(;GM[1]FF[4]SZ[19]
GN[Mutual protection]
PC[https://senseis.xmp.net/?TwoSquares]AP[GoWiki:2009]
DT[2024-01-11]
C[Diagram from https://senseis.xmp.net/?TwoSquares

Mutual protection]
PL[B]

AB[cb][db][eb][cc][ec][cd][dd][ed][de][cf][df][ef][cg][eg][ch][dh][eh]
LB[dc:m][dg:m]


;LB[dc:m][dg:m]
)
