Some material for Article 7, Clause 1.
Simple snap-back
$$B
$$ +--------------
$$ | . Y O O . . |
$$ | O O X O . . |
$$ | X X X . . . |
$$ | . . . . . . |
$$ | . . . . . . |
- Click Here To Show Diagram Code
[go]$$B
$$ +--------------
$$ | . Y O O . . |
$$ | O O X O . . |
$$ | X X X . . . |
$$ | . . . . . . |
$$ | . . . . . . |[/go]
What is the status of Black's marked stone?
$$W :w1: pass; :b2: pass
$$ +----------------------------
$$ | . X O O . . | . B O O . . |
$$ | O O X O . . | O O X O . . |
$$ | X X X . . . | X X X . . . |
$$ | . . . . . . | . . . . . . |
$$ | . . . . . . | . . . . . . |
- Click Here To Show Diagram Code
[go]$$W :w1: pass; :b2: pass
$$ +----------------------------
$$ | . X O O . . | . B O O . . |
$$ | O O X O . . | O O X O . . |
$$ | X X X . . . | X X X . . . |
$$ | . . . . . . | . . . . . . |
$$ | . . . . . . | . . . . . . |[/go]
Black's stone was not taken => "alive".
$$W :w3: pass; :b4: pass
$$ +------------------------------------------------------------------------------------
$$ | 1 Z O O . . | O M O O . . | O 2 O O . . | . # O O . . | . B O O . . | . Y O O . . |
$$ | O O X O . . | O O X O . . | O O X O . . | . . X O . . | O O X O . . | O O X O . . |
$$ | X X X . . . | X X X . . . | X X X . . . | X X X . . . | X X X . . . | X X X . . . |
$$ | . . . . . . | . . . . . . | . . . . . . | . . . . . . | . . . . . . | . . . . . . |
$$ | . . . . . . | . . . . . . | . . . . . . | . . . . . . | . . . . . . | . . . . . . |
- Click Here To Show Diagram Code
[go]$$W :w3: pass; :b4: pass
$$ +------------------------------------------------------------------------------------
$$ | 1 Z O O . . | O M O O . . | O 2 O O . . | . # O O . . | . B O O . . | . Y O O . . |
$$ | O O X O . . | O O X O . . | O O X O . . | . . X O . . | O O X O . . | O O X O . . |
$$ | X X X . . . | X X X . . . | X X X . . . | X X X . . . | X X X . . . | X X X . . . |
$$ | . . . . . . | . . . . . . | . . . . . . | . . . . . . | . . . . . . | . . . . . . |
$$ | . . . . . . | . . . . . . | . . . . . . | . . . . . . | . . . . . . | . . . . . . |[/go]
Black's stone is taken by

.
Thereafter,

is played. This is a stone that cannot be taken.

is also a "new" stone, as it cannot be played before

, because that board point is still occupied by

. => "alive".
Simple nakade
$$W
$$ +---------------+
$$ | Y Y . O X . . |
$$ | O O O O X . . |
$$ | X X X X X . . |
$$ | . . . . . . . |
$$ | . . . . . . . |
- Click Here To Show Diagram Code
[go]$$W
$$ +---------------+
$$ | Y Y . O X . . |
$$ | O O O O X . . |
$$ | X X X X X . . |
$$ | . . . . . . . |
$$ | . . . . . . . |[/go]
What is the status of Black's marked stones?
$$W :w1: pass; :b2: pass
$$ +--------------------------------
$$ | X X . O X . . | B B . O X . . |
$$ | O O O O X . . | O O O O X . . |
$$ | X X X X X . . | X X X X X . . |
$$ | . . . . . . . | . . . . . . . |
$$ | . . . . . . . | . . . . . . . |
- Click Here To Show Diagram Code
[go]$$W :w1: pass; :b2: pass
$$ +--------------------------------
$$ | X X . O X . . | B B . O X . . |
$$ | O O O O X . . | O O O O X . . |
$$ | X X X X X . . | X X X X X . . |
$$ | . . . . . . . | . . . . . . . |
$$ | . . . . . . . | . . . . . . . |[/go]
Black's stones were not taken => "alive".
$$W :w3: pass; :b4: pass
$$ +------------------------------------------------------------------------------------------------
$$ | Z Z 1 O X . . | M M O O X . . | . 2 O O X . . | . # O O X . . | B B . O X . . | X Y . O X . . |
$$ | O O O O X . . | O O O O X . . | O O O O X . . | O O O O X . . | O O O O X . . | O O O O X . . |
$$ | X X X X X . . | X X X X X . . | X X X X X . . | X X X X X . . | X X X X X . . | X X X X X . . |
$$ | . . . . . . . | . . . . . . . | . . . . . . . | . . . . . . . | . . . . . . . | . . . . . . . |
$$ | . . . . . . . | . . . . . . . | . . . . . . . | . . . . . . . | . . . . . . . | . . . . . . . |
- Click Here To Show Diagram Code
[go]$$W :w3: pass; :b4: pass
$$ +------------------------------------------------------------------------------------------------
$$ | Z Z 1 O X . . | M M O O X . . | . 2 O O X . . | . # O O X . . | B B . O X . . | X Y . O X . . |
$$ | O O O O X . . | O O O O X . . | O O O O X . . | O O O O X . . | O O O O X . . | O O O O X . . |
$$ | X X X X X . . | X X X X X . . | X X X X X . . | X X X X X . . | X X X X X . . | X X X X X . . |
$$ | . . . . . . . | . . . . . . . | . . . . . . . | . . . . . . . | . . . . . . . | . . . . . . . |
$$ | . . . . . . . | . . . . . . . | . . . . . . . | . . . . . . . | . . . . . . . | . . . . . . . |[/go]
Black's stones are taken by

.
Thereafter,

is played. This stone is not taken by White.

is also a "new" stone, as it cannot be played before

, because that board point is still occupied by

. => "alive".
$$W :w5: pass; :b6: pass
$$ +----------------------------------------------------------------------------------------------------------------
$$ | Z Z 1 O X . . | M M O O X . . | 3 2 O O X . . | O 4 O O X . . | . # . . X . . | B B . O X . . | . Y O O X . . |
$$ | O O O O X . . | O O O O X . . | O O O O X . . | O O O O X . . | . . . . X . . | O O O O X . . | O O O O X . . |
$$ | X X X X X . . | X X X X X . . | X X X X X . . | X X X X X . . | X X X X X . . | X X X X X . . | X X X X X . . |
$$ | . . . . . . . | . . . . . . . | . . . . . . . | . . . . . . . | . . . . . . . | . . . . . . . | . . . . . . . |
$$ | . . . . . . . | . . . . . . . | . . . . . . . | . . . . . . . | . . . . . . . | . . . . . . . | . . . . . . . |
- Click Here To Show Diagram Code
[go]$$W :w5: pass; :b6: pass
$$ +----------------------------------------------------------------------------------------------------------------
$$ | Z Z 1 O X . . | M M O O X . . | 3 2 O O X . . | O 4 O O X . . | . # . . X . . | B B . O X . . | . Y O O X . . |
$$ | O O O O X . . | O O O O X . . | O O O O X . . | O O O O X . . | . . . . X . . | O O O O X . . | O O O O X . . |
$$ | X X X X X . . | X X X X X . . | X X X X X . . | X X X X X . . | X X X X X . . | X X X X X . . | X X X X X . . |
$$ | . . . . . . . | . . . . . . . | . . . . . . . | . . . . . . . | . . . . . . . | . . . . . . . | . . . . . . . |
$$ | . . . . . . . | . . . . . . . | . . . . . . . | . . . . . . . | . . . . . . . | . . . . . . . | . . . . . . . |[/go]
Black's stones are taken by

.
Thereafter,

is played. This stone is taken by

.
Thereafter,

is played. This is a stone that cannot be taken.

is also a "new" stone, as it cannot be played before

, because that board point is still occupied by

. => "alive".
(===> The procedure is recursive.)
L&D Example 2
$$W
$$ +------------------
$$ | . Y O . O X . . |
$$ | Y . O . O X . . |
$$ | O O O O X X . . |
$$ | X X X X . . . . |
$$ | . . . . . . . . |
$$ | . . . . . . . . |
- Click Here To Show Diagram Code
[go]$$W
$$ +------------------
$$ | . Y O . O X . . |
$$ | Y . O . O X . . |
$$ | O O O O X X . . |
$$ | X X X X . . . . |
$$ | . . . . . . . . |
$$ | . . . . . . . . |[/go]
What is the status of Black's marked stones?
$$W :w1: pass; :w2: pass
$$ +------------------------------------
$$ | . X O . O X . . | . B O . O X . . |
$$ | X . O . O X . . | B . O . O X . . |
$$ | O O O O X X . . | O O O O X X . . |
$$ | X X X X . . . . | X X X X . . . . |
$$ | . . . . . . . . | . . . . . . . . |
$$ | . . . . . . . . | . . . . . . . . |
- Click Here To Show Diagram Code
[go]$$W :w1: pass; :w2: pass
$$ +------------------------------------
$$ | . X O . O X . . | . B O . O X . . |
$$ | X . O . O X . . | B . O . O X . . |
$$ | O O O O X X . . | O O O O X X . . |
$$ | X X X X . . . . | X X X X . . . . |
$$ | . . . . . . . . | . . . . . . . . |
$$ | . . . . . . . . | . . . . . . . . |[/go]
Black's stones were not taken => "alive".
$$W :w5: pass; :w6: pass
$$ +------------------------------------------------------------------------
$$ | . X O 3 O X . . | . X O O O X . . | . X . . . X . . | . B O . O X . . |
$$ | X 1 O 2 O X . . | X O O 4 O X . . | X . . X . X . . | B . O . O X . . |
$$ | O O O O X X . . | O O O O X X . . | . . . . X X . . | O O O O X X . . |
$$ | X X X X . . . . | X X X X . . . . | X X X X . . . . | X X X X . . . . |
$$ | . . . . . . . . | . . . . . . . . | . . . . . . . . | . . . . . . . . |
$$ | . . . . . . . . | . . . . . . . . | . . . . . . . . | . . . . . . . . |
- Click Here To Show Diagram Code
[go]$$W :w5: pass; :w6: pass
$$ +------------------------------------------------------------------------
$$ | . X O 3 O X . . | . X O O O X . . | . X . . . X . . | . B O . O X . . |
$$ | X 1 O 2 O X . . | X O O 4 O X . . | X . . X . X . . | B . O . O X . . |
$$ | O O O O X X . . | O O O O X X . . | . . . . X X . . | O O O O X X . . |
$$ | X X X X . . . . | X X X X . . . . | X X X X . . . . | X X X X . . . . |
$$ | . . . . . . . . | . . . . . . . . | . . . . . . . . | . . . . . . . . |
$$ | . . . . . . . . | . . . . . . . . | . . . . . . . . | . . . . . . . . |[/go]
Black's stones were not taken => "alive".
$$W :w5: pass; :w6: pass
$$ +------------------------------------------------------------------------------------------------------------------------------
$$ | . X O . O X . . | 3 Z O . O X . . | O M O 4 O X . . | O . O # . X . . | . B O . O X . . | . X O Y O X . . | . X O M O X . . |
$$ | X 1 O 2 O X . . | Z O O X O X . . | M O O X O X . . | . O O X . X . . | B . O . O X . . | X . O Q O X . . | X . O O O X . . |
$$ | O O O O X X . . | O O O O X X . . | O O O O X X . . | O O O O X X . . | O O O O X X . . | O O O O X X . . | O O O O X X . . |
$$ | X X X X . . . . | X X X X . . . . | X X X X . . . . | X X X X . . . . | X X X X . . . . | X X X X . . . . | X X X X . . . . |
$$ | . . . . . . . . | . . . . . . . . | . . . . . . . . | . . . . . . . . | . . . . . . . . | . . . . . . . . | . . . . . . . . |
$$ | . . . . . . . . | . . . . . . . . | . . . . . . . . | . . . . . . . . | . . . . . . . . | . . . . . . . . | . . . . . . . . |
- Click Here To Show Diagram Code
[go]$$W :w5: pass; :w6: pass
$$ +------------------------------------------------------------------------------------------------------------------------------
$$ | . X O . O X . . | 3 Z O . O X . . | O M O 4 O X . . | O . O # . X . . | . B O . O X . . | . X O Y O X . . | . X O M O X . . |
$$ | X 1 O 2 O X . . | Z O O X O X . . | M O O X O X . . | . O O X . X . . | B . O . O X . . | X . O Q O X . . | X . O O O X . . |
$$ | O O O O X X . . | O O O O X X . . | O O O O X X . . | O O O O X X . . | O O O O X X . . | O O O O X X . . | O O O O X X . . |
$$ | X X X X . . . . | X X X X . . . . | X X X X . . . . | X X X X . . . . | X X X X . . . . | X X X X . . . . | X X X X . . . . |
$$ | . . . . . . . . | . . . . . . . . | . . . . . . . . | . . . . . . . . | . . . . . . . . | . . . . . . . . | . . . . . . . . |
$$ | . . . . . . . . | . . . . . . . . | . . . . . . . . | . . . . . . . . | . . . . . . . . | . . . . . . . . | . . . . . . . . |[/go]
Black's stones are taken by

.
Thereafter,

is played. This is a stone that cannot be taken.

is also a "new" stone, as it cannot be played before

. Otherwise, it will be taken by

, and no other "uncapturable" stone can be played thereafter. => "alive".
L&D Example 4
$$W
$$ +-----------------------+
$$ | . O . . O O O Y O . . |
$$ | O O Y Y Y Y Y Y O . . |
$$ | . X O O O O O O O . . |
$$ | . X O . . . . . . . . |
$$ | O X O . . . . . . . . |
$$ | O X O . . . . . . . . |
$$ | O X O . . . . . . . . |
$$ | X X O . . . . . . . . |
$$ | O O O . . . . . . . . |
$$ | . . . . . . . . . . . |
$$ | . . . . . . . . . . . |
- Click Here To Show Diagram Code
[go]$$W
$$ +-----------------------+
$$ | . O . . O O O Y O . . |
$$ | O O Y Y Y Y Y Y O . . |
$$ | . X O O O O O O O . . |
$$ | . X O . . . . . . . . |
$$ | O X O . . . . . . . . |
$$ | O X O . . . . . . . . |
$$ | O X O . . . . . . . . |
$$ | X X O . . . . . . . . |
$$ | O O O . . . . . . . . |
$$ | . . . . . . . . . . . |
$$ | . . . . . . . . . . . |[/go]
What is the status of Black's marked stones?
$$W :w1: pass; :b2: pass
$$ +------------------------------------------------
$$ | . O . . O O O X O . . | . O . . O O O B O . . |
$$ | O O X X X X X X O . . | O O B B B B B B O . . |
$$ | . X O O O O O O O . . | . X O O O O O O O . . |
$$ | . X O . . . . . . . . | . X O . . . . . . . . |
$$ | O X O . . . . . . . . | O X O . . . . . . . . |
$$ | O X O . . . . . . . . | O X O . . . . . . . . |
$$ | O X O . . . . . . . . | O X O . . . . . . . . |
$$ | X X O . . . . . . . . | X X O . . . . . . . . |
$$ | O O O . . . . . . . . | O O O . . . . . . . . |
$$ | . . . . . . . . . . . | . . . . . . . . . . . |
$$ | . . . . . . . . . . . | . . . . . . . . . . . |
- Click Here To Show Diagram Code
[go]$$W :w1: pass; :b2: pass
$$ +------------------------------------------------
$$ | . O . . O O O X O . . | . O . . O O O B O . . |
$$ | O O X X X X X X O . . | O O B B B B B B O . . |
$$ | . X O O O O O O O . . | . X O O O O O O O . . |
$$ | . X O . . . . . . . . | . X O . . . . . . . . |
$$ | O X O . . . . . . . . | O X O . . . . . . . . |
$$ | O X O . . . . . . . . | O X O . . . . . . . . |
$$ | O X O . . . . . . . . | O X O . . . . . . . . |
$$ | X X O . . . . . . . . | X X O . . . . . . . . |
$$ | O O O . . . . . . . . | O O O . . . . . . . . |
$$ | . . . . . . . . . . . | . . . . . . . . . . . |
$$ | . . . . . . . . . . . | . . . . . . . . . . . |[/go]
Black's stones were not taken => "alive".
$$W :w3: pass; :w5: pass; :b6: pass
$$ +------------------------------------------------------------------------
$$ | . O 1 2 O O O X O . . | . O O X . 4 . X O . . | . O . . O O O B O . . |
$$ | O O X X X X X X O . . | O O X X X X X X O . . | O O B B B B B B O . . |
$$ | . X O O O O O O O . . | . X O O O O O O O . . | . X O O O O O O O . . |
$$ | . X O . . . . . . . . | . X O . . . . . . . . | . X O . . . . . . . . |
$$ | O X O . . . . . . . . | O X O . . . . . . . . | O X O . . . . . . . . |
$$ | O X O . . . . . . . . | O X O . . . . . . . . | O X O . . . . . . . . |
$$ | O X O . . . . . . . . | O X O . . . . . . . . | O X O . . . . . . . . |
$$ | X X O . . . . . . . . | X X O . . . . . . . . | X X O . . . . . . . . |
$$ | O O O . . . . . . . . | O O O . . . . . . . . | O O O . . . . . . . . |
$$ | . . . . . . . . . . . | . . . . . . . . . . . | . . . . . . . . . . . |
$$ | . . . . . . . . . . . | . . . . . . . . . . . | . . . . . . . . . . . |
- Click Here To Show Diagram Code
[go]$$W :w3: pass; :w5: pass; :b6: pass
$$ +------------------------------------------------------------------------
$$ | . O 1 2 O O O X O . . | . O O X . 4 . X O . . | . O . . O O O B O . . |
$$ | O O X X X X X X O . . | O O X X X X X X O . . | O O B B B B B B O . . |
$$ | . X O O O O O O O . . | . X O O O O O O O . . | . X O O O O O O O . . |
$$ | . X O . . . . . . . . | . X O . . . . . . . . | . X O . . . . . . . . |
$$ | O X O . . . . . . . . | O X O . . . . . . . . | O X O . . . . . . . . |
$$ | O X O . . . . . . . . | O X O . . . . . . . . | O X O . . . . . . . . |
$$ | O X O . . . . . . . . | O X O . . . . . . . . | O X O . . . . . . . . |
$$ | X X O . . . . . . . . | X X O . . . . . . . . | X X O . . . . . . . . |
$$ | O O O . . . . . . . . | O O O . . . . . . . . | O O O . . . . . . . . |
$$ | . . . . . . . . . . . | . . . . . . . . . . . | . . . . . . . . . . . |
$$ | . . . . . . . . . . . | . . . . . . . . . . . | . . . . . . . . . . . |[/go]
Black's stones were not taken => "alive".
$$W :w5: pass; :b6: pass
$$ +------------------------------------------------------------------------------------------------
$$ | . O 1 2 O O O X O . . | . O O X . 3 . X O . . | . O O X . O . X O . . | . O . . O O O B O . . |
$$ | O O X X X X X X O . . | O O X X X X X X O . . | O O X X X X X X O . . | O O B B B B B B O . . |
$$ | . X O O O O O O O . . | . X O O O O O O O . . | . X O O O O O O O . . | . X O O O O O O O . . |
$$ | . X O . . . . . . . . | 4 X O . . . . . . . . | X X O . . . . . . . . | . X O . . . . . . . . |
$$ | O X O . . . . . . . . | O X O . . . . . . . . | . X O . . . . . . . . | O X O . . . . . . . . |
$$ | O X O . . . . . . . . | O X O . . . . . . . . | . X O . . . . . . . . | O X O . . . . . . . . |
$$ | O X O . . . . . . . . | O X O . . . . . . . . | . X O . . . . . . . . | O X O . . . . . . . . |
$$ | X X O . . . . . . . . | X X O . . . . . . . . | X X O . . . . . . . . | X X O . . . . . . . . |
$$ | O O O . . . . . . . . | O O O . . . . . . . . | O O O . . . . . . . . | O O O . . . . . . . . |
$$ | . . . . . . . . . . . | . . . . . . . . . . . | . . . . . . . . . . . | . . . . . . . . . . . |
$$ | . . . . . . . . . . . | . . . . . . . . . . . | . . . . . . . . . . . | . . . . . . . . . . . |
- Click Here To Show Diagram Code
[go]$$W :w5: pass; :b6: pass
$$ +------------------------------------------------------------------------------------------------
$$ | . O 1 2 O O O X O . . | . O O X . 3 . X O . . | . O O X . O . X O . . | . O . . O O O B O . . |
$$ | O O X X X X X X O . . | O O X X X X X X O . . | O O X X X X X X O . . | O O B B B B B B O . . |
$$ | . X O O O O O O O . . | . X O O O O O O O . . | . X O O O O O O O . . | . X O O O O O O O . . |
$$ | . X O . . . . . . . . | 4 X O . . . . . . . . | X X O . . . . . . . . | . X O . . . . . . . . |
$$ | O X O . . . . . . . . | O X O . . . . . . . . | . X O . . . . . . . . | O X O . . . . . . . . |
$$ | O X O . . . . . . . . | O X O . . . . . . . . | . X O . . . . . . . . | O X O . . . . . . . . |
$$ | O X O . . . . . . . . | O X O . . . . . . . . | . X O . . . . . . . . | O X O . . . . . . . . |
$$ | X X O . . . . . . . . | X X O . . . . . . . . | X X O . . . . . . . . | X X O . . . . . . . . |
$$ | O O O . . . . . . . . | O O O . . . . . . . . | O O O . . . . . . . . | O O O . . . . . . . . |
$$ | . . . . . . . . . . . | . . . . . . . . . . . | . . . . . . . . . . . | . . . . . . . . . . . |
$$ | . . . . . . . . . . . | . . . . . . . . . . . | . . . . . . . . . . . | . . . . . . . . . . . |[/go]
Black's stones were not taken => "alive".
$$W
$$ +------------------------------------------------------------------------------------------------------------------------
$$ | . O 1 2 O O O X O . . | . O O X . 3 . X O . . | . O O X . O 5 X O . . | . O O Z 7 O O Z O . . | . O O M O O O M O . . |
$$ | O O X X X X X X O . . | O O X X X X X X O . . | O O X X X X X X O . . | O O Z Z Z Z Z Z O . . | O O M M M M M M O . . |
$$ | . X O O O O O O O . . | . X O O O O O O O . . | 6 X O O O O O O O . . | X X O O O O O O O . . | X X O O O O O O O . . |
$$ | . X O . . . . . . . . | 4 X O . . . . . . . . | X X O . . . . . . . . | X X O . . . . . . . . | X X O . . . . . . . . |
$$ | O X O . . . . . . . . | O X O . . . . . . . . | . X O . . . . . . . . | . X O . . . . . . . . | . X O . . . . . . . . |
$$ | O X O . . . . . . . . | O X O . . . . . . . . | . X O . . . . . . . . | . X O . . . . . . . . | . X O . . . . . . . . |
$$ | O X O . . . . . . . . | O X O . . . . . . . . | . X O . . . . . . . . | . X O . . . . . . . . | . X O . . . . . . . . |
$$ | X X O . . . . . . . . | X X O . . . . . . . . | X X O . . . . . . . . | X X O . . . . . . . . | X X O . . . . . . . . |
$$ | O O O . . . . . . . . | O O O . . . . . . . . | O O O . . . . . . . . | O O O . . . . . . . . | O O O . . . . . . . . |
$$ | . . . . . . . . . . . | . . . . . . . . . . . | . . . . . . . . . . . | . . . . . . . . . . . | . . . . . . . . . . . |
$$ | . . . . . . . . . . . | . . . . . . . . . . . | . . . . . . . . . . . | . . . . . . . . . . . | . . . . . . . . . . . |
- Click Here To Show Diagram Code
[go]$$W
$$ +------------------------------------------------------------------------------------------------------------------------
$$ | . O 1 2 O O O X O . . | . O O X . 3 . X O . . | . O O X . O 5 X O . . | . O O Z 7 O O Z O . . | . O O M O O O M O . . |
$$ | O O X X X X X X O . . | O O X X X X X X O . . | O O X X X X X X O . . | O O Z Z Z Z Z Z O . . | O O M M M M M M O . . |
$$ | . X O O O O O O O . . | . X O O O O O O O . . | 6 X O O O O O O O . . | X X O O O O O O O . . | X X O O O O O O O . . |
$$ | . X O . . . . . . . . | 4 X O . . . . . . . . | X X O . . . . . . . . | X X O . . . . . . . . | X X O . . . . . . . . |
$$ | O X O . . . . . . . . | O X O . . . . . . . . | . X O . . . . . . . . | . X O . . . . . . . . | . X O . . . . . . . . |
$$ | O X O . . . . . . . . | O X O . . . . . . . . | . X O . . . . . . . . | . X O . . . . . . . . | . X O . . . . . . . . |
$$ | O X O . . . . . . . . | O X O . . . . . . . . | . X O . . . . . . . . | . X O . . . . . . . . | . X O . . . . . . . . |
$$ | X X O . . . . . . . . | X X O . . . . . . . . | X X O . . . . . . . . | X X O . . . . . . . . | X X O . . . . . . . . |
$$ | O O O . . . . . . . . | O O O . . . . . . . . | O O O . . . . . . . . | O O O . . . . . . . . | O O O . . . . . . . . |
$$ | . . . . . . . . . . . | . . . . . . . . . . . | . . . . . . . . . . . | . . . . . . . . . . . | . . . . . . . . . . . |
$$ | . . . . . . . . . . . | . . . . . . . . . . . | . . . . . . . . . . . | . . . . . . . . . . . | . . . . . . . . . . . |[/go]
Black's stones are taken by

.
$$W :w9: pass; :b10: pass
$$ +------------------------------------------------------------------------------------------------
$$ | . O O . O O O . O . . | . O O . O O O . O . . | . O O . O O O B O . . | . O O . O O O X O . . |
$$ | O O . . . . . . O . . | O O . . . . . . O . . | O O B B B B B B O . . | O O X X X X X X O . . |
$$ | X X O O O O O O O . . | X X O O O O O O O . . | . X O O O O O O O . . | . X O O O O O O O . . |
$$ | X X O . . . . . . . . | X X O . . . . . . . . | . X O . . . . . . . . | . X O . . . . . . . . |
$$ | . X O . . . . . . . . | . X O . . . . . . . . | O X O . . . . . . . . | O X O . . . . . . . . |
$$ | 8 X O . . . . . . . . | # X O . . . . . . . . | O X O . . . . . . . . | @ X O . . . . . . . . |
$$ | . X O . . . . . . . . | . X O . . . . . . . . | O X O . . . . . . . . | O X O . . . . . . . . |
$$ | X X O . . . . . . . . | X X O . . . . . . . . | X X O . . . . . . . . | X X O . . . . . . . . |
$$ | O O O . . . . . . . . | O O O . . . . . . . . | O O O . . . . . . . . | O O O . . . . . . . . |
$$ | . . . . . . . . . . . | . . . . . . . . . . . | . . . . . . . . . . . | . . . . . . . . . . . |
$$ | . . . . . . . . . . . | . . . . . . . . . . . | . . . . . . . . . . . | . . . . . . . . . . . |
- Click Here To Show Diagram Code
[go]$$W :w9: pass; :b10: pass
$$ +------------------------------------------------------------------------------------------------
$$ | . O O . O O O . O . . | . O O . O O O . O . . | . O O . O O O B O . . | . O O . O O O X O . . |
$$ | O O . . . . . . O . . | O O . . . . . . O . . | O O B B B B B B O . . | O O X X X X X X O . . |
$$ | X X O O O O O O O . . | X X O O O O O O O . . | . X O O O O O O O . . | . X O O O O O O O . . |
$$ | X X O . . . . . . . . | X X O . . . . . . . . | . X O . . . . . . . . | . X O . . . . . . . . |
$$ | . X O . . . . . . . . | . X O . . . . . . . . | O X O . . . . . . . . | O X O . . . . . . . . |
$$ | 8 X O . . . . . . . . | # X O . . . . . . . . | O X O . . . . . . . . | @ X O . . . . . . . . |
$$ | . X O . . . . . . . . | . X O . . . . . . . . | O X O . . . . . . . . | O X O . . . . . . . . |
$$ | X X O . . . . . . . . | X X O . . . . . . . . | X X O . . . . . . . . | X X O . . . . . . . . |
$$ | O O O . . . . . . . . | O O O . . . . . . . . | O O O . . . . . . . . | O O O . . . . . . . . |
$$ | . . . . . . . . . . . | . . . . . . . . . . . | . . . . . . . . . . . | . . . . . . . . . . . |
$$ | . . . . . . . . . . . | . . . . . . . . . . . | . . . . . . . . . . . | . . . . . . . . . . . |[/go]
Thereafter,

is played. This is a stone that cannot be taken.

is also a "new" stone, as it cannot be played before

, because that board point is still occupied by

. => "alive".