(;GM[1]FF[3]
RU[New Zealand]SZ[5]HA[0]KM[0]
PW[White]
PB[Black]
GN[White (W) vs. Black (B)]
DT[1998-01-02]
SY[Cgoban 1.9.1]TM[-]
C[play starts on an empty board.
this is a small one formed by 5x5 lines.
the standard size is 19x19, while 9x9 is most suitable for beginners.
]
;B[bd]
C[the players alternate placing a stone on an empty intersection,
starting with black, aiming to control as large a part of the board
as possible.
stones, once placed, cannot be moved, but can be captured when
tightly surrounded, as will be shown later in the game.
]
;W[cc]
C[white takes the attractive centre point,  nicely distributing
its influence all over the board.
]
;B[cd]
C[black pushes against the white stone in order to expand
its own territory along the bottom edge.
]
;W[dd]
C[white resolutely stops black from expanding any farther
in this direction.
]
;B[bc]C[therefore, black now proceeds in another direction.
];W[cb]
C[white makes a more modest retreat, not wanting  to leave
too many holes in its defense.
]
;B[de]
C[black threatens to cut off one of white's stones
with a followup move at d3.
]
;W[ed]C[white defends against this.
];B[bb]
C[again, black expands his territory along the left side.
];W[ba]
C[while white blocks it.
]
(;B[ce]C[black minimizes loss to 1 pt
]
(;W[eb]C[simple 1pt win is best for white
];B[ab];W[ca];B[ad];W[aa];
B[ee]TW[da][ea][db][dc][ec]TB[ac][ae][be]
C[The game is over.  Final score:
   White = 5 empty surrounded + 8 living stones  = 13
   Black = 3 empty surrounded + 9 living stones  = 12
White wins by 1.
])

(;W[ab]C[this only leads to a jigo.
];B[ac];W[ae];B[da]
C[black gets a jigo on both white responses
]
(;W[ca]C[white's best defense, giving jigo.
];B[db];W[dc];B[eb];W[ec];
B[ee];W[ea];B[db]
(;W[ad]
(;B[aa];W[tt];B[tt]TB[ab]
C[The game is over.  Final score:
   White = 0 empty surrounded + 11 living stones  = 11
   Black = 1 empty surrounded + 10 living stones  = 11
Jigo (Tie game).
])

(;B[be]C[this is a big mistake...
];W[ad];B[aa]
C[when suicide is allowed!
];W[ae];B[da];W[ab];B[eb];W[ea]
C[superko prohibits black from playing D4, so he loses all.
])
)

(;W[tt]C[this is terrible for w because of a later black suicide
];
B[da];W[tt];B[aa];W[eb];B[da];W[ab];B[db]C[w is toast.
];W[ad];B[aa];
W[tt];B[da]C[w loses all.
])
)

(;W[db]C[now w loses by 3.
];B[ca];W[ea];B[ca]
(;W[ec]C[
];B[aa];W[da];B[ba];W[ee];B[tt];W[tt]TW[eb][dc]
TB[ab][ad][ae][be]
C[The game is over.  Final score:
   White = 2 territory + 9 living stones + 0 dame + 0 komi = 11
   Black = 4 territory + 10 living stones + 0 dame = 14
Black wins by 3.
])

(;W[da];B[ec]
(;W[dc];B[aa]C[
];W[ca];B[ee];W[ab];B[eb]C[w is toast.
])

(;W[aa];B[ca];W[ba];B[aa];W[ab]
C[prohibited under positional superko, but hopeless anyway:(
];B[ee];
W[dc];B[aa]C[w is toast.
])
)
)
)
)

(;B[da]
C[black wants a piece of the upper right part too.
if black doesn't transpose back with c1, w can win by 2.
]
;W[ca]C[white prevents being cut.
];B[db]
C[black makes some more space,
];W[dc]
C[forcing white to defend against the cut.
]
(;B[ce]
C[black needs to come back here now to limit the loss
to 1 pt, see transposition for D5.
])

(;B[eb]
C[and makes a small territory in the corner, which would
be worth 4 points if left standing until the end of the game.
]
(;W[ce]C[white takes an important liberty from black.
];B[ab]
C[black first threatens to occupy A5, which would
make it impossible for white to attack the other black group.
]
;W[ec]
C[so white attacks it at once. it is now completely surrounded on
the outside, but capture requires all adjacent empty points (called liberties)
to be occupied, so white have to play another stone at E5.
if white were to play E5 instead of E3, then it would be without liberties,
while black would still have one liberty at E3. that would result in its own capture,
in other words, it would be a suicide move.
]
;B[be]C[the first capture of the game!
];W[ad];B[aa]
C[black puts the white group in atari,
meaning it takes its next to last liberty, threatening to capture
it on the next move,
]
;W[ea]
C[white of course proceeds to capture the black group,
which had been in atari for a while. since it couldn't escape anyway,
there was no reason to actually bother capturing it, until now.
]
;B[db]C[and black takes an important liberty from white.
];W[ee]
C[white adds another point to her territory.
];B[da]
C[necessary to avoid suicidal kill after white a3.
while black continues to take liberties from white,
even at the expense of putting his own stones into atari!
]
;W[ce]
C[white captures a stone, which apparently black could recapture
immediately,  that could lead to a potentially endless capturing
back and forth. fortunately there's a so called superko rule that forbids
repetition of whole-board position. so black cannot recapture now.
]
(;B[eb]
C[black captures here in order to change the board position.
];
W[ea];B[db];W[ac]C[
necessary to avoid suicidal kill.
];B[de];W[tt];
B[tt]TB[ce]
C[The game is over.  Final score:
   White = 0 territory + 12 living stones + 1.5 dame + 0 komi = 13.5
   Black = 1 territory + 9 living stones + 1.5 dame = 11.5
White wins by 2.
])
(;B[tt];W[tt]TW[de]
C[The game is over.  Final score:
   White = 1 empty surrounded + 12 living stones  = 13
   Black = 0 empty surrounded + 9 living stones  = 9
White wins by 4.
])

)

(;W[ab]C[this is the wrong side; black can get a jigo.
];B[ac]
(;W[ec];B[ce];W[ae]
C[see transposition to D5 where black played C1 first.. b gets jigo there.
])

(;W[ce]
C[white has no time for this, since she won't be able to atari black at e3
]
;B[aa];W[ee];B[be];W[ab];B[de];W[tt];B[tt]TW[aa]TB[ea][ad][ae][ce]
C[The game is over.  Final score:
   White = 1 empty surrounded + 9 living stones  = 10
   Black = 4 empty surrounded + 10 living stones  = 14
Black wins by 4.
])
)
)
)

(;B[eb]C[this loses by  4 points
];W[ce]
(;B[db]C[also loses by 4.
];W[dc]C[d5 is key now.
]
(;B[da];W[ca];B[ab]C[see transposition for E4; W+4
])

(;B[ab];W[da];B[be];W[ad];B[aa];W[ca];B[ea];W[ac];B[tt];W[ec];B[eb];
W[ee];B[tt];W[ce];B[ae];W[ad];B[de];W[ac]C[b is toast.
])
)
(;B[ab]C[b loses all
];W[db]
(;B[ec];W[ca];B[be];W[ad];B[ea];W[aa];B[tt];W[ac];B[tt];W[dc];
B[tt];W[da];B[eb];W[ee];B[tt];W[ce];B[ae];W[ac];B[de];W[ad]
C[b is toast.
])

(;B[ca];W[ec]C[black goes Arghhhhhhhhh!
])
)


(;B[da]C[b will lose all.
];W[db]
(;B[ca];W[ea];B[ca];W[ec];B[aa];W[ac]C[b is toast.
])

(;B[ec];W[ca];B[ea];W[dc];B[eb];W[ea];B[da];W[ec]C[b is toast
])
)
)

)