(;GM[1]FF[4]SZ[19]
GN[Mistake]
PC[https://senseis.xmp.net/?DietersMistakesIn2021/Solution93]AP[GoWiki:2009]
DT[2022-02-18]
C[Diagram from https://senseis.xmp.net/?DietersMistakesIn2021/Solution93

Mistake]
PL[W]

AB[gb][hb][nb][hc][jc][kc][lc][nc][cd][dd][gd][hd][id][kd][nd][pd][qd][be][ce][he][le][oe][pe][qe][re][se][cf][df][kf][lf][of][dg][eg][jg][mg][og][ih][jh][nh][fi][ii][mi][ni][ej][fj][hj][dk][dl][el][jl][kl][ll][pl][rl][dm][mm][om][qm][bn][cn][en][mn][nn][bo][fo][go][no][oo][po][qo][ip][jp][kp][lp][mp][rp][aq][bq][cq][dq][eq][gq][hq][rq][er][gr][ir]
AW[fb][ob][bc][cc][dc][ec][fc][gc][oc][pc][qc][rc][bd][ed][fd][jd][ld][od][rd][de][ge][ie][je][ke][me][ne][ef][ff][gf][hf][if][jf][pf][qf][rf][ig][kg][dh][kh][oh][ph][ei][ji][li][dj][ij][kj][lj][mj][nj][oj][ck][ek][lk][ok][pk][qk][rk][ml][nl][ol][em][km][lm][nm][on][pn][qn][rn][co][do][eo][ap][bp][cp][dp][ep][fp][np][pp][fq][iq][jq][kq][lq][mq][nq][qq][fr][hr][gs][hs]

;W[ik]C[W1]MN[1]
;B[ch]C[B2]MN[2]

;
)
