(;GM[1]FF[4]SZ[19]
GN[Proposed solution]
PC[http://senseis.xmp.net/?RTGProblem39/Attempts]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?RTGProblem39/Attempts

Proposed solution]
PL[B]

AB[ql][rl][om][qm][sm][nn][rn][qo][ro][so][ip][jp][kp][lp][mp][np][sp][iq][kq][nq][qq][rq][ir][nr][rr][sr][is][rs][ss]
AW[pn][qn][po][pp][qp][rp][jq][lq][oq][pq][jr][kr][mr][or][pr][qr][js][ns][os][qs]

;B[ls]C[B1]MN[1]
;W[ms]C[W2]MN[2]
;B[lr]C[B3]MN[3]
;W[ks]C[W4]MN[4]

;
)
