(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]
RU[Japanese]SZ[19]KM[0.00]
GN[ ]PW[White]PB[Black]AW[ca][cb][cc][ec][fc][gc][pc][cd][ed][pd][qd][de][ee][oe][qe][of][pf][qf][rg][oi][qi][qj][rj][rl][cm][dm][em][fm][gm][bn][hn][pn][qn][rn][ho][oo][cp][dp][hp][np][sp][bq][eq][fq][hq][nq][gr][nr][or][qr][rr][ps]AB[ba][bb][hb][pb][bc][ic][nc][oc][qc][rc][bd][dd][fd][hd][od][ce][fe][he][ne][cf][df][ef][nf][ng][og][pg][qg][qh][ri][fn][gn][bo][co][do][eo][go][qo][ro][bp][ep][fp][gp][pp][rp][gq][oq][pq][qq][rq][pr]LB[md:B][bg:C][bl:D][nn:A]C[The Four Problems - all black to play

A - Easy

B,C,D, - Medium]FG[259:]PM[0]VW[])
