Life In 19x19

Posted: **Mon May 30, 2022 10:56 am**

jlt wrote:From my kyu perspective, White would just sacrifice two stones, which is not so big

Yea, it was just bad reading on my part.

Posted: **Sat Jun 11, 2022 4:29 am**

Position #71, White to play.

Click Here To Show Diagram Code: [go]$$Wc White to play $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . O . O X . . . . . X . O . . . . . | $$ | . O . O . X . X X X . X . O . O O O . | $$ | . O . O . O O O O O O O O X X X X X . | $$ | X O . O . . . X X X . O X . . . . . . | $$ | . X O O . X . X O X X O . X . . . X . | $$ | . . X . . . . O O . X O O X . . O X . | $$ | . X . O X . X . O . X X X O O . . O . | $$ | . X X O O . . X O . O O O X . O . . . | $$ | . O O X O X O O O , . . . X . , . . . | $$ | . X . X . O . . . . . . . . . . . . . | $$ | . . X . X . . . . . . . . . X . X . . | $$ | . . . . . . X . . . . . . . . . . X X | $$ | . . . . . . . . . . . . . . . O O O X | $$ | . . . . . . . . . . X . . . . . X O O | $$ | . . . X . . . . . , . . . . O , . . . | $$ | . . . . . X . . . . X . O . . O . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

Posted: **Sat Jun 11, 2022 1:46 pm**

Posted: **Sat Jun 11, 2022 2:59 pm**

Hint: the last move was

Continue in the area.

Answer:

Click Here To Show Diagram Code: [go]$$Wc White to play $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . O . O X . . . . . X . O . . . . . | $$ | . O . O . X . X X X . X . O . O O O . | $$ | . O . O . O O O O O O O O X X X X X . | $$ | X O . O . . . X X X . O X . . . . . . | $$ | . X O O . X . X O X X O . X . . . X . | $$ | . . X . . . . O O . X O O X . . O X . | $$ | . X . O X . X . O . X X X O O . . O . | $$ | . X X O O . . X O . O O O X . O . . . | $$ | . O O X O X O O O , . . . X . , . 1 . | $$ | . X . X . O . . . . . . . . . . . . . | $$ | . . X . X . . . . . . . . . X . X . . | $$ | . . . . . . X . . . . . . . . . . X X | $$ | . . . . . . . . . . . . . . . O O O X | $$ | . . . . . . . . . . X . . . . . X O O | $$ | . . . X . . . . . , . . . . O , . . . | $$ | . . . . . X . . . . X . O . . O . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

The point is to protect against the clamp S11 while gaining liberties in order to win the capturing race against H15. THe black group S16 will need to add defensive moves.

Posted: **Tue Jul 26, 2022 2:44 am**

Position #72, White to play a good endgame move.

Click Here To Show Diagram Code: [go]$$Wc White to play $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . O . O . . . . . . . . . X O O O . | $$ | . X O . . . X . . . . X X . X O X X . | $$ | . X X O O . . X . X X O X . . O . . . | $$ | . . . . . . O O O O O O O O . O X . . | $$ | . . . . . . . O X X X O . . . . X . . | $$ | . . X . O . . O X . . X O . X . . . . | $$ | . . . X . . . X . X X X . X . . . . . | $$ | . . . X O . O O X X . . . X O . . . . | $$ | . . X O O . . . . , . X X O . , X . . | $$ | . X X . . X . X . X . O O . O O X . . | $$ | . O X O O X . . . . . . . . O X X . . | $$ | . O X O X X . X . X O . . . O X O . . | $$ | . . O O X . O . . . O . . . . O X X . | $$ | . . . . . . . . X X O . . . . O . . . | $$ | . . O , X X O O . O . . . . . O X . . | $$ | . O X X X O O . . . O . . X O O X . . | $$ | . O . . . X O O . . . . . . O X X . . | $$ | . . . . X . X . . . . . . . . . . . . | $$ ---------------------------------------[/go]

Posted: **Tue Jul 26, 2022 6:02 am**

Posted: **Tue Jul 26, 2022 9:30 am**

Interesting but Black could respond with

at

.
And in fact Katago was thinking about an endgame move in the upper left quadrant.

Posted: **Tue Jul 26, 2022 2:46 pm**

Click Here To Show Diagram Code: [go]$$Wc This ko looks tough for black? $$ --------------------------------------- $$ | . . . . . . . 5 . . . . . . . . . . . | $$ | . . O . O 6 3 4 1 . . . . . X O O O . | $$ | . X O . . . X . 2 . . X X . X O X X . | $$ | . X X O O . . X . X X O X . . O . . . | $$ | . . . . . . O O O O O O O O . O X . . | $$ | . . . . . . . O X X X O . . . . X . . | $$ | . . X . O . . O X . . X O . X . . . . | $$ | . . . X . . . X . X X X . X . . . . . | $$ | . . . X O . O O X X . . . X O . . . . | $$ | . . X O O . . . . , . X X O . , X . . | $$ | . X X . . X . X . X . O O . O O X . . | $$ | . O X O O X . . . . . . . . O X X . . | $$ | . O X O X X . X . X O . . . O X O . . | $$ | . . O O X . O . . . O . . . . O X X . | $$ | . . . . . . . . X X O . . . . O . . . | $$ | . . O , X X O O . O . . . . . O X . . | $$ | . O X X X O O . . . O . . X O O X . . | $$ | . O . . . X O O . . . . . . O X X . . | $$ | . . . . X . X . . . . . . . . . . . . | $$ ---------------------------------------[/go]

Click Here To Show Diagram Code: [go]$$Wc Or just this? $$ --------------------------------------- $$ | . . . . . . . 3 . . . . . . . . . . . | $$ | . . O . O . . . 1 . . . . . X O O O . | $$ | . X O . . . X . 2 . . X X . X O X X . | $$ | . X X O O . . X . X X O X . . O . . . | $$ | . . . . . . O O O O O O O O . O X . . | $$ | . . . . . . . O X X X O . . . . X . . | $$ | . . X . O . . O X . . X O . X . . . . | $$ | . . . X . . . X . X X X . X . . . . . | $$ | . . . X O . O O X X . . . X O . . . . | $$ | . . X O O . . . . , . X X O . , X . . | $$ | . X X . . X . X . X . O O . O O X . . | $$ | . O X O O X . . . . . . . . O X X . . | $$ | . O X O X X . X . X O . . . O X O . . | $$ | . . O O X . O . . . O . . . . O X X . | $$ | . . . . . . . . X X O . . . . O . . . | $$ | . . O , X X O O . O . . . . . O X . . | $$ | . O X X X O O . . . O . . X O O X . . | $$ | . O . . . X O O . . . . . . O X X . . | $$ | . . . . X . X . . . . . . . . . . . . | $$ ---------------------------------------[/go]

Posted: **Tue Jul 26, 2022 11:54 pm**

Yes your proposition is a good move

Katago hesitated with another move, not sure which one is best.

Posted: **Tue Aug 16, 2022 12:13 am**

Position #73: White to respond to the cross-cut and find a good way to escape.

Click Here To Show Diagram Code: [go]$$Wc White to play $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . O O O . . | $$ | . . X O . . . . . . . . . O X O X X . | $$ | . . X O . . . . . O . . . O X X . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . X O . . . . . . . . . . . . . X . . | $$ | . X . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . O . . . . . | $$ | . . . . . . . . . . . . X . O . . . . | $$ | . . . , . . . . . , . . . . . O . . . | $$ | . . X . . . . . . . . X . X X O . . . | $$ | . . . . . . . . . . . . . . O X . . . | $$ | . . . . . . . . . . X O . . O X . . . | $$ | . . . . . . . . . . O B . . O X . . . | $$ | . . X . . . . . . . . . . . O X . . . | $$ | . . . , O . . . . , . X . . O O X . . | $$ | . . . O . . . X . . . . . X . . X . . | $$ | . . . . . . . . . . . . . . . O . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

AI's answer:

Click Here To Show Diagram Code: [go]$$Wc White to play $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . O O O . . | $$ | . . X O . . . . . . . . . O X O X X . | $$ | . . X O . . . . . O . . . O X X . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . X O . . . . . . . . . . . . . X . . | $$ | . X . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . O . . . . . | $$ | . . . . . . . . . . . . X . O . . . . | $$ | . . . , . . . . . , . . . . . O . . . | $$ | . . X . . . . . . . . X . X X O . . . | $$ | . . . . . . . . . . 5 7 . . O X . . . | $$ | . . . . . . . . . 6 X O 3 . O X . . . | $$ | . . . . . . . . . . O X 2 . O X . . . | $$ | . . X . . . . . . . . 1 4 . O X . . . | $$ | . . . , O . . . . , . X . . O O X . . | $$ | . . . O . . . X . . . . . X . . X . . | $$ | . . . . . . . . . . . . . . . O . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

This gives Black a few points on the bottom but allows White to escape and attack the central group.

Posted: **Mon Aug 22, 2022 2:55 am**

Position #74, easy move missed again.

Click Here To Show Diagram Code: [go]$$Bc Black to play $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . O . . | $$ | . . . . . . . . . . . . . . X O . O . | $$ | . . . O . . . . O . . X . X . X O . . | $$ | . . O , O . . . . , O X . . . X O O . | $$ | . . X X O . . . . . O X . . . X O . O | $$ | . . . . . . . . X X X X O . O X X O O | $$ | . . . . . . . . . O O O . . . X . X O | $$ | . . X . X . . . . . . . . . . . . X O | $$ | . . . . . . . . . . . O . . . . . X X | $$ | . . . , . . . . . W O X X . . , . . . | $$ | . . O . . . . . . . X O X X . . . . . | $$ | . . . . . . . . . . . O O X . . X . . | $$ | . . . . . . . . . . . . X O X . . . . | $$ | . . O . . . . . . . . . . O . . . . . | $$ | . . . . . . . . . . . . . . O X X . . | $$ | . O . X . . . . . , . . . . O , O . . | $$ | . . X . . . X . . X . O . . . O . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

Answer:

Posted: **Thu Nov 24, 2022 2:32 pm**

Position #75, Black to play. Nothing fancy, but not at all on my radar.

Click Here To Show Diagram Code: [go]$$Bc Black to play $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . W X . . . . . . . . . . . . . | $$ | . . . O . . . . O , . . . . . X . . . | $$ | . . . . . X . . . . . . . . . . . . . | $$ | . . O . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . , . . . . . , . . . . . O . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . O O . . | $$ | . . . . . . . . . . . . . . . O X . . | $$ | . . O O O . . . . , . . . . . , X . . | $$ | . . X X . . . . . . . . . X . X . . . | $$ | . . . . . X . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

Answer

Click Here To Show Diagram Code: [go]$$Bc Answer $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . a b B . . . . . . . . . . . . | $$ | . . . . O X . . . . . . . . . . . . . | $$ | . . . O . . . . O , . . . . . X . . . | $$ | . . . . . X . . . . . . . . . . . . . | $$ | . . O . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . , . . . . . , . . . . . O . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . O O . . | $$ | . . . . . . . . . . . . . . . O X . . | $$ | . . O O O . . . . , . . . . . , X . . | $$ | . . X X . . . . . . . . . X . X . . . | $$ | . . . . . X . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

The move has a followup at "a". It also makes the pincer of J16 more powerful than if Black had played the descent "b".

Posted: **Wed Feb 22, 2023 2:37 am**

Position #76, Black to play. Another simple shape I missed.

Click Here To Show Diagram Code: [go]$$Bc $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . X , . X . . . , . . . . . , X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . , . . . . . , . . . . . , O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . O . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . O O . . . . . , X X X X . X O . . | $$ | . . X X O O O O . . O O O O X . W . . | $$ | . . . . X X X . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

Answer:

Posted: **Fri Mar 10, 2023 2:21 am**

Position #77, Black to play.

Click Here To Show Diagram Code: [go]$$Bc $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . X X X X X O . . . . . . . . . . . . | $$ | . X O O O . . . . , . . . . . X . . . | $$ | . O O . . . O . . . . . . . . . . . . | $$ | . . X . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . O . . . . . . . . . . . . . . . . | $$ | . . . , . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . X . . . . . . . . . . . . . O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . X . . . | $$ | . . X . . . . . . . . . . . . . . . . | $$ | . . X O . . . . . , . . . . . , . . . | $$ | . . O O . . O . . . . . . . . X . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

Click Here To Show Diagram Code: [go]$$Bc $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . X X X X X O . . . . . . . . . . . . | $$ | . X O O O a 1 . . , . . . . . X . . . | $$ | . O O . . . O . . . . . . . . . . . . | $$ | . . X . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . O . . . . . . . . . . . . . . . . | $$ | . . . , . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . X . . . . . . . . . . . . . O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . X . . . | $$ | . . X . . . . . . . . . . . . . . . . | $$ | . . X O . . . . . , . . . . . , . . . | $$ | . . O O . . O . . . . . . . . X . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

Earlier, White should have protected at a, so Black should ruin White's shape with

. At this point Katago wants White to tenuki. Later, if for instance White ataris then here is a possible local continuation.

Click Here To Show Diagram Code: [go]$$Bc $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . X X X X X O . . . . . . . . . . . . | $$ | . X O O O 3 1 2 . , . . . . . X . . . | $$ | . O O . . 4 O 5 . . . . . . . . . . . | $$ | . . X . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . |[/go]

Posted: **Fri Mar 10, 2023 2:27 am**

Position #78, Black to play. From the same correspondence game against gennan. At move 144 (position below) Katago says White was leading by 1.5. In the end White won by 16.5, increasing his advantage step by step between moves 144 and 286. Black missed several important points which appear in the following position.

Click Here To Show Diagram Code: [go]$$Bc Black to play $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . X O . . . X . . O X X O X . | $$ | . X X X X X O . . X O X . . O X O X . | $$ | . X O O O . . . O O O O O . . X O X . | $$ | . O O . . . O . . X O X O . O X X O . | $$ | . . X . . . . . . . O X O O X . X O . | $$ | . . . . O . . O . O X X X X X X X O . | $$ | . . . . . . X X O . O X O O X X X . . | $$ | . . O O . X . . X O . O . . O . . . . | $$ | . . . , . O X X . , O . . . . , X . . | $$ | . . O O . X O X . O X O . . . . . . . | $$ | . X X X X . . . . . X O . O . O O . . | $$ | . O . . . O . . . . . X . . . X . . . | $$ | . X X X . . . X . . X . . X . X O . . | $$ | . O X O . . O . . X . . . . . X O . . | $$ | . O X O . . . X X O . . . X O O X . . | $$ | . . O O . . O O O . . O . . X X X . . | $$ | . . . . . . . . . . . . . O . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

The first point is more complicated than it seems. Black should play

in sente.

Click Here To Show Diagram Code: [go]$$Bc $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . X O . . . X . . O X X O X . | $$ | . X X X X X O . . X O X . . O X O X . | $$ | . X O O O 1 . . O O O O O . . X O X . | $$ | c O O . . 2 O . . X O X O . O X X O . | $$ | d a X b . . . . . . O X O O X . X O . | $$ | . . . . O . . O . O X X X X X X X O . | $$ | . . . . . . X X O . O X O O X X X . . | $$ | . . O O . X . . X O . O . . O . . . . | $$ | . . . , . O X X . , O . . . . , X . . | $$ | . . O O . X O X . O X O . . . . . . . | $$ | . X X X X . . . . . X O . O . O O . . | $$ | . O . . . O . . . . . X . . . X . . . |[/go]

If White doesn't answer with

then Black can play a. If White responds with c or d then Black b. The variations are a bit complicated but normally Black can threaten to capture white stones and then connect to a living group to save his three stones. So Katago prefers white to answer Black a with White b, and then Black can connect with c.

Then Black should play

in sente. If White doesn't respond with

then Black can play a.

Click Here To Show Diagram Code: [go]$$Bc $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . X O . . . X . . O X X O X . | $$ | . X X X X X O . a X O X . . O X O X . | $$ | . X O O O 1 3 4 O O O O O . . X O X . | $$ | . O O . . 2 O . . X O X O . O X X O . | $$ | . . X . . . . . . . O X O O X . X O . | $$ | . . . . O . . O . O X X X X X X X O . | $$ | . . . . . . X X O . O X O O X X X . . | $$ | . . O O . X . . X O . O . . O . . . . | $$ | . . . , . O X X . , O . . . . , X . . | $$ | . . O O . X O X . O X O . . . . . . . | $$ | . X X X X . . . . . X O . O . O O . . | $$ | . O . . . O . . . . . X . . . X . . . |[/go]

Next comes this sequence:

Click Here To Show Diagram Code: [go]$$Bc $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . X O . . . X . . O X X O X . | $$ | . X X X X X O . . X O X . . O X O X . | $$ | . X O O O 1 3 4 O O O O O . . X O X . | $$ | . O O . . 2 O . . X O X O . O X X W . | $$ | . . X . . . . . . . O X O O X . X W . | $$ | . . . . O . . O . O X X X X X X X W . | $$ | . . . . . . X X O . O X O O X X X . . | $$ | . . O O . X . . X O . O . . O . . a . | $$ | . . . , . O X X . , O . . . . , X . . | $$ | . . O O . X O X . O X O . . . . . 5 . | $$ | . X X X X . . . . . X O . O . O O 6 . | $$ | . O . . . O . . . . . X . . . X 7 b . | $$ | . X X X . . . X . . X . . X . X O . . | $$ | . O X O . . O . . X . . . . . X O . . | $$ | . O X O . . . X X O . . . X O O X . . | $$ | . . O O . . O O O . . O . . X X X . . | $$ | . . . . . . . . . . . . . O . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

is very big because White playing there is sente (threatens to save the three marked stones). White responds with

(if White plays elsewhere then Black

and

is at

anyway). One reason why

is big is that, besides reducing Black's corner, it threatens the reduction move a. So after a sequence starting with a, Black will close the corner with b.

Another worthwhile and simple sequence for Black later: close territory while pressing White down to the second line in sente.

Click Here To Show Diagram Code: [go]$$Bc $$ | . X X X X . . . . . X O . O . O O O . | $$ | . O . . . O . . . . . X . . . X X X . | $$ | . X X X . . . X . . X . . X . X O . . | $$ | . O X O . . O . . X . . . . . X O . . | $$ | . O X O . . . X X O 3 7 . X O O X . . | $$ | . . O O . . O O O 4 5 O 1 . X X X . . | $$ | . . . . . . . . . . 6 8 2 O . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

Life In 19x19

Shapes to remember (SDK level)

Re: Shapes to remember (SDK level)

Re: Shapes to remember (SDK level)

Re: Shapes to remember (SDK level)

Re: Shapes to remember (SDK level)

Re: Shapes to remember (SDK level)

Re: Shapes to remember (SDK level)

Re: Shapes to remember (SDK level)

Re: Shapes to remember (SDK level)

Re: Shapes to remember (SDK level)

Re: Shapes to remember (SDK level)

Re: Shapes to remember (SDK level)

Re: Shapes to remember (SDK level)

Re: Shapes to remember (SDK level)

Re: Shapes to remember (SDK level)

Re: Shapes to remember (SDK level)