(;GM[1]FF[4]AP[Sabaki:0.52.2]SZ[19]CA[UTF-8]AB[ar][as][bs][bq][cq][dq][eq][fr][gr][hs]AW[bp][bn][co][dp][ep][fo][fq][gq][hq][hr][er][gs]SO[bgj 200]GN[3 jubilee cakes problem]C[page 3 - jubilee cakes at Leamington Spa Go Club

Black to play]AN[Matthew Macfadyen](;B[fs]C[Correct.];W[es](;B[cr]C[Chocolate goes wrong.];W[ds];B[dr];W[gs]C[Only one eye.];B[fr];W[fs]C[White has enough liberties to connect successfully.];B[cs];W[gr])(;B[ds]C[Chocolate needs to atari now.];W[gs](;B[cr]C[But this is too soon to play the vital point.];W[dr]C[White can make a ko.];B[fr];W[cs]C[Ko.])(;B[dr]C[Correct.];W[cr]C[If White plays the vital point now...];B[fr]C[This cut will capture two or three stones.]))(;B[dr]C[Correct continuation.];W[gs];B[ds](;W[cr]C[If White tries to take away the second eye...];B[fr]C[...Chocolate can capture two or three stones and avoid being eaten.])(;W[fr]C[White cannot kill before protecting.];B[cr]C[So Chocolate can make the second eye.])))(;B[dr]C[This fails];W[fs](;B[ds];W[cr]C[Chocolate gets eaten.])(;B[cr];W[ds]C[Chocolate gets eaten again.])))(;GM[1]FF[4]AP[Sabaki:0.52.2]SZ[19]CA[UTF-8]AW[rr][qr][pr][pq][op][np][mq]AB[rq][qp][pp][oo][oq][or][lq][jq]TR[oq][or]C[page 6
problem from BGJ 0

Black to play and save the triangled stones.]SO[bgj 200]GN[6 problem 0](;B[ns]C[This is the move that connects out.](;W[nr];B[ls];W[lr];B[kr];W[mr];B[ms])(;W[mr]C[If White tries to disconnect it is White that gets captured.];B[lr];W[ms];B[mp](;W[nq];B[no])(;W[no]C[Some white stones can escape.];B[nq]))(;W[lr]C[This doesn't work either.];B[mr];W[nq];B[nr]C[Either 1 or 4 stones will be captured.](;W[no];B[kr])(;W[kr];B[mo])))(;B[mr]C[This leaves bad shape and Black fails.];W[nr];B[ns];W[nq];B[os];W[lr]))(;GM[1]FF[4]SZ[19]AP[Sabaki:0.52.2]CA[UTF-8]C[page 6
problem from BGJ 4

Black to play and live.]AB[ip][jp][gq][hq][kq][kr]AW[ho][io][jo][gp][kp][lp][eq][fq][lq][lr]GN[6 problem 4](;B[ir]C[This is the correct first play.];W[gr];B[hr];W[fr];B[ks]C[Black lives.])(;B[fr]C[Enlarging the eye space with this fails.];W[er](;B[gr];W[ir]C[This is the vital point];B[jr];W[ks];B[js];W[iq]C[Black is short of liberties.])(;B[gs]C[This also faiils.];W[ir];B[hr];W[js];B[ks];W[jq];B[iq];W[ls]C[Black is in a snap-back.])))(;GM[1]FF[4]AP[Sabaki:0.52.2]SZ[19]CA[UTF-8]AB[op][mp][lp][kp][kq][lo][ln][mr][ls][ks][js][is][hs][km][jm][ip][ho][gn][gj][mj][nm][pk][sk][sl][sj][si][sh][cj][aj][ai][ah][ak][al][jg][kd][ka][la][ja][ia][ha]AW[np][no][mn][lm][kn][ko][jp][mq][lr][kr][jr][hr][in][hm][ik][jj][ii][ki][kk][ml][rl][rj][ri][pj][dj][bj][bk][bh][ib][jb][lb][jd]GN[6 problem 20]C[page 6
problem from BGJ 20

The Spider's Web]SO[bgj 200];B[jn]C[The Spider's Web. Can Black rescue two stones with 1?];W[jo]C[The ladder starts...];B[jq];W[io];B[im];W[hn];B[hl];W[gm];B[fm];W[gl];B[gk];W[fl];B[el];W[fk];B[fj];W[ek];B[dk];W[ej];B[di];W[ei];B[eh];W[fi];B[gi];W[fh];B[fg];W[gh];B[hh];W[gg];B[gf];W[hg];B[ig];W[hf];B[he];W[if];B[jf];W[ie];B[id];W[je];B[jc];W[ke];B[le];W[kf];B[kg];W[lf];B[mf];W[lg];B[lh];W[mg];B[ng];W[mh];B[mi];W[nh];B[oh];W[ni];B[nj];W[oi];B[pi];W[oj];B[qj];W[ok];B[ol];W[nk];B[mk];W[nl];B[ll];W[mm];B[nn];W[mo];B[nq];W[oo];B[po];W[on];B[om];W[pn];B[qn];W[pm];B[pl];W[qm];B[rm];W[ql];B[qk];W[rk];B[qi];W[rh];B[rg];W[qh];B[ph];W[qg];B[qf];W[pg];B[og];W[pf];B[pe];W[of];B[nf];W[oe];B[od];W[ne];B[me];W[nd];B[nc];W[md];B[ld];W[mc];B[mb];W[lc];B[kc];W[kb];B[ic];W[hb];B[gb];W[hc];B[hd];W[gc];B[fc];W[gd];B[ge];W[fd];B[ed];W[fe];B[ff];W[ee];B[de];W[ef];B[eg];W[df];B[cf];W[dg];B[dh];W[cg];B[bg];W[ch];B[ci];W[bi];B[ck];W[bl];B[bm];W[cl];B[dl];W[cm];B[cn];W[dm];B[em];W[dn];B[do];W[en];B[fn];W[eo];B[ep];W[fo];B[go];W[fp];B[fq];W[gp];B[hp];W[gq];B[gr];W[hq];B[iq];W[ir]C[White is in damezumari and loses.])(;GM[1]FF[4]AP[Sabaki:0.52.2]SZ[19]CA[UTF-8]C[page 6
problem from BGJ 50

Black to play and damage the white position.]AB[ar][bq][bp][cp][dp][ep][gp][hp][ip][jp][kp][lp][kr][lr][en][fn][gn][hn]AW[bs][br][cq][dq][fr][hq][iq][jr]GN[6 problem 50]SO[bgj 200];B[er];W[eq];B[fq](;W[gq];B[cr];W[fp];B[dr];W[fq];B[cs];W[hr];B[gs];W[fs];B[is];W[js];B[hs];W[jq]C[This way makes seki and gets White the most points, but it is gote for White.])(;W[dr];B[gr];W[es];B[gq];W[gs];B[hs];W[fs];B[hr]C[This way gives more points to Black, but White has sente whch may be important.]))(;GM[1]FF[4]AP[Sabaki:0.52.2]SZ[9]C[page 6
problem from BGJ 57

Black to play and kill.]CA[UTF-8]AW[fi][gi][gh][gg][fg][eg][cg][bg][bh][bi]AB[ai][ah][af][ag][bf][cf][df][ef][ff][gf][hf][hg][hh][hi][fh]GN[6 problem 57]SO[bgj 200];B[dg]C[First move is easy.];W[dh];B[di]C[This the move that puts White into bad shape.];W[ch];B[eh]C[Sacrificing another stone..];W[ei];B[eh]C[... sets up a double snap-back.])(;GM[1]FF[4]AP[Sabaki:0.52.2]SZ[19]CA[UTF-8]AB[qs][ps][os][ns][ms][ls][ks][js][is][hr][hq][hp][ho][rr][rq][rp][qo][pn][on][no][mn][ln][ko][jo][jn][in]AW[io][ip][iq][ir][kp][kq][lo][mp][mq][lr][op][oq][po][qp][qq][pr]C[page 6
problem from BGJ 100

Black to play and kill.]GN[6 problem 100](;B[pp]C[The throw in does not take the eye away.];W[oo];B[qr];W[pq])(;B[pq];W[qr];B[oo];W[pp])(;B[or]C[It is this or the other second line move to the right that takes away the eye.](;W[qr];B[pp])(;W[oo];B[pq])(;W[pp];B[qr])))(;GM[1]FF[4]CA[UTF-8]AP[Sabaki:0.52.2]ST[2]RU[Japanese]SZ[19]AW[bq][ar][cr][dr][er][fr]AB[ap][bp][cq][dq][eq][fq][hq][gr][gs]C[page 6
problem from BGJ 150

Black to play and klll.]GN[6 problem 150];B[bs]C[This is the vital point - this is the correct way to kill white.](;W[br]C[Connecting leaves too little space on the edge.];B[fs];W[es];B[cs])(;W[cs]C[This looks like the strongest response.];B[br]C[But Black can play the 2-2 point tesuji.](;W[aq]C[This is self-atari];B[as])(;W[as];B[br]C[White still cannot connect the single stone because of damezumari.];W[bs];B[aq]C[White dies.]))(;W[fs]C[And widening the basis clearly goes nowhere.];B[br]))(;AP[Sabaki:0.52.2]CA[UTF-8]GM[1]ST[2]FF[4]SZ[19]AB[fp][dq][fq][en][er][go][ho]AW[gp][fr][gr][ip][gq]GN[ 9 go jottings problem 1]PM[2]FG[259:]DT[2022-07-01]C[page 9
go jottings 21 - shape topics problem 1]SO[bgj 200];B[hp]C[Black has just pushed with 1.
How does White reply?]LB[hp:1])(;AP[Sabaki:0.52.2]CA[UTF-8]GM[1]ST[2]FF[4]SZ[19]AB[fp][dq][fq][en][er][go][ho]AW[gp][fr][gr][ip][gq]GN[9 go jottings problem 1 solution]PM[2]FG[259:]C[page 9
go jottings 21 - shape topics problem 1 solution]SO[bgj 200];B[hp](;W[hq]TR[gq][gr];B[kq];W[jq];B[kp];W[io];B[in];W[jo];)(;AW[iq]))(;GM[1]FF[4]AP[Sabaki:0.52.2]SZ[19]ST[2]CA[UTF-8]FG[259:]GN[10 go jottings problem 2 ]AB[gp][eo][dq][dp]PM[2]AW[cq][cn][cp][fq]C[page 10
go jottings 21 - shape topics problem 2]SO[bgj 200];W[do]C[This shape occurs in handicap Go.
How does Black answer 1?]LB[do:1])(;AP[Sabaki:0.52.2]CA[UTF-8]GN[10 go jottings problem 2 solution]PM[2]FG[259:]GM[1]ST[2]FF[4]SZ[19]AB[gp][eo][dq][dp]AW[cq][cn][cp][fq]C[page 10
go jottings 21 - shape topics problem 2 solution]SO[bgj 200];W[do](;B[dr];W[en];B[fp])(;B[ep];W[en];B[fn];W[em])(;B[fp];W[dr]))(;ST[2]AP[Sabaki:0.52.2]CA[UTF-8]FF[4]GM[1]SZ[19]PM[2]GN[ 11 jottings problem 3]AB[hc][dd][pe][de][eb][pp][dc][ec]FG[259:]AW[cd][cb][db][pc][cf][cc][dp]C[page 11
go jottings 21 - shape topics problem 3]SO[bgj 200];B[nc];W[od]LB[nc:1][od:2]C[Here is a textbook example of a split shape, Black has played move 1 and White jumps out with the diagonal move 2.

How should Black respond?])(;ST[2]AP[Sabaki:0.52.2]CA[UTF-8]FF[4]GM[1]SZ[19]PB[ ]PM[2]PW[ ]GN[ 11 go jottings problem 3 solution]TR[od][nc]AB[hc][dd][pe][de][nc][eb][pp][dc][ec]FG[259:]AW[cd][cb][db][pc][cf][cc][od][dp]SO[bgj 200]C[page 11
go jottings 21 - shape topics problem 3 solution](;B[oe];TR[nc]W[nd])(;B[nd];W[oe];B[pf];W[of];B[pg])(;W[oe];B[pf];W[of];B[pg]LB[nd:A][ld:B])(;B[ld];W[oe];B[pf];W[of];B[pg]))(;GM[1]FF[4]AP[Sabaki:0.52.2]SZ[19]ST[2]CA[UTF-8]FG[259:]GN[16 go jottings problem 4]AB[cl][di][cf][ck][dp][cj]PM[2]AW[dj][bi][dd][ci][dk][fc]C[page 16
go jottings 21 - shape topics problem 4

White to play - note that the driving tesuji and split shape are closely linked]SO[bgj 200])(;GM[1]FF[4]AP[Sabaki:0.52.2]SZ[19]ST[2]FG[259:]CA[UTF-8]GN[ 16 go jottings problem 4 solution]AB[cl][di][cf][ck][dp][cj]PM[2]AW[dj][bi][dd][ci][dk][fc]C[page 16
go jottings 21 - shape topics problem 4 solution]SO[bgj 200];W[cg](;B[df];W[ei];B[dh];W[dg];B[eh];W[eg]TR[cf])(;B[ei];W[df]))(;GM[1]FF[4]AP[Sabaki:0.52.2]SZ[19]ST[0]CA[UTF-8]GN[14 castle game]DT[1667-12-05 (Kanbun 7-X-20)]PB[Yasui Chitetsu]EV[Castle game]PM[2]RE[W+5 (No further moves known)]PW[Honinbo Dosaku]FG[259:]C[page 14 - castle game]SO[bgj 200u];B[qd];W[oc];B[lc];W[ec];B[ce];W[cc];B[ch];W[pq];B[qo];W[qh];B[pe];W[qk];B[nd];W[cp];B[eq];W[iq];B[op];W[pp];B[po];W[oo];B[np];W[on];B[rq];W[nr];B[lp];W[rr];LB[om:A][nm:B]B[pm](;W[nm];B[ql];W[pk];B[ol];LB[nl:A]W[ml];B[ok];W[jn];W[jn];B[ql];W[pk];B[ol];W[ml];B[ok];W[jn];B[lm];W[km];B[ko];W[ll];B[ip];W[hp];B[io];W[jq];B[kq];W[rl];B[rm];W[pl];B[om];W[mo];B[or];W[pr];B[oq];W[os];B[mp];W[rp];B[ro];W[sq];B[qm];W[rk];B[oi];W[oh];B[nh];W[og];B[pi];W[nj];B[oj];W[qf];B[rj];W[ng];B[ri];W[qc];B[rc];W[rb];B[pc];W[qb];B[pb];W[rd];B[re];W[od];B[pd];W[oe];B[ob];W[nc];B[sd];W[fp];B[hq];W[gq];B[hr];W[gr];B[ho];W[gp];B[cq];W[dp];B[bp];W[dq];B[br];W[cr];B[bq];W[im];B[gn];W[gl];B[fm];W[dr];B[cn];W[co];B[bo];W[dn];B[cm];W[dm];B[fl];W[cl];B[bl];W[fk];B[el];W[dl];B[ek];W[bk];B[bm];W[di];B[gk];W[dh];B[fj];W[cg];B[mh];W[le];B[ln];W[ki];B[kh];W[jh];B[kg];W[li];B[mg];W[kc];B[mc];W[nb];B[ji];W[jj];B[ii];W[kd];B[mf];W[ne];B[gc];W[ij];B[ic];W[jb];B[je];W[ke];B[dd];W[dc];B[fe];W[jf];B[he];W[fd];B[ed];W[fc];B[if];W[ge];B[gf];W[ee];B[gd];W[ef];B[cj];W[ci];B[bj];W[dj];B[ck];W[dk];B[bi];W[bh];B[mm];W[nl];B[nn];W[hi];B[ih];W[hh];B[jg];W[hk];B[hl];W[il];B[ib];W[lb];B[kr];W[ir];B[fb];W[eb];B[gb])(;W[om];B[pl];W[ol];TR[qk]B[pk]))(;GM[1]FF[4]SZ[19]AP[Sabaki:0.52.2]CA[UTF-8]GN[37 tsumego advice problem 1]DT[2020-11-24]KM[-7.5]RU[Simple]AB[do:eo][ep][gp][dq][fq]AW[cm][co:cp][dp][fp][eq:er]AE[kb:lb][nb:pb][lc:mc][ko:lo][qo][ap:bp][hp:hr][jp][lp:op][rp:rr][bq:br][nq][qq][fr][or]PL[B]C[page 37
advice for doing tsumego - part seven

problem 1 from part six in BGJ 199
Black to play]SO[bgj 200](;B[fo]PL[W](;W[dr]LB[kq:A][hq:B])(;W[];B[dr];W[fr];B[gr]))(;B[fr];W[dr];B[fo])(;B[dr];W[fr](;B[gq];W[gr](;B[hr];W[hq];B[ir];W[fo];B[en];W[fn])(;B[bq];W[cq];B[cr];W[br];B[bs];W[ar];B[aq];W[ds];B[as];W[br];B[ar];W[es]))(;B[fo];W[gr];B[bq];W[cq];B[cr];W[br];B[bs];W[ar];B[aq];W[ds];B[as];W[br];B[ar];W[es])))(;GM[1]FF[4]SZ[19]AP[Sabaki:0.52.2]CA[UTF-8]GN[38 tsumego advice problem 2]DT[2020-11-24]KM[-7.5]RU[Simple]AB[co][eo:fo][dp][bq:cq][gq][jq]AW[ep:eq][gp][dq][hq][cr]AE[bb:bd][eb:fb][hb:hd][ob:oc][pb][rb][ad][cd:gd][nd][pd:qd][ce][le][qe][qg]PL[B]SO[bgj 200u]C[page 38
advice for doing tsumego - part seven

problem 2 from part six in BGJ 199
Black to play](;B[gr];W[hr];B[hp];W[fq];B[go];W[fp];B[iq];W[fr])(;B[fp];W[fq];B[gr];W[hr]))(;GM[1]FF[4]SZ[19]AP[Sabaki:0.52.2]CA[UTF-8]GN[39 tsumego advice problem 3]DT[2020-11-24]KM[-7.5]RU[Simple]AB[bp:fp][bq][fq:fr]AW[cq:eq][ar:br][cs]AE[bb:bd][eb:ec][lb:ld][nb:ob][rb:rd][cc][hc][md:qd][sd][he][qe]PL[B]LB[er:A][dr:B][es:C][ds:D]MA[cr]C[page 39
advice for doing tsumego - part seven

problem 3
Black to play]SO[bgj 200](;B[dr];W[er];B[es](;W[ds];B[cr])(;W[cr]))(;W[dr];B[es]PL[B];B[ds];TR[iq][ks]AE[jo:ko]AW[jq:kq][ir:is][kr][js]AB[ip:mp][iq][mq:ms][ks:ls])(;B[ds];W[es])(;B[es](;W[dr];B[ds])(;W[ds](;B[dr])(;B[er];W[dr]))(;W[er];B[ds]))(;W[er];B[es]PL[B];B[ds])(;W[ds];B[er]PL[B];B[dr])(;B[er];W[dr];B[es];W[ds]))(;GM[1]FF[4]SZ[19]AP[Sabaki:0.52.2]CA[UTF-8]GN[41 tsumego advice problem 4]DT[2020-11-24]KM[-7.5]RU[Simple]AB[cp:fp][bq:br][fq][hq:iq][ir]AW[cq:eq][fr:hr][es]AE[bb:bd][eb:ec][lb:ld][nb:ob][rb:rd][cc][hc][md:qd][sd][he][qe][ar][cs]PL[B]SO[bgj 200]C[page 41
advice for doing tsumego - part seven

problem 4
Black to play];B[cs];W[ds];B[dr];W[is];B[kr])(;GM[1]FF[4]SZ[19]AP[Sabaki:0.52.2]CA[UTF-8]GN[41 advice for tsumego problem 5]DT[2020-11-24]KM[-7.5]RU[Simple]AB[bo:fo][bp][fp:fq][ar]AW[cp:ep][aq:bq][cr][bs]AE[bb:bd][eb:fb][hb:hd][ob:oc][rb:rd][lc][qc][ad][cd:gd][ce][le][oq:qq][lr:nr][sr][os][qs]PL[B]C[page 41
advice for doing tsumego - part seven

problem 5
Black to play]SO[bgj 200](;B[dr];W[er];B[eq];W[dq];B[cq])(;B[er];W[dr];B[dq];W[ds]))(;GM[1]FF[4]SZ[19]AP[Sabaki:0.52.2]CA[UTF-8]GN[42 advice for tsumego problem 6]DT[2020-11-24]RU[Simple]AB[bp:cp][cq]AW[bo:do][dp:dq]AE[bb:bd][eb:ec][lb:ld][nb:ob][rb:rd][cc][hc][md:qd][sd][he][qe][op][qp][eq][nq:ns][pq:pr][sq][ar][fr:hr][qr:rr][cs][es][rs]PL[B]C[page 42
advice for doing tsumego - part seven

problem 6
to be discussed in part eight
Black to play]SO[bgj 200])(;GM[1]FF[4]SZ[19]AP[Sabaki:0.52.2]CA[UTF-8]GN[42 advice for tsumego problem 7]DT[2020-11-24]RU[Simple]AB[cp:fp][fq][hq]AW[cq:eq]AE[da:dh][qa:qb][bb:cb][sb][ec][pc:pe][rc][be:bf][bh:ch][cl][el][rl:rn][bo:co][qo:qq][so][sq][br:dr][rs]PL[B]C[page 42
advice for doing tsumego - part seven

problem 7
to be discussed in part eight
Black to play])