(;AP[goproblems]AB[ds]AB[er]AB[dq]AB[cr]AB[br]AB[bq]AB[bp]AW[cq]AW[cp]AW[dp]AW[bo]AW[cn]AW[eq]AW[fq]AW[fr]AW[fs]AW[es]C[Just a fool's variation of a old problem](;B[as];W[dr](;B[cs]C[RIGHT])(;B[ap];W[cs])(;B[aq];W[cs]))(;B[dr];W[bs];B[ap];W[ar])(;B[ap](;W[ar]C[CHOICE];B[dr];W[bs])(;W[dr]C[White mistake];B[ar]))(;B[bs];W[dr](;B[ap];W[ar])(;B[ar];W[ap]))(;B[aq];W[dr](;B[cs];W[as])(;B[as];W[cs]))(;B[ar];W[ap](;B[dr];W[bs])(;B[bs];W[dr])))