(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]RU[Japanese]SZ[19]KM[0.00]PW[White]PB[Black]DT[2012-11-16]PC[The KGS Go Server at http://www.gokgs.com/];AW[ec][pc][bd][pd][qd][ce][cf][df][pf][dj][qj][qm][bo][eo][cp][dp][pp][pq][qq]AB[pb][nc][qc][cd][jd][de][ee][cn][po][bp][qp][cq][fq][rq]LB[hj:3][nj:1][hm:4][nm:2]TR[pb][nc][qc][cd][de][ee][po][bp][qp][cq][fq][rq]C[Exercices number 1];W[jg]LB[ob:A][qb:B][rb:C][rc:D]C[1 a : On the top right corner, black can play either A, B, C or D](;B[ob];W[qb]C[not good for black];;W[kp]C[1 b : Right bottom](;B[ro]C[good shape for black];W[oo]C[but it helps white to build something on the South side];B[pn];W[rr];B[sr];;W[hj]LB[cc:E][dc:F][dd:G]C[1 c : three choices for black on the top left cornerBut, G is not good because of the bad shape](;B[dc];W[bc]LB[db:A][eb:B]C[Black can't tenuki because white would give black a bad shape and would also connect his single stone with move A. So black should play at A or B.];;W[hm]C[1 d :](;B[br]C[Is it good ?];W[ap];B[bq];W[co]C[the first black move is good because he can play elsewhere now];B[jl];W[dq];B[dr];W[er];B[eq];AE[ob][pb][qb][bc][nc][qc][bd][jd][qd][cf][jg][dj][hj][qj][jl][hm][qm][cn][bo][oo][ro][ap][bp][kp][bq][dq][eq][fq][rq][br][dr][er][rr][sr]AW[cb][db][fb][cc][fc][oc][cd][de][pe][qe][pj][do][po][qp][cq]AB[eb][dd][ed][gd][nd][od][df][of][pf][qf][dn][eo][dp][np][pp][oq]LB[hj:2][mj:1][hl:3][ml:4]TR[dc][dd][ed][gd][nd][od][ee][df][of][pf][qf][dn][pn][eo][np][pp][oq]C[Exercices number 2];AW[mj]LB[oe:A][mf:C][nf:B][mg:D][ng:E]C[2 a : Where should black play ? A, B, C, D or E ? A seems to be too slow. B is less than A but still slow](;B[mf];W[oe]C[white can have forcing moves];B[ne];W[ng];B[nf];;AW[hj]LB[fd:F][ge:H][ef:G]C[2 b : Where should black play ? G, F or H](;B[ef];W[fd]C[black is cut];;AW[ml]C[2 c :](;B[fo];W[en]C[shicho problems];;AW[hl]C[2 d :](;B[op];W[oo]LB[on:A]C[black groups are appart. white can also cut with AW];;AE[cb][db][eb][fb][cc][dc][ec][fc][ed][fd][gd][nd][od][de][ee][ne][oe][mf][nf][of][pf][ng][hj][mj][pj][hl][ml][pn][do][eo][fo][oo][po][np][op][qp][cq][oq][pq][qq]AW[pb][qb][jc][nc][qc][qd][re][cf][dg][ch][dm][cn][fq]AB[ob][oc][pc][cd][pd][pe][rf][en][cp][jp]LB[hh:2][mh:1][hl:3]TR[ob][oc][pc][cd][dd][pd][pe][df][ef][qf][rf][dn][en][cp][dp]C[(Exercice number 3) ];W[hh]C[3 a :](;B[og]C[best local move];W[pf]C[white is trapped];;W[]LB[ec:C][fc:B][hc:D][fd:A]C[3 b : black can play A or B](;B[fd]C[not the best for end game](;W[fb]C[it's still open under black stones];;W[hl]C[3 c : ](;B[eq];W[fp];B[do];W[dl];B[go];;AE[fb][ob][qb][oc][pc][cd][fd][qd][ce][pe][qe][re][df][ef][pf][rf][dg][og][hh][dl][hl][dm][cn][en][co][do][go][cp][fp][eq]AW[fc][ld][ck][rl][rm][dn][qn][po][qo][dp][qp][nq][qq]AB[qc][cf][qk][ql][qm][on][pn][fo][oo][fq][pq]LB[db:A][eb:B][dc:D][ec:C][ih:1][ik:2]TR[dd][cf][pp][pq]C[Exercice number 4](;B[db]C[good move];W[eb](;B[ec];W[fb];B[fd];W[gd];B[ge];W[cc];B[dc];W[fe];B[ed];W[hd];B[ff]C[this is joseki];W[cb](;B[ca];W[ba];B[da];W[ab]C[white is alive](;B[op]C[this is possible];W[pr];B[or];W[qr];;AE[ba][ca][da][ab][fb][pb][jc][qc][ed][fd][gd][hd][fe][ge][ff][qf][ck][qk][ql][rl][qm][rm][dn][on][pn][qn][fo][oo][po][qo][jp][fq][or][pr][qr]AW[nb][ob][dc][ec][hc][dd][md][de][le][ne][pq][nr]AB[cb][cc][fc][oc][cd][nd][od][me][mf][nf][pj][mo][qp][lq]LB[pb:A][qc:B][hh:2][lh:1]TR[ob][ch](;B[pb];W[qc](;B[pc];W[qb];B[pa](;W[re]TR[ch](;B[bf]C[simple move (do not help oppenent to build something with contact move)];;AE[pa][cb][db][eb][nb][ob][qb][cc][dc][ec][fc][hc][oc][pc][cd][dd][ld][md][nd][od][de][le][me][ne][re][bf][cf][mf][nf][ch][pj][mo][op][pp][qp][lq][nq][pq][qq][nr]AW[pb][lc][rc][rd][qf][qi][dm][ep][gp][hp][eq][cr][dr][bs]AB[rb][nc][qc][do][cp][bq][cq][dq][br]TR[pb]C[Exercice number 5];W[dd]C[5 a : ](;B[qb];W[oc];B[od];W[nb]LB[bm:D][cm:B][cn:A][en:C]C[5 b : black has no base of life](;B[en];W[bn]C[super good peep];B[co];W[em];B[fn];W[fm];B[gn];W[hl]C[white is happy];;AE[nb][pb][qb][rb][lc][nc][oc][dd][od][qi][hl][dm][em][fm][bn][en][fn][gn][co][do][cp][dp][ep][gp][hp][bq][cq][dq][eq][br][cr][dr][bs]AW[kc][pc][nd][pd][qe][nh][pi]AB[qd][re][pf][qf]TR[re][pf][qf]C[Exercice 6](;B[pe];W[qb];B[ri];W[rj];B[qi];W[qj];B[ph];W[oi];B[rg])(;B[rg](;W[ri];B[qb];W[pe];B[rb])(;W[qb];B[qj];W[qi];B[ri]C[black is bigger])))(;B[cm]C[good move];W[cl];B[cn];W[dl];B[bo])(;B[cn];W[cm];B[bm];W[bl];B[bo];W[am];B[bn]C[black is smaller])(;B[bm]C[good move];W[cn];B[bn];W[co];B[bo]C[black give up one stone ]))(;B[ob];W[qb](;B[pc];W[ra])(;B[ra](;W[sb];B[qa];W[pa])(;W[pc];B[qd](;W[oc];B[od];W[nb];B[pa];W[oa];B[qa];W[ob];B[mb]C[white is dead])(;W[od];B[pe](;W[oc];B[re])(;W[oe]C[when shicho is good for white];B[pf];W[qe];B[oc];W[pg];B[of];W[nf]))))))(;B[df]TR[ch]C[good local move after white approach];W[ef];B[eg](;W[dg];B[bg];W[ff];B[eh]C[seems good for black])(;W[ff];B[dh]C[white single stone suffer a lot]))(;B[cg]TR[ch]C[also a good local move after withe approach];W[dh](;B[cn])(;B[eg];W[dg];B[df];W[ef];B[ee]))(;B[cn]C[(black tenuki)](;W[be];B[ce];W[bf];B[bd];W[cg])(;W[df];B[bf]))(;B[dg];W[be];B[ce];W[bf]C[not good for black either]))(;W[qe];B[qd];W[rd];B[rc];W[rb];B[re];W[sc];B[qf]C[white took the corner but he is small]))(;B[qd];W[qb];B[pc];W[pa]))(;B[qc];W[pb]))(;B[oq]C[also possible];W[np];B[op];W[ko]C[white can escape ?])(;B[np];W[pr]C[note good for black])(;B[or];W[nr];B[op]C[white can still try to escape])(;B[pr];W[op];B[np];W[oq];B[mq];W[mp](;B[no];W[mr];B[lq];W[or]C[black stones are dead])(;B[nr];W[no];B[or];W[np];B[lp];W[lq];B[mr];W[lo];B[kp];W[nn];B[nm]C[let's fight !])))(;B[da];W[be];B[bf];W[ce](;B[df];W[ab];B[ae];W[ad];B[bd];W[cd];B[ac];W[bc]C[white is alive])(;B[de](;W[ab];B[ba];W[ca];B[bb];W[bc];B[cd];W[bd];B[ae];W[ad]C[white is on atari])(;W[cd](;B[ca];W[ba];B[bb];W[ab]C[Ko !])(;B[ad];W[ae];B[ca];W[ba];B[bb];W[ab];B[bc]C[white is dead])))))(;B[cc]TR[ec]C[with this move, you avoid lots of trouble like we saw with the marked answer])(;B[kl]C[black tenuki];W[cb];B[da];W[dc];B[cc](;W[ec];B[bb];W[cd];B[bc];W[de];B[bd];W[ce];B[be];W[df]C[black is smaller than before])(;W[ed];B[bb];W[cd];B[bc];W[de]C[not good for black])))(;B[ec];W[fd];B[fb];W[gb];B[eb]C[big corner for black])(;B[eb];W[fb];B[ec]C[seems possible]))(;B[fp];W[gp];B[eq];W[fo];B[ep];W[hn]))(;W[bd];B[bc];W[be]C[white is sente];B[hc];W[de];B[ee];W[bb];B[ac];W[cc];B[cb];W[dc];B[ed];W[db]))(;B[hc]C[this move prevent the normal move cut but ...];W[gd];B[gc];W[fd];B[fc]C[white can cut like this]))(;B[pg];W[of]C[white can peep])(;B[pf]C[black can think about this move]))(;B[nn]C[possible])(;B[oo]C[this is best];W[op]LB[on:B][no:A]C[black defends with A or B];B[on];W[nq];B[pp]C[and there's a Ko]))(;B[fn]C[possible];W[em]C[but white can peep];B[en])(;B[en];W[ep];B[fp];W[eq];B[fq])(;B[ep];W[en];B[dm];W[fn]C[most ugly play from black (two weak groups)])(;B[fm]LB[fm:B][gn:A]C[A or B keima are best here]))(;B[ge];W[ef]C[black is still cut])(;B[gf]C[This is the correct answer ^^];W[ef];B[eg];W[ff];B[fg]C[no chance for white]))(;B[mg];W[oe];B[ne];W[nf];B[mf]C[the other side shicho is good for black];W[ng];B[nh];W[og];B[ph]C[shisho does not work but black can play a geta to capture white stones])(;B[ng];W[mf];B[nf]))(;B[bq]C[If black choose to connect, he will end up gote.];W[co];B[dq]))(;B[cc]C[Why this move is not good ?];W[bc]TR[dd]C[White can also choose to cut at the marked stone](;B[dd]C[black has a bad shape (has if he would have played G at the beginning)])(;B[dc];W[eb];B[db];W[hc])))(;B[qo];W[rr]C[Black can't play hane here])(;B[rp]C[this move is possible]))(;B[rc];W[ob]C[not good for black])(;B[rb]C[most common move];W[rc];B[qb]))