(;GM[1]FF[4]SZ[19]
GN[Weak carpenter's square]
PC[https://senseis.xmp.net/?WeakCarpentersSquare]AP[GoWiki:2009]
DT[2023-02-06]
C[Diagram from https://senseis.xmp.net/?WeakCarpentersSquare

Weak carpenter's square]
PL[W]

AB[db][dc][bd][cd]
AW[eb][ec][ed][be][ce][de]
CR[dd]
LB[da:c][bb:a][cb:b][bc:b][ad:c]


;CR[dd]
LB[da:c][bb:a][cb:b][bc:b][ad:c]
)
