(;GM[1]FF[4]SZ[11]
GN[5 at marked black stone; 6 at marked white stone]
PC[http://senseis.xmp.net/?PracticalEndgameTest4/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?PracticalEndgameTest4/Solution

5 at marked black stone; 6 at marked white stone]
PL[B]

AB[kb][ec][fc][gc][hc][ic][jc][dd][ed][de][ie][je][ke][cf][ef][kf][ag][bg][cg][dg][ig][jg][dh][fh][gh][hh][ih][di][ei][hi][aj][ej][fj][gj][dk][fk]
AW[ja][db][eb][fb][gb][hb][ib][jb][dc][kc][bd][cd][jd][kd][ae][ce][af][bf][jf][kg][ah][bh][ch][eh][jh][kh][ai][ci][ii][ji][ki][bj][cj][dj][hj][ij][ck][gk][hk][jk][kk]
CR[kc][dk]

;B[id]C[B1]MN[1]
;W[ek]C[W2]MN[2]
;B[bk]C[B3]MN[3]
;W[ak]C[W4]MN[4]

;CR[kc][dk]
)
