![Page 1: 1 of 12 Fred Hansen The Official Fred Spring 05 Wei Qi, Baduk, Go a game of strategy China Korea Japan & others](https://reader035.vdocuments.us/reader035/viewer/2022072008/56649d895503460f94a6eb10/html5/thumbnails/1.jpg)
1 of 12
Fred HansenThe Official Fred
Spring 05
Wei Qi, Baduk, Goa game of strategy
ChinaKorea
Japan & others
![Page 2: 1 of 12 Fred Hansen The Official Fred Spring 05 Wei Qi, Baduk, Go a game of strategy China Korea Japan & others](https://reader035.vdocuments.us/reader035/viewer/2022072008/56649d895503460f94a6eb10/html5/thumbnails/2.jpg)
2 of 12
Why play go?
• Fun• Challenge• Think differently
– not procedural
• A window to the orient • Only one rule
Warning: It takes time to “get” go
![Page 3: 1 of 12 Fred Hansen The Official Fred Spring 05 Wei Qi, Baduk, Go a game of strategy China Korea Japan & others](https://reader035.vdocuments.us/reader035/viewer/2022072008/56649d895503460f94a6eb10/html5/thumbnails/3.jpg)
3 of 12
What does go look like?
• Board with 19 x 19 lines• White and black stones in bowls• On your turn, put a stone on an intersection
![Page 4: 1 of 12 Fred Hansen The Official Fred Spring 05 Wei Qi, Baduk, Go a game of strategy China Korea Japan & others](https://reader035.vdocuments.us/reader035/viewer/2022072008/56649d895503460f94a6eb10/html5/thumbnails/4.jpg)
4 of 12
What is the goal?
• Get the most stones on the board– surround bigger empty space– keep groups alive
• The game ends whenneither player wants to play
– there’s no more space to grab
• In practice not all intersections are filled– when it is clear what color goes there
![Page 5: 1 of 12 Fred Hansen The Official Fred Spring 05 Wei Qi, Baduk, Go a game of strategy China Korea Japan & others](https://reader035.vdocuments.us/reader035/viewer/2022072008/56649d895503460f94a6eb10/html5/thumbnails/5.jpg)
5 of 12
How a game might begin
• Players take turns putting stones
black’s potential territory – 29 points
white’s potential territory – 38 points
• White is ahead
![Page 6: 1 of 12 Fred Hansen The Official Fred Spring 05 Wei Qi, Baduk, Go a game of strategy China Korea Japan & others](https://reader035.vdocuments.us/reader035/viewer/2022072008/56649d895503460f94a6eb10/html5/thumbnails/6.jpg)
6 of 12
How a game might end
• Neither player can gain points
black’s territory – 35 points
white’s territory – 46 points
• White wins
Cannot be part of an immortal group;effectively dead
![Page 7: 1 of 12 Fred Hansen The Official Fred Spring 05 Wei Qi, Baduk, Go a game of strategy China Korea Japan & others](https://reader035.vdocuments.us/reader035/viewer/2022072008/56649d895503460f94a6eb10/html5/thumbnails/7.jpg)
7 of 12
Could black do better?
• Second move too “low”
• Better to be higher; push white lower
![Page 8: 1 of 12 Fred Hansen The Official Fred Spring 05 Wei Qi, Baduk, Go a game of strategy China Korea Japan & others](https://reader035.vdocuments.us/reader035/viewer/2022072008/56649d895503460f94a6eb10/html5/thumbnails/8.jpg)
8 of 12
• A “liberty” is an empty intersection adjacent along a line
• A stone without liberties is dead– It is removed from the board
How does a stone die?
No liberties dead
![Page 9: 1 of 12 Fred Hansen The Official Fred Spring 05 Wei Qi, Baduk, Go a game of strategy China Korea Japan & others](https://reader035.vdocuments.us/reader035/viewer/2022072008/56649d895503460f94a6eb10/html5/thumbnails/9.jpg)
9 of 12
So, what is a liberty?
• A stone’s total liberties are– its own, plus
Liberties for the black stones
4 3 2
3 12
6
• Empty intersections count only once
3 3 3
22
– those of adjacent same-color stones
When it is played, a stone’s own liberties are checked after making any captures.
![Page 10: 1 of 12 Fred Hansen The Official Fred Spring 05 Wei Qi, Baduk, Go a game of strategy China Korea Japan & others](https://reader035.vdocuments.us/reader035/viewer/2022072008/56649d895503460f94a6eb10/html5/thumbnails/10.jpg)
10 of 12
The board pattern must not repeat
• A move is illegal if it leaves a board identical to what it was ever before
• Hence: cannot recapture simple “ko”
One Rule: No repeat
If white captures,
black cannot recapture on the next turn
sometimes black makes a threat, white responds, & black recaptures
a “ko threat”
![Page 11: 1 of 12 Fred Hansen The Official Fred Spring 05 Wei Qi, Baduk, Go a game of strategy China Korea Japan & others](https://reader035.vdocuments.us/reader035/viewer/2022072008/56649d895503460f94a6eb10/html5/thumbnails/11.jpg)
11 of 12
• A group with two holes is immortal
Immortality
Black could capture only by playing in both holes.
• The possibility of two holes is enough
If black plays b, white plays a, and vice versa
ba
![Page 12: 1 of 12 Fred Hansen The Official Fred Spring 05 Wei Qi, Baduk, Go a game of strategy China Korea Japan & others](https://reader035.vdocuments.us/reader035/viewer/2022072008/56649d895503460f94a6eb10/html5/thumbnails/12.jpg)
12 of 12
“First capture”
• Goal – understand capture rules
• Method – play first capture– First player to capture a stone wins– 7 x 7 board makes it faster
![Page 13: 1 of 12 Fred Hansen The Official Fred Spring 05 Wei Qi, Baduk, Go a game of strategy China Korea Japan & others](https://reader035.vdocuments.us/reader035/viewer/2022072008/56649d895503460f94a6eb10/html5/thumbnails/13.jpg)