(;GM[1]FF[4]SZ[19]
GN[The problem]
PC[http://senseis.xmp.net/?TsumegoFromGames101/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?TsumegoFromGames101/Solution

The problem]
PL[B]

AB[ca][eb][fb][fc][cd][fd][be][ce][fe][gf][cg][eg][gg][ch][dh][fh][gh][ci][cj]
AW[da][bb][db][bc][cc][ec][dd][de][ee][df][ff][dg][fg][di]

;B[ba]C[B1]MN[1]
;W[aa]C[W2]MN[2]
;B[ac]C[B3]MN[3]
;W[bd]C[W4]MN[4]
;B[ad]C[B5]MN[5]

;
)
