Difference between revisions of "Havannah"

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Havannah is another [[connection game]], that can be played on [[Little Golem]] and [[igGameCenter]].
 
  
== Board setting ==
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'''Havannah''' is a [[connection game]] created by [[Christian Freeling]].  It can be played on many game sites, including [[Little Golem]] and [[igGameCenter]].
  
Board 8:
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== How to play ==
  
<hex>R15 C15
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The game is played on a hexagonal board of hexagons.  The base-8 and base-10 boards are popular sizes.
Sg1 Sf2 Se3 Sd4 Sc5 Sb6 Sa7
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The base-8 looks like this:
Si15 Sj14 Sk13 Sl12 Sm11 Sn10 So9
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</hex>
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== Rules ==
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<div>&nbsp;</div>
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<hexboard size="15x15"
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  coords="hide"
 +
  edges="none"
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  visible="area(h1,a8,a16,h16,o8,o1)"
 +
  contents=""
 +
  />
 +
 
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The players are identified by two different colors, such as Black and White.
 +
On Black's turn, he or she places a black piece on an empty cell; White does the same with a white piece.
 +
The goal of the game is to be the first player to make a chain that forms one of these winning patterns:
 +
 
 +
* a '''fork''': a connected chain that has pieces on three edges of the board (where corner cells do not belong to any edge)
 +
* a '''bridge''': a connected chain that has pieces on two corner cells
 +
* a '''ring''': a connected chain that has at least one cell (empty or not) on its interior
 +
 
 +
Draws are possible but very rare.
 +
 
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On [[Little Golem]], Havannah on base-8 and smaller boards is played with the [[swap rule]].
  
 
== Links to Problems ==
 
== Links to Problems ==
  
http://www.littlegolem.net/jsp/forum/topic2.jsp?forum=50&topic=324
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Some problems are posted in the [[Little Golem]] forum. Here are links to them:
Problem 1 (size 8), 2008-11-03 by ypercube
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http://www.littlegolem.net/jsp/forum/topic2.jsp?forum=50&topic=329
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http://www.littlegolem.net/jsp/forum/topic2.jsp?forum=50&topic=324 Problem 1 (size 8), 2008-11-03 by ypercube
Problem 2+3 (size 8), 2008-11-17 by jamjam:
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 +
http://www.littlegolem.net/jsp/forum/topic2.jsp?forum=50&topic=329 Problem 2+3 (size 8), 2008-11-17 by jamjam:
  
 
Problem 2: tactical corner/3 sides connect
 
Problem 2: tactical corner/3 sides connect
Line 24: Line 39:
 
Problem 3: count number of moves to connect!
 
Problem 3: count number of moves to connect!
  
http://www.littlegolem.net/jsp/forum/topic2.jsp?forum=1&topic=1985
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http://www.littlegolem.net/jsp/forum/topic2.jsp?forum=1&topic=1985 Problem 4 (size 8), 2009-03-20 by ypercube
Problem 4 (size 8), 2009-03-20 by ypercube
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(in General Forum)
 
(in General Forum)
  
http://www.littlegolem.net/jsp/forum/topic2.jsp?forum=50&topic=334
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http://www.littlegolem.net/jsp/forum/topic2.jsp?forum=50&topic=334 Problem 5 (size 10), 2009-04-20 by Carroll
Problem 5 (size 10), 2009-04-20 by Carroll
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(#1009271 Pascal Huybers vs. Carroll, the first board)
 
(#1009271 Pascal Huybers vs. Carroll, the first board)
  
== Solutions ==
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== Solved board sizes ==
  
 
Size 1 and 2:
 
Size 1 and 2:
* first player wins
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* first player wins  
  
 
Solution for size 3:
 
Solution for size 3:
 
* first move in corner wins
 
* first move in corner wins
* other first move loses
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* other first moves lose
  
 
Size 4:
 
Size 4:
 
* is much more difficult than size 3 and not known yet
 
* is much more difficult than size 3 and not known yet
* probably most first moves are winning (i.e. should be swapped), however e.g. first move on an edge is not clear
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* probably most first moves are winning (i.e. should be swapped), however e.g. first move on an edge is not clear  
  
 
== See Also ==
 
== See Also ==
  
* [[Y]]
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[[Y]]
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== External Links ==
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 +
[http://www.mindsports.nl/index.php/arena/havannah  Havannah on mindsports.nl]
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[http://www.edcollins.com/havannah/  Havannah: the Twilight Zone]
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[http://senseis.xmp.net/?Havannah  Havannah page on Sensei's Library]
 +
 
  
[[category:Other games]]
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[[Category:Other games]]
{{stub}}
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Latest revision as of 04:31, 12 July 2021

Havannah is a connection game created by Christian Freeling. It can be played on many game sites, including Little Golem and igGameCenter.

How to play

The game is played on a hexagonal board of hexagons. The base-8 and base-10 boards are popular sizes. The base-8 looks like this:

 

The players are identified by two different colors, such as Black and White. On Black's turn, he or she places a black piece on an empty cell; White does the same with a white piece. The goal of the game is to be the first player to make a chain that forms one of these winning patterns:

  • a fork: a connected chain that has pieces on three edges of the board (where corner cells do not belong to any edge)
  • a bridge: a connected chain that has pieces on two corner cells
  • a ring: a connected chain that has at least one cell (empty or not) on its interior

Draws are possible but very rare.

On Little Golem, Havannah on base-8 and smaller boards is played with the swap rule.

Links to Problems

Some problems are posted in the Little Golem forum. Here are links to them:

http://www.littlegolem.net/jsp/forum/topic2.jsp?forum=50&topic=324 Problem 1 (size 8), 2008-11-03 by ypercube

http://www.littlegolem.net/jsp/forum/topic2.jsp?forum=50&topic=329 Problem 2+3 (size 8), 2008-11-17 by jamjam:

Problem 2: tactical corner/3 sides connect

Problem 3: count number of moves to connect!

http://www.littlegolem.net/jsp/forum/topic2.jsp?forum=1&topic=1985 Problem 4 (size 8), 2009-03-20 by ypercube

(in General Forum)

http://www.littlegolem.net/jsp/forum/topic2.jsp?forum=50&topic=334 Problem 5 (size 10), 2009-04-20 by Carroll

(#1009271 Pascal Huybers vs. Carroll, the first board)

Solved board sizes

Size 1 and 2:

  • first player wins

Solution for size 3:

  • first move in corner wins
  • other first moves lose

Size 4:

  • is much more difficult than size 3 and not known yet
  • probably most first moves are winning (i.e. should be swapped), however e.g. first move on an edge is not clear

See Also

Y

External Links

Havannah on mindsports.nl

Havannah: the Twilight Zone

Havannah page on Sensei's Library