(;
AB[dd][jd][pd][qd][oe][of][pf][dp][pp]
AW[md][od][pe][qe][qf][pg]
C[With just a 4 stone handicap (instead of 6 in last week's problem), after White's attach-and-extend joseki, what is Black's response to White's push(1) and cut(2)?  Note that Black no longer has a stone on the marked point!

Source:
    "What's Wrong With That Move", Nakayama Noriyuki 7P
    American Go Journal, Vol. 35, No. 4, p. 50.]
LB[pe:1][od:2]
TR[pj];
B[qg]
C[The correct answer is still for Black to cut here.  But ...];
W[rg]
C[... now this hane is OK for White, because without the marked stone, Black can no longer keep White from making 2 eyes on the right side.]
TR[pj];
B[qh];W[rh];B[qi];W[rd];B[rc];W[re]
LB[sf:A][ri:B]
C[Now Black A does not kill the side group, because Black can no longer block after White's extension to B.

So what is Black's move?!]
(;
B[nd]
C[Correct direction.

The variation shows what happens if Black incorrectly tries to play the correct move from last week's problem, when Black has a stone on the marked point.]
TR[pj];
W[oc];B[nc];W[ob];B[nb];W[qc]
C[Black sacrifices the 3 corner stones!];
B[me]
C[After Black fixes the shape, Black's outside power is immeasurable, while White's corner territory is only 19 points.  Black has an overwhelming advantage.]
)
    (;
    B[oc]
    C[Now this atari from last week's problem doesn't work very well.];
    W[nd]
    (;
    B[rb]
    C[A good move to live in the corner, but ...];
    W[ng]
    C[... now White has this squeeze to make outside influence.];
    B[og];W[oh]
    C[The fight is unclear.  Black can do much better than this variation.]
    )
        (;
        B[qb]
        C[This kosumi, instead, leaves a weakness at A.  One sequence follows that shows the problem.]
        LB[pc:A];
        W[ng];B[og];W[oh];B[nh];W[nf];B[ph];W[oi];B[pj];W[ri]
        C[White has to make life on the right edge.];
        B[rj];W[qk];B[qj];W[sf];B[mh]
        C[If Black resumes the outside fight, ...];
        W[ne];B[pg];W[pc]
        C[Finally, White can hit the weakness.];
        B[qc];W[ob];B[nc];W[nb];B[mc];W[mb];B[lc];W[pb];B[lb];W[pa]
        C[Black's corner is in trouble.]
        )
    )
)

