Here is an interesting game, a masterpiece, in fact.

I have already posted it with TV sportscaster-like comments, but I have added several comments aimed at beginners. The earlier comments are marked with ***, the beginner comments with *. You may find it helpful.
(;CA[ISO8859-1]SZ[19]AP[GOWrite:2.2.21]ST[2]FF[4]GM[1]PC[Edo Castle]DT[1820-01-02 (Bunsei 2 XI 17)]EV[Castle game]GC[Genjo's lifetime masterpiece. Another source has date Bunsei 3 XI. We follow O-Shiro Go.]C[***Inoue Ansetsu later took the name, Inoue Gennan Inseki as head of the Inoue house. Though nominally 5 dan at the time of this game, he was recognized as having 7 dan strength, and everybody expected a short game with a courteous resignation. But Genjo not only raised the level of his game, he made it seem easy.]RE[B+1]PW[Honinbo Genjo]AB[dp][pd]PB[Inoue Ansetsu]FG[259:]WR[8d]GN[ ]US[GoGoD95]PM[0]BR[5d]HA[2]
;C[* White starts in an empty corner. The saying goes, Corners, Sides, Center.]W[cd]
;B[qp]
;C[* Now White approaches the corner, preventing a Black enclosure. This Knight's approach is the most common one to the 3-4 stone.]W[oq]
;B[ec]
;C[* White pincers Black's approach.]W[gc]
;B[mq]
;C[* Now White approaches another corner. Note that, even though there are six spaces between this stone and the White pincer, they work together.]W[nc]
;B[op]C[* Usually you do not attach to a stone you are attacking, but it is a common follow-up to a pincer. Black is happy for both sides to get stronger, here.]
;W[pp]
;B[po]
;W[pq]
;B[np]C[* Black confines White to the corner in exchange for outside strength. This is usually good, especially in the opening.]
;W[qq]
;B[ro]C[* This is a nice play to protect the cutting point at R-05. OC, it threatens the hane at S-03.]
;W[rp]
;B[qo]C[* The White atari strengthens Black, but it allows White to answer S-03 with an atari at S-02, and then descend to T-02 and live.]
;C[*** Note that Genjo does not approach from the wider side. Why make the game easy for Black?]W[fq]
;B[nd]C[* Black builds strength to work with the wall in the bottom right.]
;W[md]
;B[ne]
;C[*** Looking to invade the right side,White does not want to strengthen Black too much.]W[ob]
;B[pb]
;W[pc]
;B[qc]
;W[oc]
;B[qb]
;C[* White builds strength to work with the White pincer stone. Note that a Black play here would also be big.]W[me]
;B[mf]C[* The proverb say to hane at the head of two stones.]
;C[* White plays a wedge between the Black positions, playing closer to the weaker one.]W[qi]
;B[qe]
;C[* Threatening to push through, leaving Black's center stones floating.]W[pf]
;B[od]C[* Protects against White's threat and threatens to cut at N-17.]
;C[* Protects the cut efficiently. See variation for next.]W[kc]
(
;B[qk]C[*** Black chooses to attack the two stones instead of the single stone. After all, this is where Black is strong, and allowing White to make easy life here would kill Black's influence. But there is more to it than that, as we shall see.]
;C[* The saying is, a one space jump is never bad.]W[oi]
;B[kd]C[*** Black attacks this group, as well. Did you see this move? I didn't.]
;W[ld]
;B[jc]
;W[kb]
;B[ke]
;W[lf]
;B[mg]C[*** Ah! A splitting attack.]
;C[*** White is very busy. Black threatens to run with the single stone, as well. Black's play is masterful.]W[fd]
;B[pj]C[*** Make heavy.
* If Black does not play here early, later on White might sacrifice the stone on R-11. Black aims to make it baggage for White.]
;W[pi]
;B[rg]C[*** Take away the base.]
;C[*** Big.
* It is easy to underestimate the value of the turn facing the center, since it is hard to make territory in the center.]W[oj]
;B[hc]C[*** Hmmm. What is Black up to?]
;W[gb]
;B[mj]C[*** Topping the tree.
* This capping play makes it difficult for White to run to relative safety in the center.]
;W[pk]
;B[ql]C[*** Who cares about a single stone?]
;W[nk]
;B[de]C[*** Black does not want this stone to die a dog's death. Black is dictating the pace of play. How deeply has he seen?]
;W[dd]
;B[mb]C[*** Switching the attack back to this group.
* Note that if White played here he would easily have two eyes.]
;W[mc]
;B[ol]C[*** Vital point.
* Plays on the diagonal are good for making or preventing eyes. This play also threatens the cut at P-09, preventing a possible eye if White captures the stone on Q-10.]
;C[* White pushes into the center.]W[mk]
;B[lj]C[* The Black stone is strengthened.]
;W[lk]
;B[kk]C[*** Black keeps up the pressure.]
;W[kl]
;B[jl]C[*** More pressure.
* This play is called a two step hane. Despite the fact that it has two cuts, it can be very strong.]
;W[km]
;B[mm]C[*** The eye stealing tesuji.
* If White played here he would have an eye at M-08.]
;C[*** Not so fast, buster!]W[mn]
;B[nm]
;W[lm]
;B[jk]C[*** Big.]
;C[*** Also big.
* Either player has a knight's move to this point. The saying is, Don't let a double knight's move get away.]W[in]
;B[lb]C[*** Where is White's second eye?
* Just capturing the Black stones will make only one eye.]
;W[jb]
;B[ed]C[*** Can't Black figure out where to play? {hehe}]
;W[ee]
;B[fe]
;W[ef]
;B[gd]
;W[fc]
;B[ib]C[*** All part of the plan.]
;W[jd]
;B[je]C[*** And what a plan!]
;W[id]
;B[hd]C[*** Thank you.]
;W[ie]
;B[if]
;W[he]
;B[ge]C[*** Thanks again.]
;W[hf]
;B[hg]
;W[jf]
;B[gf]C[*** Please.]
;C[*** If you insist.]W[ig]
;B[ic]C[*** I do.]
;C[*** As you wish.]W[if]
;B[eb]C[*** I'll take these ripe bananas, thank you.]
;C[*** I like this one.
* For White to capture this stone would be big.]W[gg]
;B[lc]C[*** Well, I like these.]
;C[*** Not so fast.]W[kf]
;B[hh]C[*** Same to you.
* Saving the stone, at least for now.]
;C[*** Big.
* Letting Black capture the G-13 stone in a ladder would be terrible.]W[fg]
;B[ja]C[*** The time has come, the Walrus said.]
;W[le]
;B[ka]
;C[* White still has made only one eye.]W[kd]
;B[fb]C[*** Thank you very much. People may have asked, where is Black going to make territory from his thickness? Would you have guessed the top left side and corner? And the fight is not yet over.
* Thickness refers to the Black wall in the bottom right corner. It has influenced the whole fighting so far.]
;W[di]
(
;B[ii]C[*** This play has been criticized. See variation.]
;C[*** White skillfully makes another eye.]W[ki]
;B[kj]
;W[ji]
;B[mh]C[*** With sente.]
;W[qg]
;B[og]C[* Again, a play on the diagonal to prevent an eye -- as well as protecting against the cut at O-14.]
;C[* This double approach attacks the Black stone on D-04 while extending the White framework on the left side.]W[dn]
;B[rq]
;W[rr]
;B[sp]
;W[sr]
;B[gp]C[*** Still a good attacking play.]
;W[eo]
;B[hm]C[*** This is good, too.]
;W[rh]
;B[rf]
;W[rj]
;B[cf]
;W[ce]
;B[dq]
;W[co]
;B[fp]
;W[bq]
;B[ok]
;W[nj]
;B[ko]C[*** The eye stealing tesuji again.]
;W[pg]
;B[df]
;W[dg]
;B[oh]
;W[ph]
;B[rk]
;C[*** Small life.]W[si]
;B[bf]C[* Why is Black playing this? It looks difficult to live here.]
;W[cg]
;B[do]
;W[cm]
;B[bc]C[* Ah! He played to sacrifice four stones.]
;W[be]
;B[en]
;W[hp]
;B[hq]
;W[gq]
;B[ho]
;W[ip]
;B[nr]
;W[or]
;B[dm]
;W[cn]
;B[hr]
;W[em]
;B[fn]
;W[cr]
;B[fm]
;W[el]
;B[dr]
;W[iq]
;B[kp]
;W[lr]
;B[kr]
;W[kq]
;B[jr]
;W[gk]
;B[hk]
;C[*** Watch the fireworks here.]W[ir]
;B[ps]
;W[os]
;B[qr]
;W[pr]
;B[eq]
;W[lq]
;B[lp]
;W[gr]
;B[ls]
;W[fs]
;B[er]
;W[hs]
;B[fr]C[*** No, you may not.]
;W[hn]
;B[go]
;W[gl]
;B[io]
;W[jq]
;B[nq]
;C[*** Let's make a deal.]W[js]
;B[ns]C[***OK. End of comments.]
;W[db]
;B[dc]
;W[cc]
;B[cb]
;W[bb]
;B[da]
;W[ac]
;B[ba]
;W[ab]
;B[la]
;W[gj]
;B[fl]
;W[fk]
;B[gi]
;W[ih]
;B[hj]
;W[fi]
;B[kh]
;W[kg]
;B[jm]
;W[qj]
;B[ln]
;W[kn]
;B[jn]
;W[lo]
;B[mo]
;W[sk]
;B[ln]
;W[pl]
;B[pm]
;W[pj]
;B[rm]
;W[lo]
;B[ek]
;W[dl]
;B[ln]
;W[ha]
;B[ia]
;W[lo]
;B[br]
;W[bs]
;B[ln]
;W[ll]
;B[of]
;W[lo]
;B[jj]
;W[lh]
;B[li]
;W[jh]
;B[ln]
;W[gh]
;B[hi]
;W[lo]
;B[ms]
;W[ks]
;B[ln]
;W[pa]
;B[qa]
;W[lo]
;B[eh]
;W[eg]
;B[ln]
;W[nl]
;B[om]
;W[lo]
;B[cq]
;W[ar]
;B[ln]
;W[sl]
;B[nn]
;W[ni]
;B[na]
;W[oa]
;B[nb]
;W[nh]
;B[ng]
;W[sm]
;B[sn]
;W[hl]
;B[il]
;W[gm]
;B[gn]
;W[fj]
;B[cp]
;W[bp]
;B[ds]
;W[cs]
;B[jp]
;W[sg]
;B[pe]
;W[qf]
;B[se]
;W[lg]
)
(
;B[gp]C[*** This play attacks both the single stone and the right side group. Call it a leaning attack or splitting attack.]
)
)
(
;B[mc]C[* If Black cuts, . . . ]
;W[mb]
;B[lc]
;W[ld]
;B[lb]
;W[kb]
;B[la]
;W[ka]
;B[ma]
;C[* White captures in a ladder.]W[na]
)
)