[Event "Dyfed League: Steynton A - Cardigan B"] [Site "?"] [Date "2019.11.19"] [Round "?"] [White "Leah, H.."] [Black "Pinch, David"] [Result "1/2-1/2"] [ECO "C44"] [WhiteElo "1570"] [BlackElo "1771"] [Annotator "kemen"] [PlyCount "86"] [EventDate "2019.??.??"] {[%evp 0,86,5,-1,56,36,31,-20,-29,-32,-37,-22,-17,-78,-33,-61,-34,-80,-45,-27, -23,-81,-41,-44,-42,-41,-33,-50,5,-5,12,-9,-6,-13,-3,28,17,17,14,28,36,4,16, -68,-67,-86,-110,-172,-167,-194,-223,-166,-138,-163,-62,-101,-89,-108,-98,-98, -98,-98,-98,-98,-90,-98,-42,-106,-63,-41,-23,-23,28,18,50,56,54,56,291,0,0,0,0, 0,53,-11,0,-22,15]} 1. e4 e5 2. Nf3 Nf6 3. d3 Nc6 4. c3 d5 5. Nbd2 Be7 (5... a5 {main_R} 6. Be2 Bc5 7. O-O O-O) 6. g3 {Opting for a King's Indian Attack against Bl's initial offer of a Petroff.Other notes by David _R} (6. Be2 { Leads to a Reveresed Philidor}) 6... Bg4 {a bit committal, in some lines Bl will be required to exchange the B for the N_R.} (6... O-O {main, when Bl can play} 7. Bg2 dxe4 8. dxe4 Qd3) 7. Bg2 Qd7 {Houdini scores it level.} (7... dxe4 {[Houdini B0.41].} 8. dxe4 Qd3 9. h3 Bh5 10. Bf1 Qd7 11. g4 Bg6 12. Qa4 O-O-O 13. Bb5 Nxe4 14. Nxe4 Bxe4 15. Nxe5 Qd1+ 16. Qxd1 Rxd1+ 17. Kxd1) 8. Qa4 { Disliked by Houdini but it gives black some problems.} (8. O-O O-O 9. Re1 { main;5 Wh wins, 3 Bl wins _R}) 8... a6 {To allow b5 when appropriate, both to drive away the queen and to prevent Nc4.} (8... O-O-O 9. O-O Kb8 { Komodo13_R}) (8... O-O 9. O-O Rad8 {Komodo13 _R}) 9. exd5 Qxd5 {The f6 knight is overloaded. There is no harm that the discovery can do.} (9... Nxd5 $17 {is no problem, as the Q guards the B, & it gives Bl an edge since the d3 pawn can get lost_R}) 10. Nh4 {The N does little here, & will need to return at some point _R} (10. O-O Qd7 11. Re1 O-O 12. Qc2 Bd6 {both sides have lost time with their Q moves _R}) 10... Qd7 {The alternative was Qb5.} 11. O-O {Giving up the bishop is too high a price just to double black's pawn.} b5 12. Qc2 O-O {[Houdini B0.10] Still level.} 13. Re1 Bd6 {White needs the d4 break, to free his pieces and to prevent the pawn from becoming a target, hence black's attempt to prevent it. However, the text is overly cautious. black's pieces are well placed so Rfe8, followed by Bc5 was more active.} 14. Nb3 (14. Ne4 Nxe4 15. dxe4 g6 {Komodo13_R}) 14... Rad8 {Breaking the pin on the c6 knight.[& walking into another _R]} (14... h6 15. Be3 Rfe8 16. a4 Rad8 { Komodo13_R}) 15. Bg5 {Komodo13 gives this a definite plus for Wh , as Bl's K side gets exposed_R} Rfe8 16. d4 (16. Bxf6 {just increasing the pressure looks good ( the f5 square is a possible invasion point)- Bl also retains problems with his N on c6} gxf6 17. Qd2 Bf8 18. Qe3 Qe6 19. d4 Ne7 20. dxe5 Qxe5 (20... fxe5 21. Qg5+ Ng6 22. Nd4 {& a N comes to f5}) 21. Qxe5 fxe5 22. Rxe5 Ng6 23. Rxe8 Rxe8 24. Bf3 Bc8 25. Nxg6 hxg6 26. Kg2 c5 27. Rd1 { Komodo13 nudged; as Wh is a sound pawn up_R}) 16... exd4 17. Bxf6 gxf6 18. cxd4 $14 {Komodo13_R} Nb4 {Planning to get the knight to d5.} 19. Qd2 Be6 (19... Bf8 {fighting for control over the square in front of the isolated pawn} 20. Be4 Be6 21. Rad1 Nxa2 (21... Nd5 22. Nc5 Qc8 23. Qc2 {Komodo13}) 22. Nc5 Qxd4 23. Qxd4 Rxd4 24. Rxd4 Bxc5 25. Rdd1 Nb4 26. Rd2 Bd6 {Bl has 2 pawns for an exchange, though the f5 square is still a weak point} 27. Rc1 Bc4 28. Bf5 Re5 29. Bh3 Be6 30. Bg2 Kg7 {Komodo13 _R}) 20. d5 {Threatening to embarrass the knight by a3.} (20. Na5 {threatens a nasty invasion on the Q side, luring Bl pieces away from the defence of their K} Bd5 21. a3 Bxg2 22. Kxg2 Nd5 23. Qd3 Bf8 24. Rxe8 Rxe8 25. Qf3 Ne7 26. Rd1 Qd5 27. Qxd5 Nxd5 28. Nf5 Re2 29. b4 {Komodo13-Bl will suffer in the endgame with his B badly restricted by that f6 pawn _R}) 20... Bf8 {= as well; Komodo13} (20... Bxd5 { [Houdini level].} 21. Bxd5 Rxe1+ 22. Rxe1 Bf8) 21. Qf4 {[Houdini B0.85 best dxe6 level].} (21. dxe6 {[Houdini level].} Qxd2 22. exf7+ Kxf7 23. Nxd2 Rxd2 { [Houdini level].}) 21... Nxd5 {This sequence chosen by Wh leads to a definite edge for Bl as in David's next 2 notes-R} 22. Bxd5 {Giving up the bishop to regain a doubled-pawn?.[but the Q has no good alternative squares _R]} Qxd5 { [Houdini B0.83 best Bxd5 B1.24].} 23. Qxf6 (23. Qxc7 Bh3 24. Qc3 f5 { Komodo13-R}) 23... Bg7 {[%eval 0,0] Komodo13 judges this position winning for} 24. Qf4 {[Houdini B2.01] Black has the two bishop's, a queen side majority and an open position.} c5 (24... Bxb2 {simplest} 25. Rab1 (25. Rad1 Bh3 26. Rxe8+ Rxe8 27. Qf3 Qe6 28. Qe3 Qxe3 29. fxe3 Rxe3) 25... Bh3 26. Qxc7 Rxe1+ 27. Rxe1 b4 {Komodo13- tBl has a n extra pawn on the Q side, & backrank threats, while the Wh Ns look on helplessly _R}) 25. Re2 Bc8 {[Houdini B1. 90 best c4 B3.49] Black tries to get the bishop on to the long diagonal, with mating threats, but this is too slow.} (25... c4 {[Houdini B3.76].} 26. Nd2 c3 27. bxc3 Bxc3 28. Rd1 {Black's pressure mounts.} Bh3 29. Rxe8+ Rxe8 30. Qf3 Qxd2 {is Komodo13's continuation, simply winning}) (25... Bh3 26. Rd2 Qh5 27. Rxd8 Rxd8 28. Re1 Rd1 29. Qe3 Rxe1+ 30. Qxe1 Bxb2 31. Nd2 c4 {Komodo13, also looks comfortable for Bl to win}) 26. Rd2 Qe5 {Black should have a good endgame without queens but there is more in the position for black with the queens on.} (26... Qc6 {follows up the plan of the last move}) (26... Qh5 $19 {though here the B is best on h3, posing severe backrank problems for Wh as in previous note-R}) 27. Qxe5 Bxe5 28. Rxd8 Rxd8 29. Nxc5 {Swapping the c5 pawn for b2 is not a good deal for black. The b2 pawn may well have fallen for free.} Bxb2 {Bl should still be winning according to Komodo13, but not as clearly as before_R} 30. Re1 Bc3 (30... Bd4 31. Ne4 Be6 32. Re2 b4 { Komodo13- the Bs & R push a pawn through, while the Wh N on h4 remains a bystander}) 31. Rc1 Bb4 32. Nb3 a5 {[Houdini B0.58 best Be6 B1.01] This weakens both pawns. The piece position should be improved before the pawns are pushed.} 33. Nf3 {Gaining d4 as a perch for the knight.} Bg4 {[Houdini B0. 43 best Bb7 B1.94].} (33... Bb7 {Komodo13_R}) 34. Nbd4 Be7 {Not good, being in range of Nc6.} (34... Rd5 {Komodo13 _R}) 35. Kg2 b4 36. Nc6 { [Houdini W0.52] black's poor play has let white back into the game.} Re8 37. Nxe7+ Rxe7 38. Rc5 Ra7 {Passive. Rooks should attack, not defend.[ True- but quite frequently, as here, placing the R behind a pawn that is moving forward can be the best plan. Nonetheless, here it is an outright blunder that should lose the game _R} (38... Bd7 39. Rxa5 Bc6) 39. Nd4 (39. Rg5+) 39... Bd7 {[Houdini level].} 40. Nc6 Bxc6+ 41. Rxc6 {Black has squandered his possession of the two bishops.} Kf8 (41... a4 {is still an attempt to win, though Wh can hold with accurate play} 42. Kf3 (42. Rc4 Rb7 (42... b3 43. axb3 a3 44. Rc1 a2 45. Ra1 Ra3 46. Kf1 Rxb3 47. Rxa2) 43. Kf3 b3 44. axb3 axb3 45. Rc1 b2 46. Rb1 Kg7 {is more or less the same; though Bl players can keep playing in this position in the hope of a slight inaccuracy on Wh's part; allowing the Bl K into the wh pawn mass ( Bl will not lose as long as Rs stay on, even though Wh may pick up the advanced Bl pawn_R}) (42. Rb6 b3 43. a3 Rc7 44. Rb4 Rc1 45. Kf3 (45. Rxa4 b2) 45... Ra1 46. Ke3 Rxa3) 42... Rb7 43. Ra6 b3 44. axb3 axb3 45. Ra1 Kf8 46. Ke3 Ke7 47. Kd4 b2 48. Rb1 Ke6 49. f3 Rb8 50. Kc3 Ke5 51. Rxb2 Rxb2 52. Kxb2 Kd4 53. Kc2 Ke3 54. f4 Kf3 55. Kd3 h5 (55... Kg2 56. Ke4 Kxh2 57. g4) 56. f5 f6 57. Kd4 Kg2 58. Kd5 (58. Ke3 Kxh2 59. Kf2 Kh1 60. Kf1 Kh2 61. Kf2) 58... Kxh2 59. Ke6 Kxg3 60. Kxf6 h4 61. Kg6 h3 62. f6 h2 63. f7 h1=Q 64. f8=Q {_R}) 42. Kf3 Ke7 43. Ke4 Kd7 {Despite black's last being poor, Houdini still scores it level. Black offered the draw and white accepted. White was short of time.} 1/2-1/2 [Event "Dyfed League: Steynton A - Cardigan B"] [Site "?"] [Date "2019.11.19"] [Round "?"] [White "Jones, Martin C"] [Black "Brewer, Ben"] [Result "1-0"] [ECO "C54"] [WhiteElo "1746"] [BlackElo "1573"] [Annotator "kemen"] [PlyCount "77"] [EventDate "2019.??.??"] {[%evp 0,77,49,46,39,8,86,8,25,1,16,7,-9,-14,-9,-37,-3,-6,21,17,33,-29,52,36, 74,53,78,105,106,104,91,94,94,82,86,70,82,32,19,26,25,28,28,-47,8,-4,7,-29,65, -31,-31,-31,-41,-34,-33,-89,-35,-49,-34,-53,-43,-44,-24,-64,68,-65,168,172,197, 197,325,353,1273,361,29993,29992,29993,29994,29995,29996]} 1. e4 e5 2. Bc4 Bc5 3. Nf3 Nc6 4. d3 Nf6 5. c3 Bb6 6. O-O O-O 7. Re1 (7. Nbd2) (7. Bg5) 7... d6 8. Nbd2 Bg4 {this can be a risky manoevre as Wh can gain time on the B- either gaining f5 for a N, or launching a pawn strorm against the K} (8... Ne7) (8... h6 {main}) 9. b4 (9. h3 Bh5 (9... Bxf3 10. Qxf3 {is fine for Wh}) 10. Nf1 (10. g4 Bg6 11. Nf1 d5 12. exd5 Nxd5 13. Ng3 f6 14. Nh4 Bf7 15. Nhf5 { Horeczky-Dolnik, HUN ch tm 2007,1-0}) 10... Na5 11. Bb5 d5 (11... Nd7 12. Ng3 Bg6 13. d4 {Kindermann-Wittwer, EU ch tm 1982,1-0}) 12. Ng3 dxe4 13. Nxh5 exf3 14. Bg5 Qd6 15. Bxf6 gxf6 16. Qxf3 Kh8 17. Nxf6 a6 18. Qf5 Kg7 19. Qg5+ { Pokorna-Castiglione,SVK ch tm 2003,1-0}) (9. Nf1 h6 10. h3 Bh5 11. g4 Bg6 12. Ng3 h5 13. Nh4 Nxg4 14. Nxg6 Nxf2 15. Qxh5 Nxe4+ 16. Kg2 Nf6 17. Qh8# { Hearthstones9-Unleashed3, Playchess.com 2013,1-0}) 9... Qd7 10. Bb3 (10. Nf1 {main, 5 Wh wins, 1 draw, 1 Bl win}) (10. h3 {5 Wh wins} Bxh3 11. gxh3 Qxh3 12. Nf1 Qg4+ 13. Kh1 Qh3+ 14. N3h2 Bxf2 15. Re2 Ng4 16. Rb2 h5 17. Qf3 { Medvegy-Kabisch, BL Sued 2003,1-0}) 10... Kh8 (10... a5 {Cloud Engines}) 11. Nc4 (11. Nf1) 11... Rae8 12. a4 (12. Bg5 {Komodo13}) 12... Bxf3 { this should wait until Wh has gone h3} 13. Qxf3 Ng4 14. Nxb6 (14. Ra2 { Stockfish10 considers this position winning for Wh} a6 15. Nxb6 cxb6 16. Bg5 Ne7 17. h3 f6 18. Bc1 Nh6 19. Bxh6 gxh6 20. Qe3 (20. Qh5)) 14... axb6 15. h3 (15. Bg5 {Stockfish10}) (15. Qh3 {Komodo13}) 15... Nf6 16. Bg5 Ng8 17. Bd5 (17. Qg4 f5 18. exf5 Qxf5 19. Qxf5 Rxf5 20. Bd2 {Stockfish10}) 17... f5 (17... f6 18. Bd2 Nge7 19. Bb3 {Stockfish10}) 18. Bd2 (18. exf5 Qxf5 19. Qxf5 Rxf5 20. Bxc6 bxc6 21. Be3 Ra8 22. a5 bxa5 23. Rxa5 Rff8 24. Bd2 { Stockfish10}) 18... fxe4 19. Qxe4 Nf6 20. Bxc6 bxc6 21. Qh4 (21. Qe2) 21... Ra8 (21... Qf5 22. Qc4 Ne4 23. Qxe4 Qxf2+ 24. Kh1 Qxd2 25. Qxc6 g5 { Stockfish10}) 22. a5 Qf5 23. Qg3 (23. Qc4) 23... e4 (23... Nh5 24. Qe3 Nf4 25. axb6 Rxa1 26. Rxa1 cxb6 27. Qxb6 Ne2+ 28. Kh2 Qxd3 29. Be1 Qd5 30. Qe3 Nf4 $11 {Stockfish10}) (23... c5 {Stockfish10}) 24. d4 (24. axb6 Rxa1 25. Rxa1 cxb6 26. Qxd6 Ne8 27. Qd4 exd3 28. Qxb6 {Stockfish10}) 24... bxa5 25. bxa5 Rxa5 26. c4 Raa8 (26... Rxa1 27. Rxa1 c5 28. Ra5 Qh5 29. Qe3 cxd4 30. Qxd4 Qd1+ 31. Kh2 h6 32. c5 d5 33. Ra7 Rf7 34. Be3 Qxd4 35. Bxd4 Kh7 { Stockfish10}) 27. Rab1 (27. c5 Qd5) 27... Rfb8 (27... h6) 28. Rxb8+ Rxb8 29. c5 Qd5 30. Be3 h6 31. Ra1 Qf7 (31... Kh7 32. Ra7 Nh5 33. Qg4 dxc5 34. dxc5 Qe5 35. Qd1 Nf4 36. Bxf4 Qxf4 37. Qc2 Rb4 38. Ra4 Rxa4 39. Qxa4 Qc1+ 40. Kh2 Qxc5 41. Qxe4+ g6 42. f3 {Stockfish10- though in practical play Bl must have winnning chances with outside passsed pawn- Wh must rely on being able to give a perpetual if the Bl Q goes too far forward.}) 32. Ra7 (32. cxd6 cxd6 33. Qxd6) 32... Nd5 (32... Qd7) (32... Qe7) 33. cxd6 Rb1+ {not all checks are useful- here Bl needs to be alert to dangers on his own backrank} (33... Rc8 34. Qg4 Qf8 35. dxc7 Rxc7 36. Rxc7 Nxc7 37. Qxe4) 34. Kh2 Nxe3 (34... Rb8 35. Bd2 Rc8 36. Ba5 {Stockfish10}) 35. Qxe3 (35. Ra8+ {one need not always play the obvious recapture- Topalov} Kh7 36. Qxe3 {Stockfish10; and Bl has holes everywhere in his defences} cxd6 (36... g6 37. Qxe4 Rb7 38. Qe5 g5 39. d7 Qxd7 40. Rh8+ Kg6 41. Rg8+ Kh5 42. Qe2+ g4 43. hxg4+ Kh4 44. g3#) 37. Qxe4+ Qg6 38. Rh8+ {Stockfish10}) 35... Qe6 (35... Rb8 36. Qxe4) 36. dxc7 (36. Ra8+ Kh7 37. dxc7) 36... Qxh3+ 37. Kxh3 Rh1+ 38. Kg3 Rh3+ 39. Kxh3 1-0 [Event "Dyfed League: Steynton A - Cardigan B"] [Site "?"] [Date "2019.11.19"] [Round "?"] [White "Brewer, Joshua"] [Black "Paffard, Mark"] [Result "0-1"] [ECO "E20"] [WhiteElo "1448"] [BlackElo "1652"] [Annotator "kemen"] [PlyCount "74"] [EventDate "2019.??.??"] {[%evp 0,74,19,31,25,-11,-9,4,20,20,20,21,21,17,27,-4,8,2,3,0,-3,5,5,-14,-13, -7,-10,-7,-8,-43,-72,-132,-156,-284,-272,-189,-171,-290,-312,-311,-285,-384, -279,-285,-198,-269,-225,-226,-213,-207,-206,-306,-305,-305,-339,-348,-293, -356,-344,-482,-479,-508,-535,-561,-575,-609,-641,-629,-573,-733,-844,-864, -872,-1301,-1592,-1543,-1971]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Bd2 {a stolid response} (4. e3) (4. Qc2) (4. Nf3 {main lines}) 4... O-O 5. a3 Bxc3 6. Bxc3 Ne4 {30 % for Wh} (6... d5 {blocking the B , 36% for Wh}) 7. Qc2 Nxc3 (7... f5 {main}) 8. Qxc3 b6 {28% for Wh} 9. e3 Bb7 10. Nf3 d6 11. Bd3 (11. Be2 {main}) 11... Nd7 12. O-O-O {a little risky, as long castling exposes the K more than short-castled K, especially on opposite sides. It should however be Ok.} (12. Qc2 h6 13. e4 c5 14. O-O cxd4 15. Nxd4 Qf6 16. Nb5 Qe7 17. Rfd1 Rfd8 18. Rac1 Ne5 {Zamora-Condori Aranya, Arequipa Majores 2002,0-1}) 12... Rc8 { maybe the R is needed elsewhere?} (12... c5) 13. h4 c5 14. Ng5 (14. Kb1 { looks desirable}) 14... h6 15. Nh7 (15. Bh7+ {is a better continuation of the adventure} Kh8 16. d5 (16. Bc2 cxd4 17. Rxd4 Qe7 18. Kb1 Bxg2 19. Rg1 Bc6 { Komodo13}) 16... Nf6 17. Bb1 exd5 18. cxd5 Qe7 19. Qc2 Rfe8 20. g4 c4 21. Rd4 c3 22. bxc3 g6 23. Ne4 Bxd5 24. Nxf6 Qxf6 25. g5 Qe5 26. Rg1 Rc5 27. Rg3 Rec8 28. f4 Qg7 29. Kb2 Be6 {Komodo13}) 15... Re8 {the N lacks reinforcements & will be lost} 16. h5 f5 (16... cxd4 17. exd4 f5 {Komodo13} ) 17. d5 Ne5 18. Bc2 (18. dxe6 Nxd3+ 19. Qxd3 Kxh7 20. Qxf5+ Kh8) 18... Kxh7 19. f4 Ng4 20. Rd2 {Wh has no compensation for the piece} (20. dxe6) 20... Qf6 21. Qxf6 (21. Qd3 b5 {when the Wh K position gets opened up}) 21... gxf6 (21... Nxf6) 22. dxe6 Be4 (22... Nxe3) 23. Bxe4 fxe4 24. Rxd6 Re7 (24... Rcd8 25. Rd5 Rxd5 26. cxd5 Nxe3 27. Re1 Nxd5 28. Rxe4 f5 29. Re5 Ne7 {and the Wh pawns drop off}) 25. Rd7 Rxd7 26. exd7 Rd8 27. Rd1 Kg7 (27... f5) 28. f5 Kf7 29. Rd6 Nxe3 30. b3 Nxf5 31. Rd5 Ke6 32. b4 cxb4 (32... Rxd7) 33. axb4 Rxd7 ( 33... Ne3) 34. g4 Ne3 (34... Rxd5 35. cxd5+ Kxd5 36. gxf5 {and Bl has several ways of winning the K & P ending}) 35. Rxd7 Kxd7 36. c5 bxc5 37. bxc5 Nxg4 0-1 [Event "Dyfed League: Steynton A - Cardigan B"] [Site "?"] [Date "2019.11.19"] [Round "?"] [White "Hammett, S.."] [Black "Osinga, Awne"] [Result "1-0"] [ECO "D00"] [WhiteElo "1610"] [BlackElo "1308"] [Annotator "kemen"] [PlyCount "111"] [EventDate "2019.??.??"] {[%evp 0,111,24,25,25,-16,-16,-18,-40,25,8,-109,-54,-54,-22,-39,-38,-35,-25, -20,-20,-20,-32,-44,-7,-44,-34,-77,-34,-109,-89,-85,-92,-84,-85,-105,-45,-50, -38,-72,-47,-47,-47,-52,-47,-76,-63,-56,-39,-49,-68,-79,-79,-79,-84,-113,-49, -49,-49,-48,-65,-60,-69,-78,25,22,31,11,70,78,78,78,85,26,15,0,2,0,0,0,72,20, 250,162,266,245,289,271,331,297,294,294,294,273,294,262,267,232,225,0,0,0,0,0, 86,0,548,550,848,850,859,1010,1866,2102]} 1. d4 d5 2. e4 {Blackmar-Diemer Gambit} dxe4 3. Nc3 Nf6 4. f3 exf3 5. Qxf3 (5. Nxf3 {main}) 5... e6 (5... Qxd4 6. Be3 Qb4 7. O-O-O Bg4 8. Nb5 {as played in Diemer-Halosar Baden-Baden 1934,1-0}) (5... c6 6. Bd3) 6. Be3 (6. Bd3) 6... Be7 (6... Bb4 { main, though the text considered preferable for Bl in the theory books}) 7. O-O-O (7. Bd3 O-O 8. Nge2 Nbd7 9. O-O {alternative line for Wh , as in Harper-Jarrell, Columbus Ohio 1989,1-0}) 7... O-O (7... c6 {seems to be the only move played here in mainsteam databases.3 Wh wins,1 draw, 2 Bl wins. A further search found a number of internet blitz games; there may well be more on other sites, as it's a perfectly natural move for Bl to play; and is indeed the choice of Komodo13.}) 8. Bd3 (8. h4 {3-1 in blitz games}) 8... Nbd7 (8... c6 {2-4 in blitz games, though Komodo13 then gives} 9. Kb1) (8... Nd5 9. Bd2 (9. Nxd5 Qxd5 10. c4 Qxf3 11. Nxf3 {Komodo13}) 9... Bg5 10. Nge2 Nc6 11. Kb1 a6 12. g4 b5 13. h4 Bxh4 14. Rxh4 (14. Bxh7+) 14... Qxh4 15. Rh1 Qf6 16. Bxh7+ Kh8 17. Bg6+ Kg8 18. Rh8+ Kxh8 19. Qh3+ {Gedult-Morfids, Paris 1973, 1-0}) 9. Nge2 Nb6 10. Rhf1 Nbd5 11. Bd2 (11. Nxd5 Nxd5 (11... Qxd5 12. Qh3 e5 13. Qh4 h6 14. Nc3 Qd6 15. dxe5 Qxe5 16. Bd4 Qg5+ 17. Qxg5 hxg5 18. Nb5 { Komodo13}) 12. Bd2 b5 {Komodo13}) 11... a6 (11... Nb4 12. Bf4 Bd7 { Komodo13}) (11... Nxc3 12. Nxc3 Qxd4 13. Bf4 Qc5 14. Kb1 a6 15. g4 { Komodo13}) 12. g4 (12. Kb1) 12... Nxc3 13. Bxc3 (13. Nxc3 Qxd4 14. Bf4 { as in earlier note}) 13... Qd5 14. Qxd5 Nxd5 15. Bd2 Nb4 {without Qs , the Wh attack is gone} 16. Bxb4 Bxb4 17. h3 b5 18. Be4 Ra7 (18... Rb8 {looks a little stronger}) 19. g5 Bb7 20. Bxb7 Rxb7 21. h4 Be7 (21... Bd6) 22. Nf4 c5 ( 22... Rd8) 23. d5 exd5 24. Rxd5 (24. Nxd5 Re8 25. Nxe7+ Rbxe7 26. Rd6 Re6 27. Rd7 Rf8 28. Rf4 {Komodo13}) 24... Rd8 25. Rxd8+ Bxd8 26. Rd1 Rb8 27. Nd5 f6 {creates a slight weakness for Bl's pawn majority} (27... h6 28. gxh6 g6 29. Rf1 Bxh4 30. Nf6+ Bxf6 31. Rxf6 Ra8 32. c4 Ra7 33. Rc6 Kh7 34. Rxc5 bxc4 35. Rxc4 Kxh6 {Komodo13- has engineered a position where Bl has 2 connected passed pawns & Bl has all the practical chances of winning}) 28. gxf6 gxf6 29. h5 f5 (29... Kf7 {bringing the K up is standard play in endings, but Wh can save himself by tactics} 30. Nc7 Be7 (30... Bxc7 31. Rd7+ Ke6 32. Rxc7 Kf5 33. Rxh7 Kg5 34. h6 f5 35. Rf7 Rh8 36. h7 Kg6 37. Ra7 Rxh7 38. Rxa6+ Kg5 39. Ra5 Rd7 40. Rxb5 f4 41. Rxc5+ Kg4 42. b4 f3 43. Rc8 f2 44. Rg8+ Kf3 45. Rf8+ Kg2 46. Rg8+ Kf1 47. Rf8 Rd4 48. c3 Re4 49. Kd2 Re2+ 50. Kd3 Rxa2 51. b5 { Lomonosov tablebases}) 31. Nxa6 (31. Rd7 Rd8 32. Rxd8 Bxd8 33. Nxa6 c4 34. Kd2 $11) 31... Rb7) 30. Rf1 Bg5+ {Draw?} 31. Kd1 {objectively Wh should accept the offer, still being a pawn down} Rd8 {but this immediately returns the pawn as Bl is not winning the N} (31... Rf8 32. Nc7 Be7 33. Nxa6 Bd6 {cutting off the N from circulation} (33... Rc8 34. Ke2 Rc6 35. Nb8 Re6+ 36. Kf3 Kf7 {as the B is superior to the N}) 34. c3 Ra8 35. Nxc5 Bxc5 36. Rxf5 Be7 37. Rxb5 Rxa2 {however there are great technical diificulties here as the B is the wrong colour to help its remaining pawn, so Bl must resist swapping Rs. In the meantime Wh two connected passed pawns offer some compensation for the piece, though Bl should certainly not be losing, as those two pawns can always be stopped by giving up the B.}) 32. Rxf5 Bh4 (32... Bh6) (32... h6) 33. c3 Re8 (33... Rd6) 34. Nf6+ (34. Nc7 {Komodo13} Re1+ 35. Kd2 Rg1 36. Rxc5 Rg2+ 37. Kc1 Rg1+ 38. Kc2 Rg2+ 39. Kb3 Bg5 40. a4 Bc1 41. axb5 Rxb2+ 42. Kc4 axb5+ 43. Nxb5 {the c pawn will force the win of the B( the Bl K is too far away and needs to guard his h pawn), but, if Wh's h pawn falls ( probably by the Bl K coming to h6), the the R & N vs R ending will be drawn}) 34... Bxf6 35. Rxf6 Re5 (35... a5 36. Rf5 Rc8 37. Kd2 {Wh gets winning chances by advancing his more active K} a4 38. b3 axb3 39. axb3 Rd8+ 40. Kc1 Rc8 41. c4 b4 42. Kd2 Kg7 43. Kd3 Rd8+ 44. Rd5 Rf8 45. Ke4 Rf1 46. Rxc5 Rb1 47. Rg5+ Kh6 48. Rg3 Kxh5 49. Kd5) 36. Rxa6 (36. h6 {ties the Bl K down} a5 37. Ra6 a4 38. c4 bxc4 39. Rxa4 c3 40. b3 Rh5 41. Ra8+ Kf7 42. Ra7+ Kg8 43. Rg7+ Kh8 44. Rg2 Rxh6 45. Kc2 Ra6 46. Kxc3 h5 47. Kc4 Ra5 48. Rg5 Rxa2 49. Rxh5+ Kg7 50. Rxc5 Kf6 51. Rd5 {cutting off the Bl K} (51. b4 {is the quickest -Nalimov}) (51. Rc6+) (51. Kb5 {also win comfortably})) 36... Rxh5 37. a4 (37. Ra5 {looks as though gives more winning chances, though Bl holds with accurate play} b4 (37... Rg5 38. Rxb5 h5 39. b4 h4 (39... Rg1+ 40. Kc2 cxb4 41. cxb4 h4 42. Rh5 { Lomonosov tablebases} (42. Re5 {Lomonosov})) 40. Ke2 h3 41. Rb8+ Kg7 42. Rb7+ Kg6 43. Rb6+ Kh5 44. Rb8 cxb4 45. cxb4 Kg4 46. Rh8 (46. Kf1)) 38. cxb4 Rh1+ 39. Kc2 cxb4 40. Kb3 Rh4 {Komodo13}) 37... Rh1+ (37... bxa4 38. Rxa4 Rh2 39. Kc1 Kf7) 38. Kc2 Rh2+ (38... bxa4 39. Rxa4 Kf7) 39. Kb3 c4+ (39... bxa4+ 40. Rxa4 Kf7 41. Rc4 Rh5 (41... h5 42. Rxc5 h4 {also draws, as the single pawn travels fast})) 40. Ka2 (40. Ka3 bxa4 41. Rxa4 Rh4 42. b3 Kf7 43. b4 (43. Rxc4 Rxc4 44. bxc4 h5) (43. bxc4 Rh1) 43... Rh3 $11) 40... Rh5 {allows a fatal pin} (40... bxa4 41. Rxa4 Rh4) 41. Ra5 $18 Rf5 (41... Kf7 42. axb5 (42. Rxb5 Rxb5 43. axb5 Ke6) 42... Ke6 43. Ka3 Rh2 44. b3 cxb3 45. Kxb3 {now the wh pawns are more advanced & Wh wins with almost any move , except by offering a R swap}) 42. Rxb5 Rf6 43. Rc5 Rf4 44. Ka3 (44. a5) 44... Kf7 45. a5 Kg6 46. a6 h5 47. a7 Rf8 48. Ka4 (48. Ra5 Ra8 49. Kb4 h4 50. Kb5 h3 51. Kb6 h2 52. Ra1) 48... Ra8 49. Rc7 {but this should be insufficient to win} (49. Ra5) 49... h4 50. Rc6+ Kg5 51. Rc7 h3 ( 51... Kg6 {cuts off the R from going behind the pawn} 52. Kb5 h3 53. Rc6+ Kg5 54. Ra6 (54. Rc5+ Kg6 {repeats} (54... Kh4 55. Rxc4+ Kg5 (55... Kg3 56. Rc7) 56. Rc7 Kg6 {etc})) 54... h2 55. Ra1 Rxa7 56. Rh1 Rb7+ 57. Kxc4 Rxb2 $11) 52. Kb5 (52. Rh7) 52... Kg4 (52... Kg6 {draws, as above}) 53. Rh7 Kg3 54. Kb6 h2 55. Kb7 Kg2 56. Kxa8 1-0