This game is Draw, but result is black won............

look at this game and get a decition...

Helpmate is possible

Thank you @veryfunnyjokes

after that it can go...
80.ba2 kc2 81.kg1 kc3 82.kf1 kd3 83. ke1 kc3 84. kd1 bg7 85.kc1 bh8 86.kb1 bg7 87.ka1 kc2#