(;GM[1]FF[4]CA[UTF-8]AP[CGoban:2]ST[2]
RU[Japanese]SZ[9]KM[0.00]
PW[White]PB[Black]SO[Go Training v. 2, prob. 5]AW[cb][db][eb][gb][cc][dd][ff]AB[dc][ec][fc][bd][cd]TR[dd]C[This problem is problem 5 from volume 2 of the Nihon Ki-in's 'Understand the Basics: Go Training' book. Black to capture the marked White stone.]
(;B[de]CR[de]
;W[ed]CR[ed]
(;B[fe]CR[fe]
(;W[fd]CR[fd]C[CHOICE]
;B[gd]CR[gd]
;W[ee]CR[ee]
;B[ef]CR[ef]C[RIGHT])
(;W[ee]CR[ee]C[CHOICE]
;B[ef]CR[ef]
;W[fd]CR[fd]
;B[gd]CR[gd]C[RIGHT]))
(;B[ee]CR[ee]
;W[fd]CR[fd]
;B[fe]CR[fe]
;W[gd]CR[gd]))
(;B[ed]CR[ed]
;W[de]CR[de])
(;B[ee]CR[ee]
;W[de]CR[de]
(;B[ce]CR[ce]
;W[df]CR[df])
(;B[df]CR[df]
;W[ce]CR[ce]
(;B[be]CR[be]
;W[cf]CR[cf]
;B[cg]CR[cg]
;W[dg]CR[dg]
;B[bf]CR[bf]
;W[ef]CR[ef]C[White has broken out of Black's trap.])
(;B[ef]CR[ef]C[A full triangle is generally considered a good thing, but White is still poised to escape.]))))