(;GM[1]FF[4]SZ[19]
GN[Carpenter's square]
PC[http://senseis.xmp.net/?GokyoShumyoSection2Problem27/Attempts]AP[GoWiki:2009]
DT[2014-04-28]
C[Diagram from http://senseis.xmp.net/?GokyoShumyoSection2Problem27/Attempts

Carpenter's square]
PL[W]

AB[db][gb][fc][bd][cd][dd][ed][fd][be][cf]
AW[eb][fb][hb][ec][gc][hc][ce][ge][bf][df][ff][dg][bh]
CR[be]
LB[ea:a]

;W[bb]C[W1]MN[1]
;B[dc]C[B2]MN[2]

;CR[be]
LB[ea:a]
)
