more vulnerable. Nevertheless there was still much work to be done in a hihg-quality game before Black secured the point. Adam Watkin-Jones played cautiously against Matthew Horhey, holding back the centre pawns and fianchettoing both bishops. Nevertheless Black managed to set an unexpected trap in the opening, to win the game after only a dozen moves. Tom Gunn's Sicilian against Kieran Judge led, as so often, to a position with the players attacking each other's kings on opposite sides of the board - unusually for this opening, though, it was Black castled on the queenside and White on the kingside. When the promising White attack ground to a halt, Black was able to break through on the other wing. Sam Holman's Austrian Attack against Gabriela Griffiths's Pirc ripped open the kingside in the approved fashion, but she defended staunchly, belying her lower rating, and the game was even for a long time. Black would probably have held out for a draw but for a mistake in time trouble. The result was 3-1 to the town side.

[Event "Dyfed Online League"] [Site "Lichess"] [Date "2021.03.25"] [Round "8.1"] [White "Davies, Owain"] [Black "Van Kemenade, R."] [Result "0-1"] [ECO "C25"] [WhiteElo "1762"] [BlackElo "1999"] [Annotator "kemen"] [PlyCount "100"] [EventDate "2021.??.??"] [WhiteTeam "U. C. Aberystwyth A"] [BlackTeam "Aberystwyth"] 1. e4 e5 2. Nc3 {avoiding the Petroff-Bl's known specialism} (2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Be7 7. O-O O-O 8. Nbd2 Nf6 {Davies-Pinch, Dyfed League 2020,1-0}) 2... Nc6 (2... Nf6 {main, but Rudy had no previous Vienna games by Owain, so steered away from the various theoretical lines that may have been prepared for, eg} {a} 3. f4 ({b} 3. Bc4 Nxe4 4. Qh5 Nd6 5. Bb3 Nc6 6. Nb5 g6 7. Qf3 f5 8. Qd5 Qe7 9. Nxc7+ Kd8 10. Nxa8 b6 {The Frankenstein-Dracula var, a number of Rudy's games with this are in the databases- the earliest example though is Fuller-Van Kemenade, South African Schools ch 1963,0-1}) (3. g3 Bc5 4. Bg2 h5 {another complex line- Jane Richmond-Van Kemenade,Dyfed Open 2008,0-1}) 3... d5 4. fxe5 Nxe4 {when Wh has} 5. Nf3 {or the Oxford var} (5. d3)) 3. g3 (3. f4 exf4 4. Nf3 g5 {also played at elite GM level}) 3... Bc5 (3... h5 {another GM line eg} 4. h3 Bc5 (4... h4 5. g4 Nd4 6. d3 Bb4 {Walker-Van Kemenade, Leeds League 1993,0-1}) 5. d3 h4 6. g4 Qf6 (6... Nge7 7. Bg2 d6 8. Be3 Be6 {Toczek-Van Kemenade, S Wales Autumn 2017,1-0}) 7. Nf3 Nd4 8. Nxd4 Bxd4 9. Qe2 c6 {L Cooper-Van Kemenade, Isle of Man 2003,1-0}) 4. Bg2 d6 5. Na4 (5. Nge2 {main} a6 (5... Nge7)) (5. d3 a6 6. Nd5 Nge7 7. Be3 Bxe3 8. fxe3 h5 {Pogson-Van Kemenade, Huddersfield Summer,1985, 1/2-1/2}) 5... Bb6 6. Nxb6 axb6 7. Ne2 Nf6 (7... f5 {58% for Wh}) 8. O-O O-O 9. d4 Bg4 (9... exd4 10. Nxd4 Bd7 11. b3 {4-3-1}) 10. f3 Bd7 11. d5 (11. Be3 { 1.5-0.5}) 11... Ne7 {Bl was happy to see the centre closed, which usually favours Ns rather than Bs. The position resembles a King's Indian , except that Bl is missing the B at g7 (which can land up as a bad B.Wh, though, has no possibility of the usual Q side play typical of normal King's Indians.} 12. Qd3 (12. b3 Ng6 13. Bb2 Qc8 14. Rf2 Qd8 15. Nc1 Qe7 16. Nd3 Ne8 17. Qe2 f5 18. f4 $11 {Darpan-Shah,IND AICF ch blind, 2014,1-0}) (12. c4 {Stockfish13- though here Wh does not have the early threat of c5 as in other King's Indian lines}) (12. g4 {looked interesting to Bl, holding up f5} Bb5 13. Rf2 Bxe2 14. Qxe2 Ng6 $15 {Stockfish13}) 12... Ne8 (12... b5 13. Bg5 c6 (13... Ne8) 14. Bxf6 gxf6 15. dxc6 Bxc6 16. Qd2 d5 $11 {Stockfish13}) 13. f4 f5 14. fxe5 dxe5 15. Bg5 Nd6 ( 15... h6 {is playable according to Stockfish13, as} 16. Bxe7 Qxe7 17. exf5 Nd6 18. g4 Bb5 19. Qe3 Bxe2 (19... Qh4) 20. Qxe2 e4 {gives Bl play on the bl squares, looks a bit suspicious to non-Engine eyes}) 16. Qc3 {Bl had scarcely looked at this, as this seems like a non-positional square for the Q, even though she is pawn-hunting.} (16. Nc3 {looks natural- improving the position of the N. Interestingly that lichess analysis has not offered any comments so far, it only does so at move19 when the N does go to c3,}) 16... Nxd5 {after looking a various options for a while, there are some lines where a q side pawn goes, but there looked to be good chances on a king side initiative if that happened} (16... h6 17. Bd2 (17. Bxe7 Qxe7 18. Qxc7 Rac8 (18... b5 19. Qb6 Ra6 20. Qf2 Rc8 $19 {Stockfish13 variant}) 19. Qxb6 Rxc2 {looked promising, & Stockfish13 gives it as winning for Bl after} 20. Rf2 fxe4 $19) 17... Ra4 18. Qxe5 Ng6 19. Qc3 Nxe4 20. Qe3 Re8 $11 {Stockfish13-is not one that Bl considered}) (16... Nxe4 17. Bxe4 fxe4 18. Rxf8+ Qxf8 19. Rf1 Qe8 20. Bxe7 Qxe7 21. Qxc7 Rc8 22. d6 Qe6 23. Qxb6 Rxc2 24. Qd8+ Qe8 25. Qxe8+ Bxe8 26. Nc3 Rxb2 27. Nxe4 {just looked murky, though Stockfish13 considers =}) (16... Bb5 17. Qxe5 Rf7 18. exf5 {just seemed to favour Wh, though Stockfish13 continues} h6 19. Bf4 Nexf5 20. Qe6 Bd7 21. Qg6 Rf6 22. Qh5 Nc4 23. d6 Nfxd6 24. Qd5+ (24. Bd5+) 24... Kh8 25. Qd4 $11) 17. Qxe5 {looked best for Wh to break up Bl's centre pawns} (17. exd5 Qxg5 18. Qxc7 Qe3+ {Stockfish13} (18... Qe7 19. Qxb6 Rac8 $17 {Bl's idea}) 19. Kh1 Qc5 $1 20. Qxc5 (20. Qxd7 Rf7 21. Qe6 Re8 { wins Q for R & B}) 20... bxc5 21. a3 b5 $19 {and despite equal material, Stockfish13 gives Bl as winning} 22. Rfe1) (17. Bxd8 Nxc3 18. Nxc3 Raxd8 $15 { though Wh has shed a pawn}) 17... Qxg5 18. Qxd5+ Kh8 19. Nc3 {a mistake- lichess Stockfish13 first comment of the game} (19. exf5 Bc6 (19... Rxf5 $11) 20. Qb3 Bxg2 21. Kxg2 Qd2 22. Qd3 Qxd3 23. cxd3 Nxf5 24. Kg1 $11 Kg8 25. Nc3 Rad8 {both Engines, though Wh will have to nurse the d3 pawn}) 19... Qe3+ 20. Kh1 {labelled inaccuracy by lichess} (20. Rf2 {is a little bit better, but is is very difficult working out why} fxe4 21. Qd2 Qxf2+ 22. Qxf2 Rxf2 23. Kxf2 Bc6 $19 {Stockfish13}) 20... Bc6 {lichess analysis calls this a blunder (apparently the only inaccuracy by Bl in the game)} (20... fxe4 {would be winning it seems- recapturing the pawn for Wh is not as straight forward as one would expect, mainly because of the delayed ...Bc6 move}) 21. Qd3 Qxd3 ( 21... Qc5 22. exf5 Nxf5 {preferred by Stockfish13, but is just level- with the text Wh is left with an isolated pawn that obstructs his B}) 22. cxd3 fxe4 23. dxe4 Kg8 24. b3 {4th choice Stockfish13, still =. However Bl thought this weakened the a pawn, and put another pawn on a wh square, considering} (24. a3 $11 {as better}) (24. Kg1 {improving the K position like Bl did first choice Stockfish13}) 24... Rae8 25. Rxf8+ Kxf8 26. Re1 (26. Kg1 {Stockfish13} Ke7 27. Kf2 b5 28. Rc1 Nf7 29. Ke3 b4 30. Ne2 Nd6 31. g4 Kf6 (31... Kd7 32. Ng3 Nb5 33. Rc2 Nc3 34. g5 Kd6 35. Nf5+ Ke5 36. Nxg7 Rg8 37. Nf5 Rxg5 38. Nd4 Rg6 $11) 32. Ng3 $11 {= does not mean draw here, rather that both sides have chances as there is still quite a bit of play left}) 26... b5 $15 {seeing if Wh will play a3, when the R has a target- after Ra8, Ra1 b4 comes} (26... Re5 27. b4 Nb5 28. Nxb5 Bxb5 29. Kg1 Re8 30. Rc1 c6 31. Rd1 Ke7 $15 {Stockfish13}) 27. Rf1+ Nf7 ( 27... Ke7 {Bl's first idea is a little better} 28. e5 Nf7 29. Bxc6 bxc6 30. a4 bxa4 31. Nxa4 (31. bxa4 Ra8 $17) 31... Nxe5 32. Re1 Ke6 $15 {Stockfish13}) 28. b4 {labelled an inaccuracy by lichess} (28. Nd5 Bxd5 {is what Rudy would have played, and given by Stockfish13 here} (28... Ra8 29. e5 Re8 30. Nxc7 Rxe5 31. Bxc6 bxc6 32. Rc1 Nd8 33. a4 bxa4 34. bxa4 Ke7 $11 {lichess Stockfish13-though the Bl K is still far better than its rival and could tip the edge on the Q side-Wh needs the defensive precision that Engines take for granted} 35. Na6 Ra5 36. Nb4 Kd6 37. Rd1+ Kc5 (37... Kc7 $2 38. Rxd8 Rxa4 39. Rd4 c5 40. Nd5+ $18) 38. Nd3+ (38. Rxd8 Kxb4 $17) 38... Kc4 39. Nf4 Ra8 40. Kg2 g5 41. Nd3 c5 42. Kf3 Nc6 43. Kg4 Nb4 44. Ne5+ Kb3 45. Kxg5 Rxa4 $11 {Wh's simplest course here is to give up the N for the c pawn , leaving Bl with R & N vs R}) 29. exd5 Re7 (29... Ke7 {Rudy} 30. Re1+ Kd8 31. Rxe8+ Kxe8 32. Be4 h6 {with hopes that d5 stil obstructs the B & needs defending, eg} 33. Kg2 Ke7 34. Kf3 Kf6 (34... Kd6 35. Kf4 Kc5 {is far from clear- the Engine sarts playing fancy moves} 36. Bg6 Nh8 37. Be8 Kxd5 (37... b4 38. Ke5 $18) 38. Bxb5 Ng6+ 39. Ke3 Ke5 40. Be2 $11 {and with d5 exchanged the B is now a little better than the N, but Bl has a better K position}) 35. Kf4 b4 36. Bd3 Nd6 37. Bc4 g5+ 38. Kg4 Ne4 39. Kh5 Nc3 (39... Kg7 40. Kg4 Kf6 41. Kh5) 40. Kxh6 Nxa2 41. h4 gxh4 42. gxh4 Nc1 43. Kh5 Kf5 44. d6 cxd6 45. Kh6 Kf6 46. Kh5 b5 47. Bg8 Kg7 48. Bd5 Kf6 49. Bg8 $11 {Stockfish13})) 28... Rd8 (28... Ra8 {Stockfish13, considered by Bl} 29. e5 Ke7 30. Nd5+ Bxd5 31. Bxd5 Nxe5 32. Bxb7 Rxa2 33. Rc1 Rb2 34. Rxc7+ Kf6 35. Bd5 Rxb4 $15 {Stockfish13}) (28... Ke7 {Stockfish13} 29. Kg1 Rd8 30. Rd1 Rxd1+ 31. Nxd1 Nd6 32. Nc3 Kf6 33. Kf2 Ke5 34. Ke3 {considered,} Be8 35. Nd1 Bf7 36. Nf2 Nc4+ (36... Bxa2 37. Nd3+ Ke6 38. Nc5+ Kf6 39. Kd4 {Wh's active K compensates}) ) (28... Bd7 29. Kg1 g6 $15 {Stockfish13- keeps all the tension}) 29. Nd5 Bxd5 (29... Ra8 30. e5 Re8 {transposes to a line covered in analysis above}) 30. exd5 Ke7 31. h4 $2 {given the match situation Wh was actually trying to win, but this gives Bl the kind of central blockade he was after} (31. Re1+ Kd6 ( 31... Kd7 32. Bh3+ Kd6 33. Re6+ Kxd5 {is what Bl had in mind} 34. Re7 Ne5 35. Rxc7 (35. Rxg7 c6 36. Rxb7 Kc4 37. Re7 Rd1+ 38. Kg2 Rd2+ 39. Kf1 Rxh2 40. Bf5 Kd4 41. Bxh7 Rxa2 $11 {but unbalanced, which is what Bl was after}) 35... Ke4 36. Bg2+ Ke3 37. Bxb7 Rd1+ 38. Kg2 Rd2+ 39. Kg1 {and Bl has nothing better than to accept the perpetual} (39. Kh3 {nearly gets mated, but Wh escapes} g5 40. Rc3+ Kd4 41. Rc5 g4+ (41... h5 42. Rd5+ $18) 42. Kh4 Rxh2+ 43. Kg5 h6+ 44. Kf5 (44. Kf6 $2 Nd7+ $19) 44... Nd3 45. Rd5+ (45. Rxb5 $2 Rh5+) 45... Kc4 46. a3 Ra2 47. Ke4 Re2+ 48. Kf5 Ra2 {repetition, Stockfish13})) 32. Bf1 {is the line given by both Engines} Ne5 33. Bxb5 Ra8 (33... Rf8 34. Kg2 Ra8 {is lichess, wasting a tempo, just to bring the Wh K one square nearer?!}) 34. a4 Kxd5 35. Rd1+ Ke4 (35... Ke6 36. Re1 c6 {is a more human attempt at winning} 37. Bc4+ Kd6 38. Bb3 h6 39. Rd1+ Kc7 40. Re1 Nd3 $5 (40... Re8 $11 41. a5 Re7 42. Kg2 Kd6 43. Rd1+) 41. Re7+ Kb6 42. Rxg7 Rf8 43. Rg6 Rf1+ 44. Kg2 Rf2+ 45. Kg1 (45. Kh3 Ne5 46. Rxh6 Nf3 47. Kg4 Nxh2+ 48. Kh5 Rf3 49. Bd1 Rxg3 50. Rf6 $11 {Wh's K is cut off, but so is Bl's N}) 45... Rb2 46. Be6 h5 47. h4 Rxb4 48. Rh6 Rxa4 49. Rxh5 $11 {Stockfish13-though here the B is better than the N}) 36. Re1+ Kd4 37. Rd1+ {and now Bl must repeat, as the attempt at winning is too dangerous with the liberated B} Kc3 $2 38. Rc1+ Kxb4 39. Rxc7 Rg8 40. Rxb7 $18 {Stockfish13}) 31... Ne5 $17 32. Rc1 {lichess labels this a mistake, & it makes life easier for Bl. However , its alternative of} (32. d6+ {fails to secure equality- no followup is given by lichess, but it was what Bl expected as it liberates the B} Kxd6 (32... Rxd6 33. Re1 Ke6 34. Bxb7 Rd4 35. Be4 Rxb4 36. Bxh7 c5 $15 {retains an edge for Bl- the 3 Bl pieces work together far better than Whs}) 33. Rd1+ (33. Bxb7 c6 $19 {traps the B}) 33... Ke7 34. Re1 Kf6 35. Rf1+ (35. Bxb7 Rd4 36. a3 Rd3 37. Kg2 Rxa3 38. Rc1 Rb3 39. Rxc7 Rxb4 40. Bd5 $11 {Stockish13- but in practical play Bl would have good winning chances with the extra pawn.})) 32... Kd6 $19 {from now on lichess claims four further inaccuracies by Wh, but te Wh K is still a long way off & Wh was also beginning to live on increments( Bl was down to 15 mins)} 33. Kg1 Ra8 34. Rc2 Ra4 35. Be4 {lichess inaccurate} (35. Rb2 {but Bl would have been content with} Nc4 36. Rf2 Rxb4 37. Rf7 Rb1+ 38. Kh2 Rb2 39. Kh3 Rxa2 $19 {Stockfish13- Bl pawns travel faster} 40. Be4 Ne5 41. Rxg7 h5 42. Rg5 Ng4 {threatens mate} 43. Bg2 b4 {the d5 pawn remains in Wh's way}) 35... h6 36. Kg2 (36. Rb2 {again insisted upon by lichess} Nc4 $19) 36... Rxb4 37. Bf5 Rc4 (37... Rd4 38. Be6 c5 {Stockfish13}) 38. Rb2 b4 39. Bc2 Rd4 40. Bb3 c5 (40... Nd3 41. Re2 Nc5 { Stockfish13 alternative}) 41. dxc6 bxc6 42. Rf2 c5 43. Rf8 (43. Rf4 {insisted upon by lichess, but just looks like surrender to non-Engine eyes} Rxf4 44. gxf4 Nc6 45. Bf7 Na5 46. Kf2 c4 {and Bl will win a B, or, at the very least win both Wh's K side pawns}) 43... c4 44. Rd8+ Kc5 45. Rc8+ Kd5 46. Ba4 { and , finally, lichess calls this inaccurate as it insists that Wh must play .. ....} (46. Kh3) 46... Rd2+ 47. Kh3 Rxa2 48. Rd8+ Ke4 49. Bb5 b3 (49... h5 { threatening a mate was considered, but pushing the pawns looked simplest}) 50. Rd1 c3 {a very complex game, against very stiff Wh resistence, with a drawn outcome possible at various points.} 0-1 [Event "Dyfed Online League"] [Site "Lichess"] [Date "2021.03.25"] [Round "8.2"] [White "Watkin-Jones, Adam"] [Black "Horhey, Matthew"] [Result "0-1"] [ECO "A04"] [WhiteElo "1918"] [BlackElo "1550"] [Annotator "kemen"] [PlyCount "24"] [EventDate "2021.??.??"] [WhiteTeam "Aberystwyth"] [BlackTeam "U. C. Aberystwyth A"] {[%evp 0,24,28,27,58,10,15,19,3,-18,-2,-5,-7,1,0,1,1,-3,22,1,-27,-30,-4,-151, -141,-136,-136]} 1. Nf3 c5 (1... Nf6 2. c4 {Watkin-Jones 2.5-05}) 2. b3 (2. c4 {main} g6 3. Nc3 Bg7 4. e4 e5 {Watkin-Jones vs Westwood,Dyfed League 2019,1/ 2-1/2}) 2... d5 3. Bb2 (3. e3) 3... Nc6 4. g3 (4. e3 {main}) 4... Nf6 5. Bg2 g6 {also elite GM level} (5... e6 {main, also at elite GM level}) 6. O-O Bg7 7. d3 O-O 8. Nbd2 Re8 (8... Qc7 {main, the R may be needed on the f file later}) 9. e3 {feels very passive, rather hippo'ish} (9. e4 {is a natural move in this version of a King's Indian Attack}) (9. Ne5 {is the other main line, holding up Bl from occupying e5}) 9... e5 10. h3 (10. e4 {just has to be played after} d4 {the QB can just return via c1 & in the meantime Wh just gets on with organing f4, & a Kingside pawn advance, hopefully followed by pieces, results 2-2-1}) 10... Nd7 {laying a trap} (10... Qc7 11. a3 h6 12. c4 (12. Rc1 Be6 13. c4 d4 14. e4 Nh5 15. Rb1 a6 16. Bc1 Bf8 17. Ne1 b5 {Stoma-Niekras, Warsaw Najdorf memorial 2016,0-1}) 12... d4 13. exd4 cxd4 14. b4 Bf5 15. Qb3 e4 { Zoler-Vouldis, Wld ch U26, men, Rotterdam 1998,1/2-1/2}) 11. Qe2 $2 {which Wh walks straight into} (11. e4 {just has to be played}) 11... e4 $19 12. Bxg7 exf3 0-1 [Event "Dyfed Online League"] [Site "Lichess"] [Date "2021.03.24"] [Round "8.3"] [White "Judge, Kieran"] [Black "Gunn, Tom"] [Result "0-1"] [ECO "B40"] [WhiteElo "1217"] [BlackElo "1398"] [Annotator "kemen"] [PlyCount "78"] [EventDate "2021.??.??"] [WhiteTeam "U. C. Aberystwyth A"] [BlackTeam "Aberystwyth"] 1. e4 c5 2. Nf3 e6 (2... d6 3. Bd3 {Judge 1.5-2.5}) 3. Bd3 {the Kopec System, perhaps more effective against 2..d6} Nc6 4. c3 d5 (4... Qc7 5. Bc2 d5 6. d3 Bd6 7. Be3 Nf6 8. O-O Ng4 9. e5 $5 Nxe3 10. exd6 Nxd1 11. dxc7 Nxb2 12. Nbd2 { Judge-Paffard, Dyfed League-Aberystwyth-Steynton A,,2019,1-0}) 5. e5 (5. O-O) ( 5. exd5 {more frequent}) 5... c4 {risky as Wh can open up the position with b3; though eventually Stockfish13} (5... Qc7 6. Qe2 Nge7 {0.5-4.5}) (5... Nge7 { 3-2-10}) 6. Bc2 Qc7 $15 {Stockfish13} (6... Nge7 7. O-O Ng6 8. Re1 Bd7 9. b3 b5 10. d3 cxd3 11. Bxd3 a6 12. a4 bxa4 13. c4 dxc4 14. Bxc4 Na5 15. Na3 Bb4 16. Bd2 Qb6 {Gonzalez Ruano Perez-Martin Rodriguez; Madrid Seniors ch 50+, 2020,0-1 }) (6... f6 {Cloud Engines}) 7. Qe2 (7. Ba4 Bd7 8. Bxc6 Bxc6 9. b3 Ne7 10. Ba3 Ng6 11. Bxf8 Kxf8 12. Qe2 Nf4 13. Qf1 Nd3+ {Cormier-Batista,IECC 2004,0-1}) 7... f6 8. Ba4 (8. exf6 {Cloud Engines} Nxf6 9. b3 cxb3 10. axb3 e5 11. h3 Be7 12. Na3 (12. Ba3 O-O 13. Bxe7 Qxe7 14. d3 Nh5 15. g3 Qf6 16. Nfd2 g6 { Sarwat-Wagdy, Cairo Masters 2012,1/2-1/2}) 12... O-O 13. Nb5 Qb8 14. d4 e4 { He-Kasaeva, Wld ch girls U14, Porto Carras 2018,0-1}) 8... Bd7 9. O-O (9. exf6 $15) 9... O-O-O (9... Nxe5 {wins a pawn because of the loose B} 10. Bxd7+ Kxd7 11. Re1 Nxf3+ 12. Qxf3 Bd6 $17 {Stockfish13}) 10. b3 (10. Bxc6 Bxc6 (10... Qxc6 11. d4 $11) 11. Na3 (11. exf6 Nxf6 12. d4 (12. Qxe6+ Bd7 13. Qe2 Re8 14. Qd1 Bd6 $19 {Stockfish13- Wh is woefully underdeveloped}) 12... cxd3 13. Qxe6+ Kb8 14. Qe5 Bd6 15. Qd4 Rhe8 $15 {Stockfish13})) 10... cxb3 $2 {misses gaining a pawn, & also opens up lines against his own K} (10... Nxe5 $17 {Stockfish13}) 11. axb3 $16 (11. Bxc6 $1 $18 {what else is there for the B where it is? This removes a key defender, and gains time for a later b5} Bxc6 12. axb3 Kb8 13. Na3 Ne7 14. b4 Nf5 15. d4 $18 {Wh's attack will be much faster than Bl's on the other side}) 11... Kb8 (11... Nxe5 {still Bl's best try, though far less effective now} 12. Bxd7+ Kxd7 13. Nxe5+ fxe5 14. Rxa7 Qb6 15. Ra1 Bd6 16. Na3 Ne7 17. d3 $16 {Bl has got his pieces out, but the Bl K position in the centre looks precarious}) 12. d4 $18 f5 (12... fxe5 {looks better- Bl 's K side urgently needs some development & open lines} 13. Bxc6 Bxc6 14. Nxe5 {though Wh has all the chances} Bd6 15. Nxc6+ Qxc6 16. c4 dxc4 17. bxc4 Ne7 18. Be3 $18 {Stockfish13- all 5 Wh pieces pile into the Q sidewith the Bl Rs being the usual sluggish defenders}) 13. Na3 (13. c4 $1) 13... h6 (13... a6 $5) 14. Nb5 Qc8 15. c4 (15. Ba3 $1 $18 {develops an unused piece, gets access to d6 for the N, and clears the files for the Rs}) 15... a6 16. Nc3 $18 {Do not retreat from a good position- the only way is forward- a Rudy maxim} (16. cxd5 axb5 17. Bxb5 Na7 (17... exd5 18. e6 {threat Bf4}) 18. Bd3 (18. Bxd7 Rxd7 19. d6) 18... b6 19. d6 $18 {Stockfish13}) (16. Bd2 axb5 17. cxb5 Nb4 18. Rfc1 Nc2 19. Qd1 b6 20. Rxc2 Qb7 21. Ne1 Rc8 22. Nd3 $18 {Stockfish13}) (16. Nd6 {Rudy} Bxd6 17. exd6 Nf6 18. Bd2 Rhg8 19. c5 $18 {Stockfish13, b5 is coming}) 16... Bb4 17. Bd2 (17. Na2 {lichess & Stockfish13} Be7 18. cxd5 exd5 19. Bd2 (19. e6 Be8 20. b4 { looks good as well}) 19... Be8 20. Rfc1 Qe6 21. b4 {Stockfish13- Bl's rather exposed K will not last long}) 17... Bxc3 18. Bxc3 Nge7 19. b4 $2 {gives Bl access to d5, as a marvellous blockading square , especially against the B now awkwardly on c3} (19. Bxc6 $18 {lichess analysis}) (19. Rfc1 $18 {Stockfish13}) 19... dxc4 $17 20. b5 Na7 21. bxa6 $6 (21. b6 {may be better} Nb5 22. Bb4 Nd5 23. Rfc1 c3 24. Bc5 Bc6 $17 {Stockfish13}) (21. Bb4 Nd5 22. Bd6+ Ka8 23. Rfc1 Bxb5 24. Bxb5 Nxb5 25. Rxc4 Qd7 26. Rc5 (26. Bc5 $17 {Stockfish13}) 26... Ndc3 27. Qb2 Rc8 $17 {lichess analysis}) 21... b5 {Bl's K is now sheltered by the advanced Wh pawn ( reminiscint of lines in the Cunningham var of the King's Gambit) . Wh's attack has run into the ground, so now Bl can take over on the other side} 22. Rfb1 Ka8 23. Bc2 g5 $19 (23... Nd5 $19) 24. Bb4 Nd5 25. Ba5 Rdg8 26. Rc1 Bc6 {it is now the Wh K facing 5 Bl pieces} (26... g4 {Stockfish13 }) 27. h3 $2 {moving pawns on the side where you are being attaked just gives the other side further targets- g4 was coming and this just gives it greater force} g4 28. hxg4 Rxg4 {Bl has gained a deadly open file thanks to h3} 29. Nh2 Rg7 (29... Nf4) (29... Rxg2+) 30. Ra3 Nf4 (30... Rxg2+) 31. Qd2 Rxg2+ 32. Kf1 Rxh2 (32... Nd5 33. Kxg2 c3 34. Rxc3 Ne3+ 35. Kh3 Qe8 36. Qe2 Nd5 37. Kg3 Rg8+ 38. Ng4 Nxc3 39. Bxc3 Rxg4+ $19 {Stockfish13}) 33. Qxf4 Rh1+ 34. Ke2 Rxc1 35. Qxc1 Qg8 (35... Bd5 {considered best by Stockfish13, for some obscure reason beyond me ( beginning to see why after exploring the lines that follow on from this one- it allows the N into the game, so that Bl can advance on the Q side, thus drawing Wh pieces out of line, then returning to the K side)}) (35... Qe8 {looks best to this commentator} 36. Rh3 Qg6 37. Qf4 Bd5 $19 {( probably why Stockfish13 went for this move in the first place}) (35... Qb8 36. Bb4 Bd5 37. Bd6 Qe8 38. Rh3 Nc6 39. Qa3 Qg6 40. Qg3 Qg4+ 41. Qxg4 fxg4 $19 {Stockfish13}) 36. Bd2 (36. Rg3 {holds longer} Qf7 37. Qg1 Bd5 38. Bb6 Rb8 $19) 36... Qg4+ 37. f3 Qg2+ 38. Ke1 Bxf3 39. Bxh6 Qe2# 0-1 [Event "Dyfed Online League"] [Site "Lichess"] [Date "2021.03.24"] [Round "8.4"] [White "Holman, Sam"] [Black "Griffiths, Gabriela"] [Result "1-0"] [ECO "B09"] [WhiteElo "1386"] [BlackElo "1000"] [Annotator "kemen"] [PlyCount "127"] [EventDate "2021.??.??"] [WhiteTeam "Aberystwyth"] [BlackTeam "U. C. Aberystwyth A"] {[%evp 0,127,32,30,66,71,70,75,90,24,42,51,23,41,29,29,39,13,13,-1,50,-6,14,21, 51,33,80,89,61,72,109,-35,55,59,46,68,115,122,254,248,249,120,118,86,134,125, 242,161,148,148,168,164,164,38,71,78,150,51,51,63,241,168,188,92,83,-47,58,-78, -40,-119,-124,-139,16,-5,56,65,65,0,0,-168,35,8,26,-1,13,16,68,-19,103,54,295, 177,574,536,1557,2008,29987,29988,29989,29990,29991,1394,1729,1002,1025,1026, 1402,1511,2041,1049,2194,1187,1951,28028,29981,29982,29983,29984,29985,29986, 29987,29988,29989,29990,29993,29994,29997,29998,29999,-30000]} 1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f4 (4. g3 Bg7 5. Bg2 O-O 6. Be3 Nbd7 7. h3 e5 8. Qd2 Re8 9. g4 {Holman-J Greenwood, Aberystwyth ch 2016,1/2-1/2}) 4... Bg7 5. Nf3 O-O (5... c5 {alternative}) 6. e5 dxe5 (6... Nfd7 7. h4 c5 8. h5 cxd4 9. Qxd4 Nc6 10. Qf2 dxe5 {Holman-Pinch, Dyfed Online Closed 2021. 1/2-1/2 after various complications}) 7. fxe5 {main} (7. dxe5 Qxd1+ 8. Kxd1 {scores 59 % for Wh- Bl has to be careful not to run out of space for the pieces}) 7... Nd5 8. Nxd5 { 41% for Wh, brings the Q is onto a good square} (8. Bc4 {58% for Wh}) 8... Qxd5 9. Be3 (9. c4 Qe4+ {32% for Wh}) 9... Bg4 10. Be2 Nc6 {main, though 3-1-1 results} (10... e6 11. h3 Bxf3 12. Bxf3 Qb5 13. Qc1 (13. a4 Qxb2 14. Rb1 Qa3 15. Qd3 $18 {Stockfish13} (15. Rb3 $18 {Stockfish13})) 13... c5 $11 { Narmontas-Zyliene, Plunge op Platieniai 2000,0-1}) (10... c5 $11 {Stockfish13}) 11. Qd2 (11. O-O {2.5-0.5}) 11... Qa5 (11... Rad8 $14 {Cloud Engines}) 12. c3 $16 (12. Qxa5 Nxa5 13. O-O-O $14 {Stockfish13}) 12... e6 13. h3 (13. a4 Qd5 14. h3 Bxf3 15. Bxf3 Qd7 16. O-O $16 {Stockfish13}) 13... Bxf3 14. Bxf3 Ne7 15. Bh6 (15. b4 Qa6 16. a4 Qc4 17. Bxb7 Rad8 18. Ra3 $16 {Stockfish13}) 15... c6 (15... Bxh6 16. Qxh6 c5 $11 {Stockfish13}) 16. Bxg7 Kxg7 17. h4 $16 a6 (17... h6 18. h5 g5) 18. h5 $18 {breaks up the K side now} h6 19. hxg6 Ng8 20. Be4 $6 (20. gxf7 {opens up the K further} Rxf7 21. Bh5 Re7 (21... Rff8 22. Qd3 Kh8 23. Bg4 Rae8 24. Qg6 $18) 22. O-O $18 {Stockfish13}) 20... fxg6 21. a3 (21. Qd3 Ne7 22. Qe3 (22. Qh3 h5 23. Qxe6 $18) 22... Rh8 23. Qh3 Nf5 24. g4 Ne7 25. O-O-O Raf8 26. Rdf1 Rxf1+ 27. Rxf1 Qd8 28. Rf6 $18 {Stockfish13}) 21... Rf7 22. O-O-O c5 23. Bc2 (23. d5 exd5 24. Qxd5 Qb6 25. e6 Rf6 26. Qd7+ Kh8 27. e7 Qe6 28. Bxb7 $18 {Stockfish13-Wh controls the centre}) 23... cxd4 24. Qd3 (24. Qxd4 { looks more natural- Wh is in pursuit of the Bl k but there is no need to have his own K exposed in the process}) 24... Qxe5 25. Qxg6+ Kf8 26. Rhe1 (26. Rxd4 {simplest} Qg5+ 27. Qxg5 hxg5 28. Re1 Re7 (28... Re8 29. Bg6) 29. Rg4 Rg7 30. Rxe6 $18) 26... Qf4+ 27. Kb1 Rf6 (27... dxc3) 28. Qh5 (28. Qd3) 28... dxc3 29. Qc5+ Kg7 (29... Ne7 {lichess} 30. Rd7 Re8 31. Qxc3 $18 {Stockfish13}) 30. Rd7+ (30. Re4 {brings another R in, Stockfish13} Qg5 31. Rd7+ Rf7 32. Qxc3+ Nf6 33. Rxf7+ Kxf7 34. Qc7+ Kf8 35. Qd6+ Kg7 36. Re5 (36. Rxe6)) 30... Rf7 31. g3 (31. Qxc3+ {simplest- the text is too trappy}) 31... Qf6 32. Red1 $2 (32. Rxf7+ { lichess analysis}) (32. Rd4 $1 $18 {Stockfish13} Kh8 33. Rf4 Qg7 34. Rxe6) 32... Raf8 $11 (32... cxb2 $11) 33. Qc4 cxb2 34. Qg4+ Kh8 35. Qe4 Qf5 $14 ( 35... Ne7 $11) 36. Qxb7 Qf2 37. Qxb2+ Qf6 38. Qb7 Ne7 39. Qxa6 Nf5 (39... Nd5) 40. Qb7 Kg7 41. Rf1 Rxd7 42. Qxd7+ Qe7 (42... Rf7 43. Qb5 Qc3 $11 {both Engines }) 43. Qd3 $11 (43. Qxe7+ $11 {insisted upon by lichess, but there is little difference to the text}) 43... Qb7+ 44. Ka2 Rb8 (44... Qc7 $11) 45. Qc3+ (45. Rb1 {forces off Rs, so makes it easier to get the a pawn through later - Wh's B is superior to the N & the Wh K is safer as well; also there are immeditate tactics to hand} Qc8 46. Rxb8 Qxb8 47. g4 Ne7 48. Qh7+ Kf8 49. Qxh6+ Kf7 50. g5 $18 {Stockfish13}) 45... Kg6 (45... Kf7 {is better, though} 46. g4 {is still winning; Bl was now down to 2 mins to Whs 28}) 46. g4 Rc8 {lichess does not like this because it leads to a forced mate, but there is not much that Bl can do here anyway} 47. gxf5+ exf5 48. Bxf5+ Kh5 49. Qh3+ Kg5 50. Bxc8 {a natural move to make, classified as a blunder by lichess since there is a forced mate} (50. Qg3+ Kf6 51. Bxc8+ Qf3 52. Rxf3+ Ke7 53. Qe5+ Kd8 54. Rf8#) 50... Qd5+ 51. Kb1 (51. Qb3 {and it appears to be a mate in 11}) 51... Qb5+ 52. Kc1 Qc5+ 53. Kd2 Qd5+ 54. Ke2 (54. Qd3) 54... Qb5+ 55. Kf2 (55. Qd3) 55... Qc5+ 56. Qe3+ Qxe3+ 57. Kxe3 h5 58. a4 (58. Kd4 {is an alternative- getting a Q is easier to work out} Kh4 59. Rh1+ Kg5 60. Ke5 Kg6 61. Rg1+ Kh6 62. Kf6 h4 63. Rh1 Kh7 64. Be6 Kh6 65. Rxh4#) 58... h4 59. a5 h3 60. a6 Kh4 61. a7 Kg3 62. a8=Q h2 63. Qf3+ Kh4 64. Qg4# 1-0

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