YCH Tesuji vol. 5 was kind of an up and down. Several problems I had seen already (many times), so I could breeze through them. Others were unsolvable for me ^^ And a lot of variation mistakes of course.
Still quite happy that I could solve more problems than on the first try.
YCH L&D vol. 4 is next.
(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]
RU[Japanese]SZ[19]HA[2]KM[0.50]TM[600]OT[5x20 byo-yomi]
PW[Me]PB[Opponent]WR[1d]BR[2k]DT[2013-10-04]PC[The KGS Go Server at
http://www.gokgs.com/]AB[pd][dp]RE[W+Time]
;W[qp]WL[599.149]
;B[cc]BL[577.564]
;W[fq]WL[595.613]
;B[cn]BL[567.403]
;W[qf]WL[593.766]
;B[qc]BL[556.286]
;W[pj]WL[578.834]LB[md:B][nd:A]C[White can also play at A or B directly to "punish" Black.]
;B[hq]BL[546.61]
;W[fo]WL[567.275]LB[md:E][nd:D][cq:B][dq:A][jq:C]C[This move is plain wrong, leads to an one-sided-fight and ultimatively to a huge loss for White.
Locally, White's only sensible choices are A to C. E or D at the top right are big as well.
C would work towards a framework and seems to be preferable.]
;B[dr]BL[527.888]
;W[er]WL[546.902]LB[jq:A]C[Heavy although consistent. A would be okay as well to cut the losses.]
;B[eq]BL[511.616]
;W[fr]WL[544.949]
;B[ho]BL[486.261]
;W[fm]WL[540.439]
;B[lq]BL[478.195]
;W[oq]WL[529.696]LB[cl:A][dm:B]C[Maybe too slow albeit big.
A seems a little bit too much "handicap-style" but just making shape with B seems to give Black too much. White already lost the initiative.]
;B[dk]BL[424.53]
;W[jq]WL[496.636]
;B[kp]BL[387.029]
;W[hr]WL[474.348]
;B[iq]BL[334.916]
;W[ir]WL[472.109]
;B[jp]BL[331.275]
;W[kr]WL[467.4]
;B[fp]BL[271.089]C[Good move.]
;W[gp]WL[464.655]
;B[ep]BL[268.231]
;W[gq]WL[462.567]
;B[go]BL[264.941]
;W[hp]WL[392.416]
;B[io]BL[247.929]C[Good.
Around ten points for White vs. the huge influence Black got. White's opening was a disaster.]
;W[ci]WL[388.349]
;B[fk]BL[213.526]
;W[cf]WL[367.985]C[Seems easy on Black but White needs to be patient for now.]
;B[dd]BL[180.812]LB[jc:B][md:D][nd:C][bk:A]C[Both A and B are huge now. I feel A might be bigger because of several follow-ups against the corner or to use the two White stones.
White still got D or C to play against the upper right corner, so he should not fear a Black framework.]
;W[jc]WL[362.895]
;B[hc]BL[172.292]
;W[mc]WL[360.812]
;B[oc]BL[160.365]
;W[je]WL[345.227]LB[bk:A]C[Solid but maybe too slow. A is huge.]
;B[bk]BL[145.733]
;W[bd]WL[260.173]
;B[bc]BL[135.555]
;W[fd]WL[236.08]LB[df:A]C[Overplay.
Just Black A and White is close to resigning.]
;B[he]BL[72.531]
;W[gd]WL[207.776]
;B[hd]BL[67.503]
;W[ff]WL[192.947]C[Now White has a chance to come back in the game.]
;B[hg]BL[46.559]
;W[fh]WL[153.936]
;B[kd]BL[11.241]
;W[jd]WL[150.24]
;B[kc]BL[20]OB[5]LB[lb:A][md:B]C[Wrong.
Black has either A or B. This move lets White set up a squeeze.]
;W[ke]WL[128.134]
;B[ld]BL[20]OB[4]
;W[kb]WL[119.77]
;B[lb]BL[20]OB[4]
;W[ib]WL[69.126]
;B[ka]BL[20]OB[4]
;W[jb]WL[66.249]
;B[md]BL[20]OB[4]
;W[hi]WL[24.368]C[When White manages to get a Moyo on the right through this attack, the game could be even again.]
;B[ih]BL[20]OB[3]
;W[kh]WL[16.068]C[Good direction.]
;B[ii]BL[20]OB[3]
;W[hj]WL[11.428]
;B[ij]BL[20]OB[3]
;W[hk]WL[20]OW[5]
;B[gl]BL[20]OB[2]
;W[ik]WL[20]OW[5]LB[kj:A]C[Wrong, too aggressive.
Hurts the right side and White cannot hope to kill Black. Just A to develop the right seems the better direction.]
;B[kj]BL[20]OB[2]
;W[jk]WL[20]OW[5]
;B[ki]BL[20]OB[2]
;W[lh]WL[20]OW[5]
;B[kk]BL[20]OB[2]
;W[of]WL[20]OW[5]
;B[km]BL[20]OB[1]
;W[ce]WL[20]OW[5]
;B[ec]BL[20]OB[1]
;W[fb]WL[20]OW[5]
;B[eb]BL[20]OB[1]
;W[gb]WL[20]OW[5]
;B[cd]BL[20]OB[1]
;W[be]WL[20]OW[5]
;B[db]BL[20]OB[1]
;W[ej]WL[20]OW[5]
;B[ek]BL[20]OB[1]
;W[pm]WL[20]OW[4]TR[ki][kj][kk]C[If White can hold the right side, he wins. But Black has already some strong stones in the center so it is unlikely that White can kill an invasion.]
;B[qj]BL[20]OB[1]
;W[qi]WL[20]OW[4]
;B[qk]BL[20]OB[1]
;W[pi]WL[20]OW[4]
;B[qm]BL[20]OB[1]
;W[pl]WL[20]OW[4]
;B[rn]BL[20]OB[1]LB[qo:A]C[Too slow. A is better to make shape.]
;W[ro]WL[20]OW[4]
;B[pn]BL[20]OB[1]
;W[on]WL[20]OW[4]LB[fd:C][je:B][ik:D][fo:A]TR[bk]C[It's not an easy fight for Black, giving that he takes two stones but he should be able to live.
A was by far the biggest mistake White made. After that the game was very favourable for Black.
B might be too slow, when playing from behind.
C was simply an overplay and could have been easily punished but Black chose to give White his last chance.
D was the wrong direction and lastly gave the game away.])