
Difficult endgame problem
Black to play. White groups on the left side have many weaknesses, how can Black make effective use of them?

Black to play. White groups on the left side have many weaknesses, how can Black make effective use of them?
I let ChatGPT (Black) play against Katago (White). I had to stop the game though because ChatGPT kept reading the coordinates wrong. But it seems like the result has already been determined anyway, I don't think ChatGPT could create any living group if the game kept continuing. Maybe I should give it 25 stones next time (until I figure out how to make it read the coordinate right).
SGF:(;GM[1]FF[4]SZ[19]KM[6.5];B[jj];W[qd];B[dd];W[dp];B[pp];W[oc];B[pd];W[pc];B[od];W[nd];B[qe];W[rd];B[qc];W[mc];B[nc];W[nb];B[md];W[ne];B[me];W[qq];B[pq];W[qp];B[po];W[rn];B[qo];W[ro];B[sp];W[pr];B[oq];W[or];B[nq];W[pm];B[on];W[fq];B[cd];W[gd];B[fd];W[fc];B[gc];W[ec];B[ed];W[hc];B[hd];W[ge];B[he];W[gf];B[fe];W[gb];B[hb];W[ic];B[jd];W[lq];B[lp];W[kp];B[jq];W[lo];B[mp];W[kq];B[lr];W[jp])
Conservation with ChatGPT: https://chatgpt.com/share/6a483ddc-c394-83ec-a85b-c79ebbf5821b
Black to play. Find the best move/tesuji for Black to make points in the top-left corner. (Sorry for the mistakes in my last post.)