Dead Shapes 2
Keywords: Shape, Life & Death
Basic dead shapes, alternative page.
GijsD?: This page is meant to be a mini catalogue of basic shapes, extending the Basic death shapes to include positions where there is more than one White stone inside Black's eye space, but the position is not seki.
- Positions with cutting points are not included.
- Side or corner positions are not included.
- Red circles indicate how White can almost fill the black eye space.
- The effective number of internal liberties is included (big eyes).
- The diagrams show the minimum number of internal White stones required to kill Black's group:
- 0: Black's group is dead as it stands;
- 1: Strike at the vital point;
- 2: Miai points, use one as a ko threat;
- 3 or more: No, it's not a seki!
One point shapes
![[Diagram]](../diagrams/52/6a62a60b234a328e1a5f2a5f4d04fa06.png) | Diag.: Shape #1 |
Number of internal points: 1
Required number of internal White stones to kill: 0
Remaining internal moves to capture: 1
Total internal liberties: 1
Two point shapes
![[Diagram]](../diagrams/22/031edee876d40cf52addcac87e302e1d.png) | Diag.: Shape #2 |
Number of internal points: 2
Required number of internal White stones to kill: 0
Remaining internal moves to capture: 2
Total internal liberties: 2
Three point shapes
![[Diagram]](../diagrams/51/fc4d7994baacbf5136d073a056d2ab1e.png) | Diag.: Shape #3 |
Number of internal points: 3
Required number of internal White stones to kill: 1
Remaining internal moves to capture: 2
Total internal liberties: 3
Four point shapes
![[Diagram]](../diagrams/50/131301c94ea1d58931c03de4fede71b3.png) | Diag.: Shape #4 |
Number of internal points: 4
Required number of internal White stones to kill: 0
Remaining internal moves to capture: 5
Total internal liberties: 5
![[Diagram]](../diagrams/29/d3ea6b3136bb40ade032b1e6293f3bbe.png) | Diag.: Shape #5 |
Number of internal points: 4
Required number of internal White stones to kill: 1
Remaining internal moves to capture: 4
Total internal liberties: 5
![[Diagram]](../diagrams/26/c652c54df637e540433187b2001c144b.png) | Diag.: Shape #6 |
Number of internal points: 4
Required number of internal White stones to kill: 2
Remaining internal moves to capture: 3
Total internal liberties: 5
Five point shapes
![[Diagram]](../diagrams/47/f75a65083e977af2d62cc057d819acb4.png) | Diag.: Shape #7 |
Number of internal points: 5
Required number of internal White stones to kill: 1
Remaining internal moves to capture: 7
Total internal liberties: 8
![[Diagram]](../diagrams/2/8b11ec087d089d3c3187106b1af1a8f2.png) | Diag.: Shape #8 |
Number of internal points: 5
Required number of internal White stones to kill: 1
Remaining internal moves to capture: 7
Total internal liberties: 8
![[Diagram]](../diagrams/12/a11282424a7444f74680e6cc4fdd953d.png) | Diag.: Shape #9 |
Number of internal points: 5
Required number of internal White stones to kill: 2
Remaining internal moves to capture: 6
Total internal liberties: 8
Six point shapes
![[Diagram]](../diagrams/7/756b0fb354f597ec347fa4df710bd4a4.png) | Diag.: Shape #10 |
Number of internal points: 6
Required number of internal White stones to kill: 1
Remaining internal moves to capture: 11
Total internal liberties: 12
![[Diagram]](../diagrams/33/7f5b45a752dbba649e772563d3c46599.png) | Diag.: Shape #11 |
Number of internal points: 6
Required number of internal White stones to kill: 2
Remaining internal moves to capture: 10
Total internal liberties: 12
![[Diagram]](../diagrams/15/61de6a82f007dec03acefe8eb25f6e51.png) | Diag.: Shape #12 |
Number of internal points: 6
Required number of internal White stones to kill: 2
Remaining internal moves to capture: 10
Total internal liberties: 12
![[Diagram]](../diagrams/16/55ef740137837775baf890992635381f.png) | Diag.: Shape #13 |
Number of internal points: 6
Required number of internal White stones to kill: 2
Remaining internal moves to capture: 10
Total internal liberties: 12
![[Diagram]](../diagrams/50/0a46a79b072d7c42210a18758c36b02b.png) | Diag.: Shape #14 |
Number of internal points: 6
Required number of internal White stones to kill: 4
Remaining internal moves to capture: 8
Total internal liberties: 12
![[Diagram]](../diagrams/17/7a0918ab281de6b8855c026b1500976c.png) | Diag.: Shape #15 |
Number of internal points: 6
Required number of internal White stones to kill: 4
Remaining internal moves to capture: 8
Total internal liberties: 12
Seven point shapes
![[Diagram]](../diagrams/23/b7d76d6d7befb2fad21bd698225d7856.png) | Diag.: Shape #16 |
Number of internal points: 7
Required number of internal White stones to kill: 2
Remaining internal moves to capture: 15
Total internal liberties: 17
![[Diagram]](../diagrams/39/d8343e214f4292e8cee9312547d78588.png) | Diag.: Shape #17: Three possible patterns for White. |
Number of internal points: 7
Required number of internal White stones to kill: 3
Remaining internal moves to capture: 14
Total internal liberties: 17
![[Diagram]](../diagrams/24/ddbf0598ef7b1560692c5e4caac03e06.png) | Diag.: Shape #18 |
Number of internal points: 7
Required number of internal White stones to kill: 3
Remaining internal moves to capture: 14
Total internal liberties: 17
![[Diagram]](../diagrams/18/b0ef417c58e92fcabe0a7486a9831b74.png) | Diag.: Shape #19 |
Number of internal points: 7
Required number of internal White stones to kill: 4
Remaining internal moves to capture: 13
Total internal liberties: 17
An eye in the stomach
![[Diagram]](../diagrams/2/b352dadb7b50b3722dcefa7ed0572852.png) | Diag.: Shape #20 |
Number of internal points: 8
Required number of internal White stones to kill: 4
Adding a stone at any of the marked points, Black dies, as White connects at a.
If White starts to actually remove the Black stones from the board, she should not play at a, because this will turn the position into seki.
This is a copy of the living page
"Dead Shapes 2" at
Sensei's Library.
(C) the Authors, published under the OpenContent License V1.0.
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