(;GM[1]FF[4]SZ[19]
GN[Clamp on the second line]
PC[http://senseis.xmp.net/?SecondLineClamp]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?SecondLineClamp

Clamp on the second line]
PL[W]

AB[ci][di][ei][bj]
AW[bh][ch][dh][bi]
CR[eh][fh][fi][bj][ej][fj][ek][fk]
LB[aj:a][cj:b][ck:c]

;W[bk]C[W1]MN[1]

;CR[eh][fh][fi][bj][ej][fj][ek][fk]
LB[aj:a][cj:b][ck:c]
)
