Bertagnolli, Alexander - Mack, Wolfgang
Oberlg. Biberach-SC Böblingen2 1.Br., 09/26/2010
Round 1

1.b3 c5 2.Lb2 Sf6 3.e3 Sc6 4.f4 d6 5.Sf3 Dc7 6.Le2
[6.Lb5 Ld7 7.O-O a6 8.Le2 e5 9.fxe5 dxe5 10.d4?
(10.d3)
10...Ld6
(10...Sg4!)
11.d5 Se7 12.e4 Sxe4 13.Ld3 Sf6 0-1 Hrnciar,R (2095)-Csolto,T (2141) /Slovakia 2006/EXT 2009]
6...g6 7.Sc3 Lg7 8.Sd5 Dd8 9.Sxf6+ exf6
[9...Lxf6!?]
10.Lb5 O-O 11.Lxc6 bxc6 12.O-O Te8 13.Te1 f5
[13...d5!?]
14.Lxg7 Kxg7 15.c4 a5! 16.d4 Db6 17.dxc5 dxc5
[17...Dxc5!? dürfte zumindest gleichwertig sein:
 Z.B.: 18.Dd4+ Dxd4 19.Sxd4 Ta6 (/\ a4)]
18.Dc2 a4 19.Tad1 axb3 20.axb3 Le6 21.Td3 Kg8?! überlässt die Diagonale a1/h8 dem Gegner.
[21...f6!? 22.Ted1 Dc7 23.Dd2
(23.Td6? Ld5! 24.Txf6 Lxf3 25.Db2 Ta2 26.Txc6+ Txb2 27.Txc7+ Kh6 28.gxf3 Txe3 29.Txc5 Txf3 30.Tcd5 (30.Td7 Txf4 31.Tcc7 Tff2 32.Txh7+ Kg5) 30...Tfxb3 (30...Txf4))
23...Ta7]
22.Ted1
[22.Dc3!]
22...Ta3?
[22...f6! 23.Td6 Kf7 24.h3 Ta3 25.T1d3 /+/=]
23.Db2 Taa8 24.Df6! Dc7 25.Se5 (/\ Td7!) 25...De7 26.Dxe7 Txe7 27.Td8+ Te8 28.Txe8+ Txe8 29.Sd3! Td8 30.Kf2 Kf8 31.Ke2 Ta8! 32.Sxc5 Ke7 33.Kd3! Kd6 34.Sxe6 Das entstehende T-Endspiel bietet dem Weißen zwar ganz gute Gewinnchancen,noch stärker war aber,mit dem L/S-Tausch noch abzuwarten.
[34.b4! Ta2
(34...Kc7 35.Td2)
(34...Ta3+ 35.Kd4)
35.Kc3+ Kc7! 36.Td2 Ta1
(36...Txd2?? 37.Sxe6+ fxe6 38.Kxd2)
37.Sxe6+! fxe6 38.Kd4 Kd6
(38...Kb6 39.Ke5 Tc1 40.c5+ Kb5 41.g3 Kxb4 42.Kd6!)
39.c5+ Ke7
(39...Kc7 40.Ke5 Ta3)
40.Ke5 Ta3
(40...Te1 41.Td3! Tb1 42.Ta3)
41.Td6 Txe3+ 42.Kd4 Te4+
(42...Te2 43.Txc6)
43.Kc3 Te3+
(43...e5 44.Txc6 Te3+ 45.Kc4 Te4+ 46.Kd5 Txf4 47.b5)
44.Kc4 Te4+ 45.Kb3 Te3+
(45...Txf4 46.Txc6)
46.Ka4 Te4 47.Txc6]
34...fxe6 35.Kc3+ Kc7 36.c5! e5! 37.Td6! exf4 38.exf4 Ta2
[Zumindest gleichwertig:
 38...Ta5!? 39.Kd4 Ta2 40.Tf6! Td2+ 41.Ke3 Txg2 42.Tf7+ Kb8 43.Txh7 Tb2 44.h4 Txb3+ 45.Kd4 Tb4+ 46.Ke5 Kc8 47.Th6 Te4+ 48.Kd6 Txf4 49.Kxc6 Kd8]
39.Td2 Ta1 40.Te2 Kd7 41.g3 Tc1+ 42.Kb4 Ta1 43.Td2+ Kc7 44.Kc4 Te1 45.Kd3 Tb1 46.Kc3 Te1 47.Kb4 Te3 48.Td6 Te4+ 49.Ka5 Te2 50.Tf6! Ta2+! 51.Kb4 Txh2 52.Tf7+ Kd8! 53.Ka5 Ta2+?? Treibt den weißen K nach b6,wo er ohnehin hin will.Ein entscheidender Tempoverlust ?!
[Nach 53...Th3! ist für Weiß kein Gewinn in Sicht:
 54.b4
(54.Kb6 Txg3 55.Kxc6 (55.b4?! Tb3 56.Kxc6 (56.b5 Txb5+ 57.Kxc6 Tb4) 56...Txb4 57.Txh7 Txf4) 55...Txb3 56.Td7+ Ke8 57.Txh7 Tb4)
54...Txg3 55.b5
(55.Txh7 Ta3+ 56.Kb6 Tb3 57.Kxc6 Txb4 58.Th8+ Ke7 59.Kd5 (59.Th1 Txf4) (59.Th4 Ke6 60.Th6 Txf4 61.Txg6+ Ke5 62.Kb7 Tc4 63.c6 f4 64.c7 (/\ Tc6)
 64...Txc7+ 65.Kxc7 f3) 59...Ta4 (59...Txf4?? 60.c6) 60.Th7+ (60.Th4 Kd7 61.Th7+ Kd8 62.Kd6 Td4+ 63.Ke5 (63.Kc6 Txf4)) 60...Kd8 61.Kd6 Td4+ 62.Ke6 Te4+)
(55.Tb7 Tb3 56.Txh7 Ta3+ 57.Kb6 Tb3 58.b5 (58.Tg7 Txb4+ 59.Kxc6 Txf4) 58...Txb5+ 59.Kxc6 Tb4 60.Th8+ Ke7)
55...cxb5 56.Kb6 b4 57.c6 Tc3
(57...b3?? 58.c7+ Ke8 (58...Kc8?? 59.Tf8+ #3) 59.Tf6! (/\ #3)
 59...Ke7 60.c8=D (60.Tc6?? b2 61.c8=D b1=D+ 62.Kc7 Dd3) 60...Kxf6 61.Dh8+ Ke6 62.Kc6)
58.c7+
(58.Txh7 b3 59.Td7+ (59.Th8+ Ke7) 59...Ke8 60.Td2 Tc2 61.Td1 (61.Txc2?? bxc2) 61...b2)
(58.Kb7 b3 59.Td7+ Ke8 60.Td2 Kf7 (60...Tc2?? 61.c7) 61.c7 g5! 62.c8=D Txc8 63.Kxc8 g4 64.Kd7 h5 65.Th2 Kg6 66.Ke6 g3 67.Te2 h4 68.Tg2 b2! 69.Txb2 h3 70.Tb3 g2 71.Tg3+ Kh5 72.Txh3+ Kg4 73.Th6 Kxf4 74.Tg6)
(58.Td7+ Ke8 59.Kb7 b3 60.Td2 (60.Td1 b2 61.c7 Tb3+ 62.Kc6 Tc3+ 63.Kb7 Tb3+ 64.Kc8) 60...g5 61.fxg5 Tc2 62.c7 b2 63.Td1 Kf7)
58...Ke8 59.Txh7 b3 60.Th2 Kf7 61.Td2 g5 62.fxg5 Kg6 63.Td6+ Kxg5 64.Kb7 Txc7+ 65.Kxc7 f4]
54.Kb6 Tb2 55.Kxc6 Txb3 56.Txh7 Txg3 57.Td7+
[Möglicerweise bietet
 57.Th8+ bessere Gewinnchancen.Das ließe sich nur mit einer aufwendigen Analyse feststellen.]
57...Kc8
[Auch 57...Ke8 scheint remis zu sein:
 58.Kc7
(58.Tg7 Kd8 59.Tg8+ Ke7 60.Kb6 Tb3+ 61.Kc7 Kf7 62.Td8 (62.Th8 g5 63.fxg5 Kg6 64.Tg8+ Kf7) 62...g5 63.fxg5 Kg6 64.c6 (64.Tg8+ Kf7 65.Th8 Kg6 66.Kd6 Kxg5) 64...Kxg5 65.Td5 Kg4 66.Kd6 Tb6 67.Tb5 Ta6 (67...Txc6+?? 68.Kxc6) 68.Kd7 f4)
58...Tg4 59.Td4
(59.c6 Txf4)
59...g5 60.Kb7
(60.c6 gxf4 61.Kb7 Ke7 62.c7 Tg8 63.Txf4 Ke6)
60...gxf4 61.c6 Ke7 62.c7 Tg8 63.Txf4 Ke6]
58.Ta7 Kb8? Die falsche Seite!
[58...Kd8! scheint das Remis zu sichern.Im Folgenden sind nur einige Varianten angegeben.Als Strategie für Schwarz schält sich heraus: Tausch Bg6/Bf4 mit schwarzer K-Unterstützung,T-Opfer gegen c-Bauer,verbleibender weißer f-Bauer erreicht Remis gegen schwarzen Turm.
 59.Tg7
(59.Ta8+ Ke7 60.Kb7 (60.Tg8 Kf7) 60...Tb3+ 61.Kc7 Tb4 62.c6 Txf4)
59...Ta3 60.Tg8+
(60.Txg6?? Ta6+)
(60.Kd6 Td3+ 61.Ke5 Te3+! 62.Kd5 (62.Kf6 Tc3 63.Tg8+ Kd7 64.Txg6 Txc5) 62...Td3+ 63.Ke6 Te3+ 64.Kf6 Tf3 65.Tg8+ Kd7 66.Txg6 Txf4)
60...Ke7 61.Kc7
(61.Kb7 Tb3+ 62.Kc7 Kf7)
61...Kf7 62.Tb8
(62.Td8 g5 63.fxg5 Kg6 64.Tg8+ Kf7 65.Td8 Kg6)
62...g5! Diese Wendung taucht in den verschiedenen Varianten in leicht veränderter Form immer wieder auf.Die Freilegung und das Vorgehen des f-Bauern ermöglicht vor allem ggf. den Turm für den c-Bauern zu opfern.
 63.fxg5
(63.Kd6 gxf4)
63...Kg6 64.c6 Kxg5 . 65.Kd6
(65.Kc8 f4 66.c7 f3)
65...Td3+ 66.Ke5
(66.Ke7 Te3+ 67.Kd7 (67.Kf7 Tc3) 67...Td3+ 68.Kc8 f4 69.c7 f3)
66...Te3+
(66...Tc3 67.Tg8+ Kh6 68.Kd6 Td3+ 69.Ke6 Tc3 70.Kd7 Td3+ 71.Kc8 Kh5 72.c7 f4 73.Kb8 Tc3 74.c8=D Txc8+ 75.Kxc8 Kh4 76.Kd7 f3 77.Ke6 f2 78.Tf8 Kg3)
67.Kd4 Te7 68.Tg8+
(68.Tb5 Kg4 69.Tb7 Te8 70.c7 Tc8)
68...Kf4 69.Kc5
(69.Tg1 Kf3)
69...Te1]
59.Tb7+?
[59.Tg7! Tc3
(59...Tg1 60.Tg8+ Ka7 61.Kc7! Ka6 (61...Tb1 62.c6 Tf1 63.Kd7 Td1+ 64.Kc8 Kb6 65.c7) (61...g5 62.Txg5 Tc1 63.Txf5) 62.c6)
(59...g5 60.Tg8+ Ka7 61.Txg5)
60.Tg8+ Ka7 61.Kd6 Td3+
(61...Kb7 62.Txg6 Td3+ 63.Ke5 Tc3 (63...Kc7 64.Te6 Td1 65.Kxf5) 64.c6+ Kc7 65.Kxf5)
62.Kc7 Td2
(62...Tf3 63.c6 Txf4 64.Kd6 Td4+ 65.Kc5 Td1 66.c7)
(62...Ka6 63.c6 Kb5 64.Txg6)
63.c6 Ka6
(63...Td4 64.Kc8 Txf4 65.c7 Tf1 (65...Td4 66.Td8 Tc4 67.Kd7) 66.Kd7 Td1+ 67.Ke7 Tc1 68.c8=D Txc8 69.Txc8 Kb6 70.Tf8 Kc5 71.Kf6 Kd4 72.Kxg6)
64.Kb8 Kb6
(64...Tb2+ 65.Kc8)
65.c7]
59...Kc8 60.Tg7 Kb8?
[60...Kd8!]
61.Tg8+ Ka7 62.Kd6 Td3+ 63.Ke5?
[63.Kc7!]
63...Te3+ 64.Kf6?
[64.Kd6! Td3+ 65.Kc7]
64...Te4? Das falsche Feld,um f4 anzugreifen!
[64...Tf3! Unterschied zu Te4: Auf Kg5 ist Tg3+ möglich.
 65.Ke6
(65.Kg5 Tg3+ 66.Kh6 (66.Kf6 Tf3) 66...Tg4 67.Txg6 Txf4 68.Kg5 Tg4+ 69.Kxf5 Txg6 70.Kxg6 Kb7)
65...Txf4 66.Kd7
(66.Txg6 Tf1 67.c6 Kb6 68.Kd7 Tc1)
66...Td4+ 67.Kc7 f4 68.c6 f3]
65.Kg5 #31 Tc4 66.Txg6 Txc5 67.Tf6 Kb7 68.Txf5 Tc1 69.Td5

1-0

Created with PGNtoJS