(;GM[1]FF[4]SZ[19]
GN[No way out for white]
PC[http://senseis.xmp.net/?BentFourInTheCornerIsDead]AP[GoWiki:2009]
DT[2009-11-04]
C[Diagram from http://senseis.xmp.net/?BentFourInTheCornerIsDead

No way out for white]
PL[W]

AB[ba][fa][bb][cb][eb][fb][cc][dc][ec][dd][de][af][bf][cf][cg][ch]
AW[ga][ab][gb][bc][fc][gc][ad][cd][ed][fd][ae][be][ce][ee][df][ef]

;W[ac]C[W1]MN[1]
;B[ca]C[B2]MN[2]
;W[da]C[W3]MN[3]
;B[aa]C[B4]MN[4]

;
)
