(;GM[1]FF[4]SZ[19]
GN[Problem 4]
PC[https://senseis.xmp.net/?LifeAndDeathTheBook/Errata]AP[GoWiki:2009]
DT[2024-09-18]
C[Diagram from https://senseis.xmp.net/?LifeAndDeathTheBook/Errata

Problem 4]
PL[B]

AB[ea][eb][ec][cd][dd][ae][be][cf]
AW[da][db][bc][cc][dc][ad][bd]

;B[bb]C[B1]MN[1]
;W[ab]C[W2]MN[2]
;B[ba]C[B3]MN[3]
;W[cb]C[W4]MN[4]

;
)
