(;AB[is]AB[ir]AB[hr]AB[hq]AB[ip]AB[ho]AB[hn]AB[gn]AB[eo]AB[fo]AB[dp]AB[cp]AB[bq]AB[br]AB[bo]AW[cq]AW[cr]AW[ep]AW[eq]AW[er]AW[go]AW[gp]AW[gr]AW[gq]AW[gs]AW[hs]AW[hp]C[Black just played the mark stone. How can white live? (please do so in the most profitable way)]MA[fo]AB[fr]AP[goproblems] (;W[fp];B[dq] (;W[dr];B[cs] (;W[fs];B[ds]C[Dead.]) (;W[ds];B[fs]C[Dead.])) (;W[fs];B[cs]C[] (;W[ds];B[dr]C[Nope]) (;W[dr];B[ds]C[One eye.])) (;W[es];B[cs]C[Nope]) (;W[cs];B[dr]C[Nope])) (;W[ds] (;B[dq]C[CHOICE];W[fp];B[fs]C[One eye... and that's just weird shape in my opinion.]) (;B[fp]C[CHOICE] (;W[dq];B[fq]C[] (;W[fs];B[es]C[Oops.... we all do that sometimes.]) (;W[es];B[fs]C[Nope])) (;W[fq];B[dq] (;W[dr];B[fs]) (;W[fs];B[dr]C[False eye.]MA[es])))) (;W[dr] (;B[fp]C[CHOICE];W[fq];B[fs] (;W[es];B[cs]C[One eye]) (;W[cs];B[es]C[One eye.])) (;B[cs]C[CHOICE];W[fp];B[ds]C[One eye... and black's D1 wasn't even necessary at that moment.])) (;W[dq] (;B[fp]C[CHOICE];W[fq];B[cs]C[];W[ds]C[It's just that easy.RIGHT]) (;B[cs]C[CHOICE];W[ds];B[fp]C[];W[fq]C[Alive.RIGHT]) (;B[fs]C[Black's mistake: now get the max out of itCHOICE] (;W[ds];B[fp]C[];W[fq]C[That works, but playing at C1 instead of D1 is a point better.]MA[cs]) (;W[fp];B[ds]C[];W[cs];B[es]C[That's live shape for you... but... why is black still fighting?CHOICE] (;W[fq];B[bs];W[dr]C[Weird play by black, but you could have made 2 more points profit during that sequence.];B[es];W[fs]C[Sometime during this sequence there was a move that would have made you 2 more points. Try to find it.]) (;W[bs];B[ar] (;W[fq];B[as];W[dr]C[Good job with B1... it was two points better than plaing inside first.RIGHT]) (;W[dr];B[as];W[fq]C[RIGHT])) (;W[dr];B[bs];W[fq];B[es];W[fs]C[Sometime during this sequence there was a move that would have made you 2 more points. Try to find it.])) (;W[cs];B[fp]C[];W[fq]C[That works, but black probably wouldn't play F1... it gives you too many points. (I kept it in because of an interesting variation that can happen.RIGHT]) (;W[es];B[fp];W[fq];B[cs];W[ds]C[Only 5 points.]) (;W[bs]C[];B[ds] (;W[cs];B[es] (;W[fp];B[ar] (;W[fq];B[as];W[dr]C[Good job with B1... it was two points better than plaing inside first.RIGHT]) (;W[dr];B[as];W[fq]C[Good job with B1... it was two points better than playing inside first.RIGHT])) (;W[fq]C[Good job with B1... it was two points better than playing inside first.RIGHT]) (;W[dr]C[Good job with B1... it was two points better than plaing inside first.RIGHT])) (;W[es];B[cs]) (;W[fq];B[cs])))) (;W[es];B[fp] (;W[fq];B[dq];W[dr];B[cs]C[One eye.]) (;W[dq];B[fq]C[That's just dead...])) (;W[cs];B[dq];W[dr];B[fp];W[fq]C[Correct.RIGHT]) (;W[fs] (;B[fp]C[CHOICE];W[fq];B[dq];W[dr];B[cs];W[ds]C[Alive, but you can easily do better.]) (;B[cs]C[CHOICE];W[ds];B[dq] (;W[bs];B[dr]C[Dead.]) (;W[dr];B[fp];W[fq]C[Yes it's alive... but you only got 3 points inside?]) (;W[fp];B[dr]C[Nope.]))) (;W[bs];B[dq];W[dr];B[fp];W[fq];B[cs] (;W[ds];B[fs]) (;W[fs];B[ds];W[es];B[cs])))