White has just played hamete at 'h3'. How should Black respond?
Solution follows.]
GameName[17hamete]
(
;
AddEmpty[gq][gp][hq]
;
White[gp]
;
Black[gq]
;
White[hq]
KO[]
)
(
;
(
;
Black[fq]
Comment[Black at 'f3' is mundane. White is happy to connect easily at 'h4'.]
;
White[hp]
Comment[White succeeds in separating Black into two unstable groups.]
)
(
;
Black[hp]
Comment[Black one at 'h4' is the first correct response.]
(
;
White[go]
(
;
Black[fq]
Comment[However, Black at 'f3' is a wrong follow-up play.]
;
White[ip]
;
Black[hr]
;
White[ho]
Letter[en][bp]
Comment[With this exchange White has succeeds in pushing the Black group toward the edge. Later White will be able to play either at 'e6', creating a large wall, or reducing the corner further by playing at 'b4'.]
)
(
;
Black[fo]
Comment[Black at 'f5' is wrong as well . However, before considering playing this hamete, White must first see if the ladder will be in his favor. ]
;
White[ip]
;
Black[ho]
;
White[gn]
;
Black[iq]
;
White[hr]
Comment[After this sequence, White can do one of two things. First, he might capture the Black stone at 'g2'. Otherwise, he might capture the two Black stones at 'h4' and 'h5' with a play at 'j5', assuming a favorable ladder.]
)
(
;
Black[ho]
Comment[Black at 'h5' is the correct follow-up play.]
;
White[fq]
;
Black[gr]
(
;
White[gn]
;
Black[fr]
;
White[hn]
;
Black[jo]
Comment[With this exchange Black succeeds in maintaining a well-balanced postion.]
)
(
;
White[eq]
Comment[What happens when White plays at 'e3', instead of White 'g6'?]
;
Black[gn]
Comment[Black at 'g6' is a correct play. The following sequence -- immediately obvious to a seasoned dan player -- produces a very powerful wall for Black.]
;
White[fo]
;
Black[ep]
;
White[hr]
;
Black[fn]
;
White[eo]
;
Black[dn]
;
White[fr]
;
Black[do]
;
White[gs]
;
Black[gq]
;
White[gr]
;
Black[cm]
Comment[This sequence destroys White's shape; White is too over-concentrated.
Black should not fear a White cut at 'h6'.]
;
White[hn]
;
Black[jo]
Comment[Black at 'k5' is tesuji, in response to the White cut.]
(
;
White[hm]
Comment[If White extends at 'h7', the lower White group dies.]
;
Black[dr]
Comment[White is dead?]
)
(
;
White[cq]
Comment[Suppose White protects first by playing 'c3'?]
;
Black[en]
;
White[gq]
;
Black[hm]
;
White[in]
;
Black[jm]
Comment[Black still maintains a healthy position on the outside. It would be
foolish for White to continue with the cutting stone.]
)
)
(
;
White[ep]
Comment[How about White at 'e4' instead?]
;
Black[fo]
;
White[eo]
;
Black[gn]
;
White[dq]
Comment[At this juncture you might think the position is good or even for
White. However, Black still has a few tesuji left.]
;
Black[cq]
(
;
White[cp]
Comment[If White plays at 'c4' then Black will live in the corner.]
;
Black[dr]
;
White[do]
;
Black[bq]
;
White[er]
;
Black[cs]
Comment[Black lives?]
)
(
;
White[dr]
Comment[(Difficult) What happens when White plays at 'd2' first?]
;
Black[bn]
Comment[Black at 'b6' is a surprise tesuji!]
;
White[bo]
;
Black[co]
;
White[do]
;
Black[cp]
;
White[bm]
;
Black[dn]
;
White[cm]
;
Black[en]
;
White[eq]
;
Black[cr]
Comment[White is in tears.]
)
)
)
)
(
;
White[ip]
Comment[White at 'j4' instead of 'g5'-extension, is also not very good for White.]
;
Black[go]
;
White[iq]
;
Black[io]
;
White[jp]
;
Black[jo]
;
White[kp]
;
Black[co]
Comment[Black has a very strong position along with his reasonable territory.]
