Die Kommentare sind von Fritz 5

[13...Sxd2 14.Lxd2 c4 15.Sh2 Te8 16.Df3 Sd7 17.Dg3 Dd8 18.Lh6 Lf6 19.Sf3 Kh8 20.Ld2 h6 21.Kf1 Sf8 22.h4 Ld7 23.Dh2 Lantsias-Boisan/Olympiad, Varna (Bulgaria) 1962/0–1 (44)]

14.Sf1 Ld7 15.Se3 g6 Controls f5 16.Kh2 a5 Black prepares the advance b4 17.Tg1 a4 Black gets more space 18.Ld2 b4? Black plans a3. This push gains space [better is 18...Se8!?+= and Black could well hope to play on] 19.cxb4 cxb4 20.Lxb4 Sc4 21.Lc3?! [better is 21.Sxc4!? Dxc4 22.La3+- suivi de Fd3 et Tc1] 21...a3?! [21...Sxe3!? 22.fxe3 a3±] 22.Sxc4 Dxc4 23.Sd2?! [23.Ld3!? Dc5 24.Dd2 axb2 25.Lxb2+-] 23...Dc5 24.f3 Tfc8 25.Lb3 Lb5 26.De1 Sh5 27.Sf1 Sf4! [27...Lg5?! 28.g3 axb2 29.Lxb2±] 28.Lb4 Dd4 Black launches an attack 29.Lxa3 Se2 The mate threat is Qxg1 30.Th1 Lg5 31.Td1 [31.Lxd6?? Lf4+ 32.g3 Sxg3 33.Sxg3 Dxb2+ 34.Kg1 Lxg3 35.Dxg3 Dxa1+ 36.Kh2 Txa2+ 37.Lxa2 Tc2+ 0–1] 31...Db6 32.Lb4 Lf4+ [32...Sc1!? 33.Ld2 Sd3 A) 34.Le3?! Lxe3 (34...Sxe1? 35.Lxb6±) 35.Dxe3 Dxe3 36.Sxe3 Sf2=; B) 34.Dg3 34...Lf4 35.Lxf4 exf4 36.Dh4 Sf2+=]

33.g3 Lc1 34.Lc3 Sxc3 35.Txc1 Se2?! [35...Lxf1 A) 36.bxc3?? the knight is invulnerable 36...Txa2+ 37.Lxa2 Db2+ 38.Kg1 Dg2#; B) 36.Txf1 Sxa2 B1) 37.Lxa2?! Dxb2+ (37...Txc1 38.Dxc1 Txa2 39.Tg1=) 38.Kh1 Txc1 39.Dxc1 Txa2 40.Dxb2 Txb2=; B2) 37.Txc8+ 37...Txc8 38.La4+=; C) 36.Dxf1 Sxa2 37.Txc8+ Txc8 38.La4+=; D) 36.Txc3 Txc3 37.Txf1+=; E) 36.Dd2? 36...Sxa2! 37.Txc8+ Txc8 38.Lxa2 Tc1!-/+] 36.Td1 [=36.Txc8+ Txc8 37.Kg2 Tc1 38.Dd2±]

36...Sd4 37.De3 La4 38.Sd2? [better is 38.Tg1 Db4±] 38...Lxb3 39.axb3 [39.Sxb3?? Tc2+ 40.Sd2 (40.Td2?? Dxb3! 41.axb3 Txd2+ 42.Dxd2 Sxf3+ 0–1; 40.Kg1?? Sxf3+ 0–1) 40...Txa2–+] 39...Tc2 Plans Qxb3

40.Thf1?? les blancs creusent leur tombe [40.Thg1 Dxb3 41.Dxb3 Sxb3 42.Tg2=+] 40...Dxb3! 41.Dxb3 [41.Dh6 Txb2! (41...Sxf3+?! 42.Kh1 Txd2 43.Txd2 Sxd2 44.Dxd2 Dxg3–+) 42.Kh1 Dd3–+] 41...Sxb3 42.Tf2 Txb2 [42...Ta2!? might be the shorter path 43.Tb1 Sxd2 44.f4–+] 43.Kg1 Taa2 44.Sxb3 Txf2 45.Sc1 Tg2+ 46.Kh1 Th2+ 47.Kg1 Tag2+ 48.Kf1 Txg3 0-1