(;B[pd]SZ[19]C[Polish Go Championship League, 1991
Round 5, 16.11.1991
White: Jerzy Rybka, 2-dan
Black: Mariusz Ferenc, 3-dan
Black wins by 2 1/2 points. 
Commentary by Kano Yoshinori 9-dan, translated by Krzysztof Grabowski.
Recorded by Krzysztof Grabowski using GoScribe 2.0 
];W[dc];B[pp];W[cq];B[dp]C[Black 5 is premature. It is good when White has extensions in both sides
from his 3-3 stone. 
];W[cp];B[do];W[er];B[gp];W[bn];B[dl];W[nc]
;B[pf];W[jd]
(;B[qj]C[After the sequence at the lower left corner Black 15 should be at 'a'. 
];W[nq];B[lq];W[lp];B[kp];W[mp];B[jq];W[ln];B[pn];W[ko];B[jo];W[jn];B[io]C[  After the sequence to 27 Black is over-concentrated and White has a strong
  wall. 
]

(;W[oj]C[  White 28 at 'a' is bigger. 
];B[de];W[fd];B[cc];W[cb];B[cd];W[eb]
(;B[ci]C[  Black 35 should be at 'a'. Black cannot get much territory on the left side
  as it is open at the bottom. 
];W[qk];B[pk];W[pj];B[ql]
(;W[qi]C[  White 40 should be at 'a'. 
];B[rk];W[rj];B[qk];W[ph];B[me];W[qc];B[pc];W[pb];B[ob];W[rb];B[pa];W[qb]
;B[oc];W[rf];B[lc];W[kc]
(;B[mc]C[  Black 57 should be at 'a'. 
];W[qq];B[pq];W[pr];B[qp];W[rr];B[rq];W[qr];B[hd];W[ef];B[dg]
(;W[jf]C[  White 68 is weak. It should be at 'a'. 
];B[hf];W[eg];B[ic];W[kb];B[hh];W[lf];B[mf];W[jh]
(;B[ee]C[  Later, Black could prefere to play at 1 here. 
])
(;B[qd];W[rd];B[lq];W[mg];B[ng];W[kq];B[ke];W[je];B[kd];W[jc];B[lq];W[ch];B[bh]
;W[kq];B[mk];W[ll];B[lq];W[bg];B[bi];W[kq];B[cm];W[bm];B[lq];W[bf];B[ce];W[kq]
;B[bk];W[bl];B[lq];W[aj];B[bj];W[kq];B[jr];W[jp];B[ip];W[ak];B[be];W[om];B[jl]
;W[kl];B[rp];W[ok];B[nj];W[ri];B[mi];W[on];B[oo];W[pm];B[qm];W[nk];B[mj];W[no]
;B[ml];W[mm];B[qn];W[gi];B[hi];W[sr];B[oq];W[or];B[gb];W[hb];B[ha];W[fb];B[ga]
;W[go];B[fo];W[cn];B[dn];W[jk];B[il];W[le];B[ld];W[lb];B[mb];W[lk];B[oi];W[pi]
;B[gd];W[fc];B[gj];W[fj];B[kp];W[dj];B[af];W[jp];B[ca];W[da];B[kp];W[fa];B[ia]
;W[jp];B[km];W[kn];B[kp];W[ge];B[he]C[  Moves after Black 253 omitted.
  
  Black wins by 2 1/2 points. 
]))))))))