I would like to hear comments from stronger players about other possible big moves so that the navigate solution may be more instructive but I wouldn't expect this to change the solution.
(
;
FF[4]
GM[1]
SZ[19]
AP[Jago:Version 4.18]
AB[ac][bb][cb][db][be][ce][de][cf][cg][ch][bh][ah][eh][eg][fi][gi][ej][hk][fl][gl][gm][hm][hn][in][im][gp][fq][jo][ko][kp][kn][lm][mm][nm][nl][om][pn][qn][pp][gb][hb][hc][ib][jb][kc][ld][md][oc][pf][qf][pg][ok][oj][oi][ni][mi][kh][lj][kj][jj][ij][ii][ih][ig][hg][gg][gf][ge]
AW[bc][bd][cd][ae][af][bf][bg][ei][di][ci][bi][fj][fk][gk][el][dn][dp][gn][go][ho][io][hl][il][jl][jm][jn][km][ll][lk][kk][nk][nj][ki][ji][jh][jg][jf][ie][jd][jc][ic][hd][gd][gc][fb][eb][ec][dc][ed][ee][fe][ff][fg][fh][gh][hh][hi][mh][nh][oh][pi][pj][pk][ol][pl][pm][qm][qh][qg][le][me][ln]
C[Black to play. Best move?]
(
;
B[ip]
C[Big for territory but there is a more urgent move.]
)
(
;
B[cq]
C[Looks good but there's a very urgent move around and J5 is still open.]
)
(
;
B[mk]
C[Connects the large black group to live stones. RIGHT]
)
(
;
B[ne]
C[Takes territory but the corner is still open since black needs to protect against connection to the R13 group.]
)
(
;
B[dq]
C[Big for territory but a more urgent move is around and J5 is still open.]
)
)