Feldgrösse (Pixel): 42 52 64 74 84

[%evp 0,106,18,-17,7,-27,-51,-41,-31,-41,-32,-19,-15,-13,-18,-5,-5,-16,-29,-28,-21,-37,-22,-26,-24,-31,-19,-37,-19,-22,-27,-27,-8,-24,-38,-38,32,3,57,45,56,53,40,44,77,89,135,141,132,132,138,141,180,174,356,133,133,140,140,147,219,213,209,219,216,198,192,196,198,197,197,199,195,203,209,210,202,205,211,205,203,213,218,213,192,211,210,171,210,203,206,215,215,190,251,191,295,196,225,111,111,141,143,152,174,196,485,0,0] 1.c4 e5 2.g3 Sf6 3.Lg2 d5 4.cxd5 Sxd5 5.Sc3 Le6 [ 5...Sb6 main ]]
6.Sf3 Sc6 7.O-O Le7 8.d3 50% for Wh [ 8.d4 69% for Wh ]
8...O-O 9.Sxd5 [ 9.Ld2 Dd7 ( 9...Sb6 ); 9.a3 ]
9...Lxd5 10.a3 [ 10.Le3 f5 11.Tc1 3-2-3 ]
10...a5 [ 10...f5 2-3-8 ]]
11.Le3 a4= 1 draw, 4 Bl wins 12.Tc1 f6 13.Lc5 Ta5 [ 13...Kh8 14.Lxe7 Dxe7 15.Dc2 Tfd8 16.Tfe1 Td7 17.Sd2 Cui-Sade, World Olympiad U16, 2018,1/2-1/2 ]
14.Lxe7 Dxe7 15.Sd2 Lxg2 16.Kxg2 Sd4 17.e3 but Wh's pieces get quite active [ 17.b4 axb3 18.Sxb3 Txa3 19.Sxd4 exd4 20.Dc2 Tc3 21.Db2 c6 22.Txc3 dxc3 23.Db3+ Kh8 24.Tc1 Dxe2 25.Dxb7 Db2 26.De7 Ta8 27.De1= SF16 ]
17...Sf5 [ 17...Se6 ]
18.Sc4 Ta6 19.Df3+/- Sd6 20.Sxd6 cxd6 21.Dd5+ [ 21.Tc2 ]
21...Kh8 22.Tc2 [ 22.Tc4 ]
22...Tc6 23.Txc6 bxc6 24.Dxc6+- Tb8 25.Tc1 Kg8 26.Dxa4 Txb2 27.Da8+ [ 27.Tc8+ Kf7 28.Dc4+ Kg6 29.Dg4+ ( 29.Tc7 Df8 30.Dg4+ Kh6 31.e4+- ) 29...Kf7 30.Dh5+ Ke6 31.Te8+- SF16 ]
27...Kf7 28.Dd5+ Kg6 29.Tc6 [ 29.De4+ Kh6 30.Dh4+ Kg6 31.Dg4+ Kh6 ( 31...Kf7 32.Dh5+ ) 32.Tc8+- SF16- Engines are good at these long lines of calculation, humans much less so. ]
29...Da7 30.De4+ Kh6 31.Txd6 Db7 [ 31...Dxa3 32.Dxe5+- ]
32.Dxb7 [ 32.Tc6 Tb5 ( 32...Tb6 33.Txb6 Dxb6 34.a4+- ) 33.h4+- ]
32...Txb7 33.d4 exd4 34.Txd4 Ta7 35.a4 Kg6 36.e4 [ 36.Kf3 activating the K is usually best in an ending rather than unforced pawn moves ]
36...Kf7 37.f4 Ke6 38.Kf3 h5 39.h4 Ta5 40.f5+ this the tactical Engine move, which should work, but requires some exactfollowup ( eg the e awn is now not so easy to advance , and the a pawn is still not moving either. [ 40.Ke3 bringing the K across to support the a pawn is a more systematic approach. The Bl K is cut off, more pawns are kept on and Bl has no entry for his R. ]
40...Ke7 41.g4 [ 41.Ke3! SF16 ]
41...hxg4+ 42.Kxg4 Ta8 43.h5 [ 43.Kh5 Th8+ 44.Kg6 Txh4 45.Kxg7 Tg4+ 46.Kh6 Tg1 47.Tb4 Th1+ 48.Kg6 Tg1+ 49.Kh5 Th1+ 50.Kg4 Tg1+ 51.Kf3 Tf1+ 52.Ke3 after taking the g7 pawn, the K has to scramble his way back to the centre after all Ta1 53.Tb7+ Kf8 54.Ta7 Ta3+ 55.Kd4 Ta2 56.Kd5 Kg8 57.Ke6 Te2 58.Kxf6 Txe4 59.a5 Ta4 60.a6 Ta1 61.Ta8+ Kh7 62.Ke7 Te1+ 63.Kf7 Te2 64.Te8 Ta2 65.Te6 Ta5 66.f6 Tc5 67.a7 Tc7+ 68.Te7 Tc8 69.Te8 Tc7+ 70.Ke6 Tc6+ 71.Kd7 Ta6 72.a8=Q ]
43...Ta5 44.h6 gxh6 45.Kh5 Ta8 46.Tb4 Kd6 47.Kxh6 Kc5 48.Tb5+ [ 48.Tb7 Txa4 49.Te7 Ta8 50.Kg6 and Wh will get two connected passed pawns ]
48...Kd4 49.a5 [ 49.Kg6 Kxe4 50.a5 Ta6 51.Tb6 Txa5 52.Txf6 in order to save K & R vs K, R & p endings, the defending K needs to be in front of the pwn, not cut off behind or to one side. ]
49...Kxe4 50.Kg6 Ta6 51.Tb6 Txa5 52.Txf6 Ta7 53.Tf7 [ 53.Te6+ Kd5 54.Te1 is a simple win, but Wh has spent too much time sacrificing pawns to break in withthe K on the K side ]
53...Txf7 time

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The chess pieces created by Colin M.L. Burnett. are distributed under the terms of GFDL & BSD & GPL.