After 42...13-19 white can make combination 43.26-21! 17x37 44.28x17 37x30 (37x48 17-11!) 45.35x11 16x7 46.17x8 with win. During the game I wrong evaluated resulting endgame as a draw and cancelled this combination

43. 26-21 17x37 44. 28x17 37x30 45. 35x11 16x07 46. 17x08

43. 26-21 17x37 44. 28x17 37x48 45. 17-11 48x30 46. 35x04