(;
AB[no][oo][po][qo][lp][lq][lr][ls][mp][rp][rq][rr][rs][pq][or]
AW[op][pp][qp][mq][mr][ms][nq][qq][qr][qs][ps]
C[Black plays.]
(;
B[oq]
C[Black makes a "bad" empty triangle shape, but now White has problems.]
(;
W[np]
C[White connects, hoping for a seki.]
(;
B[pr]
PL[B]
C[Although Black makes an even worse "square" shape, White can now do no better than tenuki.];
B[os]
PL[B]
C[If Black loses outside liberties and is forced to remove White's stones before the end of the game, Black can create a bulky-5, and ...];
B[nr]
C[... finally, Black can atari while creating a rabbity-6.  White is dead.]
)
    (;
    B[nr]
    C[A mistake.  Move order is important.];
    W[pr]
    C[White has a seki.]
    )
)
    (;
    W[os]
    C[Trying to ruin Black's shape here doesn't work either.];
    B[np]
    C[White cannot atari the 3 stones, and Black can atari the 4 stones next.]
    )
)
    (;
    B[np]
    C[Squeezing from the outside is often the correct approach, but not with this problem.];
    W[oq];B[pr];W[nr]
    C[White captures the stones to make eyes.]
    )
)

