(;SZ[4]AB[ad]AB[bd]AW[dd]AW[dc]AB[da]AB[ca]AW[aa]AW[ab]C[Please choose one from the four intersections.FORCE]LB[bb:a]LB[cb:b]LB[bc:c]LB[cc:d]AP[goproblems]
(;B[bb]LB[bc:a]LB[cb:b]LB[cc:c]C[White has nothing to escape.RIGHT])
(;B[cb]C[.FORCE];W[cc]C[.FORCE];B[bc]C[.FORCE];W[bb]C[Seki.])
(;B[bc]C[.FORCE];W[bb]C[.FORCE];B[cb]C[.FORCE];W[cc]C[Seki.])
(;B[cc]LB[bb:a]LB[cb:b]LB[bc:c]C[White has nothing to escape.RIGHT]))