(;AW[dq]AW[co]C[Let's start with an invasion. Please play at AFORCE]AW[gq]AB[fo]AB[io]AB[iq]LB[cq:A]AW[cl]AP[goproblems];B[cq];W[cp]LB[dr:A]C[FORCE];B[dr];W[eq]C[The question starts here. Black to live and no KO.CHOICE]
(;B[bq]
(;W[er]C[CHOICE]
(;B[cs]
(;W[es]C[CHOICE]
(;B[ar];W[bp]C[CHOICE]
(;B[bs]C[RIGHT])
(;B[cr];W[bs]C[CHOICE]))
(;B[bp];W[ar]C[CHOICE]
(;B[bo];W[bn]C[CHOICE];B[br];W[ds]C[CHOICE]
(;B[as];W[bs]C[no KOCHOICE])
(;B[aq];W[ao]C[CHOICE];B[as];W[cr]C[CHOICE]))
(;B[br];W[bo]C[CHOICE]
(;B[ds];W[bs]C[CHOICE])
(;B[as];W[ds]C[CHOICE];B[aq];W[cr]C[CHOICE])))
(;B[br];W[ds]C[CHOICE]
(;B[bp];W[bo]C[CHOICE])
(;B[cr];W[bp]C[CHOICE]))
(;B[bs];W[ar]C[CHOICE]
(;B[br];W[bp]C[CHOICE])
(;B[aq];W[bp]C[CHOICE])))
(;W[ar]C[CHOICE];B[br];W[es]C[CHOICE];B[as];W[bs]C[CHOICE];B[aq];W[ds]C[CHOICE];B[cr]C[Black lives. credit to brivRIGHT]))
(;B[cr];W[bp]C[CHOICE]
(;B[bs];W[ar]C[CHOICE])
(;B[ar];W[bs]C[CHOICE]))
(;B[ds];W[bs]C[CHOICE]
(;B[cr];W[bp]C[CHOICE])
(;B[br];W[es]C[CHOICE]
(;B[bp];W[bo]C[CHOICE];B[ap];W[cr]C[CHOICE])
(;B[cr];W[bp]C[CHOICE]))
(;B[bp];W[bo]C[CHOICE];B[br];W[es]C[CHOICE];B[ap];W[cr]C[CHOICE])))
(;W[bp]C[CHOICE]
(;B[br];W[er]C[CHOICE]
(;B[cs]C[RIGHT])
(;B[ds];W[es]C[CHOICE]
(;B[cs]C[RIGHT])
(;B[bs]C[RIGHT])))
(;B[cr];W[er]C[CHOICE]
(;B[bs];W[ar]C[CHOICE])
(;B[ar];W[bs]C[CHOICE]))
(;B[bs]
(;W[er]C[CHOICE];B[ds];W[ar]C[CHOICE];B[aq];W[br]C[CHOICE];B[cr]C[RIGHT])
(;W[ar]C[CHOICE]
(;B[aq];W[br]C[CHOICE];B[cr];W[er]C[CHOICE];B[ds]C[RIGHT])
(;B[br];W[aq]C[CHOICE];B[er];W[fr]C[CHOICE])))
(;B[cs];W[ar]C[CHOICE]
(;B[aq];W[br]C[CHOICE];B[er];W[fr]C[CHOICE])
(;B[br];W[aq]C[CHOICE];B[er];W[fr]C[CHOICE]
(;B[es];W[bs]C[CHOICE])
(;B[as];W[bs]C[CHOICE])))
(;B[er]
(;W[br]C[CHOICE]
(;B[cr];W[fr]C[CHOICE]
(;B[bs];W[ar]C[CHOICE];B[aq]C[RIGHT])
(;B[ar];W[bs]C[CHOICE]))
(;B[fq];W[fp]C[CHOICE];B[fr];W[gp]C[CHOICE]
(;B[gr]C[Situational Answer.RIGHT])
(;B[cr];W[aq]C[CHOICE];B[gr]C[Situational answerRIGHT])))
(;W[fr]C[CHOICE]
(;B[br]C[RIGHT];W[cs]C[CHOICE];B[bs];W[es]C[CHOICE];B[cr]C[RIGHT])
(;B[bs]C[];W[ar]C[CHOICE];B[aq];W[es]C[CHOICE];B[ds];W[cr]C[CHOICE];B[fs];W[br]C[CHOICE];B[hs]C[];W[hr]C[CHOICE];B[ir];W[gs]C[Ko, thanks to inspere and blyx pointing outCHOICE])
(;B[ar];W[bs]C[CHOICE];B[cs];W[es]C[CHOICE];B[br];W[fs]C[CHOICE];B[as];W[ds]C[CHOICE])
(;B[cs];W[ar]C[CHOICE]
(;B[br];W[aq]C[CHOICE];B[es];W[bs]C[CHOICE])
(;B[aq];W[br]C[CHOICE]))
(;B[cr];W[es]C[CHOICE];B[bs];W[ar]C[CHOICE])
(;B[ds];W[br]C[CHOICE])
(;B[es];W[br]C[CHOICE];B[cr];W[aq]C[CHOICE])))))
(;B[br];W[bq]C[CHOICE];B[cr];W[ap]C[CHOICE]
(;B[er];W[fr]C[CHOICE];B[ar];W[es]C[CHOICE])
(;B[ar];W[er]C[CHOICE]))
(;B[cr];W[bp]C[CHOICE]
(;B[bq];W[er]C[CHOICE]
(;B[bs];W[ar]C[CHOICE])
(;B[ar];W[bs]C[CHOICE]))
(;B[ar];W[bq]C[CHOICE];B[br];W[er]C[CHOICE])
(;B[bs];W[bq]C[CHOICE])
(;B[er];W[fr]C[CHOICE]
(;B[ar];W[bq]C[CHOICE];B[br];W[es]C[CHOICE])
(;B[bs];W[bq]C[CHOICE])))
(;B[er];W[fr]C[CHOICE];B[bq];W[bp]C[CHOICE]
(;B[bs];W[ar]C[CHOICE];B[aq];W[es]C[CHOICE];B[ds];W[cr]C[CHOICE];B[fs];W[br]C[CHOICE];B[hs]C[];W[hr]C[CHOICE];B[ir];W[gs]C[Ko, thanks to inspere and blyx pointing outCHOICE])
(;B[br]C[Lives, thanks N0n0sama pointing it outRIGHT];W[cs]C[CHOICE];B[bs];W[es]C[CHOICE];B[cr]C[RIGHT])))