(;AB[cd]AB[ce]AB[df]AB[ef]AB[ff]AB[eg]AB[eh]AB[gc]AB[ge]AB[fd]AW[fe]AW[ee]AW[de]AW[cf]AW[dg]AW[cg]AW[fg]AW[gg]AW[gf]C[White to play and connect his 2 groups under the black stones.]SZ[9]AB[gd]AW[he]AP[goproblems] (;W[ei]C[];B[ed]C[White delta is the nose tesuji contributed by Fokatukc in problem 13899.]TR[ei] (;W[dh];B[dd];W[fh]C[RIGHT]) (;W[fh]C[];B[dd];W[dh]C[RIGHT])) (;W[fh];B[ei];W[dh] (;B[ed];W[di];B[dd]) (;B[dd];W[di];B[ed])) (;W[dh];B[ei];W[fh];B[ed];W[di];B[dd]) (;W[di];B[ei];W[dh];B[ed];W[fh];B[dd]) (;W[fi];B[ei];W[fh];B[ed];W[dh];B[dd]))