HexWiki - User contributions [en]

IgGameCenter

2012-01-26T16:36:54Z

Artyomch: fixed the link to the rules page

'''igGameCenter''' is a special on-line game gadget that allows playing abstract board games with other opponents in real-time directly from the site, from the Google Personalized Homepage (iGoogle) or from Facebook.

There are [http://www.iggamecenter.com/info/en/rules.html 100+ games] available at igGameCenter at the moment and the number is growing all the time. Among the games there are 19 different [[Connection_game|connection games]] that can be played on igGameCenter in real-time:

* [[Akron]]
* [[Alta]]
* [[Atoll]]
* [[Chain Lightning]]
* [[CrossWay]]
* [[Gonnect]]
* [[Havannah]]
* [[Hex]]
* [[Lynx]]
* [[Master Y]]
* [[Metamorphosis]]
* [[Mind Ninja]]
* [[Quax]]
* [[Pex]]
* [[Slither]]
* [[Talpa]]
* [[Twixt]]
* [[Unlur]]
* [[Y]]

== Hex ==

Hex can be played with various size (8x8, 9x9, 10x10, 11x11, 12x12, 13x13, 14x14, 15x15 and 19x19) and using the [[swap]] rule.

== Twixt ==

Twixt can be played with various size (18x18 and 24x24) and using the [[swap]] rule. There is an option of playing Twixt with a move or rows handicap.

== See also ==

The creator of igGC: [[user:Artyomch | Arty Sandler]].

== External links ==

* [http://www.iggamecenter.com/ igGameCenter]

[[category:Hex community]]
[[category: online play]]

IgGameCenter

2011-11-21T21:24:16Z

Artyomch:

'''igGameCenter''' is a special on-line game gadget that allows playing abstract board games with other opponents in real-time directly from the site, from the Google Personalized Homepage (iGoogle) or from Facebook.

There are [http://www.iggamecenter.com/rules.html 100+ games] available at igGameCenter at the moment and the number is growing all the time. Among the games there are 19 different [[Connection_game|connection games]] that can be played on igGameCenter in real-time:

* [[Akron]]
* [[Alta]]
* [[Atoll]]
* [[Chain Lightning]]
* [[CrossWay]]
* [[Gonnect]]
* [[Havannah]]
* [[Hex]]
* [[Lynx]]
* [[Master Y]]
* [[Metamorphosis]]
* [[Mind Ninja]]
* [[Quax]]
* [[Pex]]
* [[Slither]]
* [[Talpa]]
* [[Twixt]]
* [[Unlur]]
* [[Y]]

== Hex ==

Hex can be played with various size (8x8, 9x9, 10x10, 11x11, 12x12, 13x13, 14x14, 15x15 and 19x19) and using the [[swap]] rule.

== Twixt ==

Twixt can be played with various size (18x18 and 24x24) and using the [[swap]] rule. There is an option of playing Twixt with a move or rows handicap.

== See also ==

The creator of igGC: [[user:Artyomch | Arty Sandler]].

== External links ==

* [http://www.iggamecenter.com/ igGameCenter]

[[category:Hex community]]
[[category: online play]]

IgGameCenter

2011-04-19T14:10:48Z

Artyomch:

'''igGameCenter''' is a special on-line game gadget that allows playing abstract board games with other opponents in real-time directly from the site, from the Google Personalized Homepage (iGoogle) or from Facebook.

There are [http://www.iggamecenter.com/rules.html 100+ games] available at igGameCenter at the moment and the number is growing all the time. Among the games there are 13 different [[Connection_game|connection games]] that can be played on igGameCenter in real-time:

* [[Atoll]]
* [[CrossWay]]
* [[Gonnect]]
* [[Havannah]]
* [[Hex]]
* [[Master Y]]
* [[Metamorphosis]]
* [[Mind Ninja]]
* [[Quax]]
* [[Pex]]
* [[Talpa]]
* [[Twixt]]
* [[Unlur]]
* [[Y]]

== Hex ==

Hex can be played with various size (8x8, 9x9, 10x10, 11x11, 12x12, 13x13, 14x14, 15x15 and 19x19) and using the [[swap]] rule.

== Twixt ==

Twixt can be played with various size (18x18 and 24x24) and using the [[swap]] rule. There is an option of playing Twixt with a move or rows handicap.

== See also ==

The creator of igGC: [[user:Artyomch | Arty Sandler]].

== External links ==

* [http://www.iggamecenter.com/ igGameCenter]

[[category:Hex community]]
[[category: online play]]

IgGameCenter

2010-02-19T04:02:47Z

Artyomch:

'''igGameCenter''' is a special on-line game gadget that allows playing abstract board games with other opponents in real-time directly from the site, from the Google Personalized Homepage (iGoogle) or from Facebook.

There are [http://www.iggamecenter.com/rules.html 100+ games] available at igGameCenter at the moment and the number is growing all the time. Among the games there are 13 different [[Connection_game|connection games]] that can be played on igGameCenter in real-time:

* [[Atoll]]
* [[CrossWay]]
* [[Gonnect]]
* [[Havannah]]
* [[Hex]]
* [[Master Y]]
* [[Metamorphosis]]
* [[Mind Ninja]]
* [[Quax]]
* [[Pex]]
* [[Twixt]]
* [[Unlur]]
* [[Y]]

== Hex ==

Hex can be played with various size (8x8, 9x9, 10x10, 11x11, 12x12, 13x13, 14x14, 15x15 and 19x19) and using the [[swap]] rule.

== Twixt ==

Twixt can be played with various size (18x18 and 24x24) and using the [[swap]] rule. There is an option of playing Twixt with a move or rows handicap.

== See also ==

The creator of igGC: [[user:Artyomch | Arty Sandler]].

== External links ==

* [http://www.iggamecenter.com/ igGameCenter]

[[category:Hex community]]
[[category: online play]]

User:Artyomch

2009-07-16T19:18:54Z

Artyomch:

Wild combination of software developer and abstract games fan that decided one day to combine the first and the second together, giving birth to [[igGameCenter]].

See Also
http://mancala.wikia.com/wiki/Arty_Sandler

IgGameCenter

2009-05-05T18:20:04Z

Artyomch:

'''igGameCenter''' is a special on-line game gadget that allows playing abstract board games with other opponents in real-time directly from the site or from the Google Personalized Homepage.

There are [http://www.iggamecenter.com/rules.html 80 games] available at igGameCenter at the moment and the number is growing all the time. Among the games there are 13 different [[Connection_game|connection games]] that can be played on igGameCenter in real-time:

* [[Atoll]]
* [[CrossWay]]
* [[Gonnect]]
* [[Havannah]]
* [[Hex]]
* [[Master Y]]
* [[Metamorphosis]]
* [[Mind Ninja]]
* [[Quax]]
* [[Pex]]
* [[Twixt]]
* [[Unlur]]
* [[Y]]

== Hex ==

Hex can be played with various size (8x8, 9x9, 10x10, 11x11, 12x12, 13x13, 14x14, 15x15 and 19x19) and using the [[swap]] rule.

== Twixt ==

Twixt can be played with various size (18x18 and 24x24) and using the [[swap]] rule. There is an option of playing Twixt with a move or rows handicap.

== See also ==

The creator of igGC: [[user:Artyomch | Arty Sandler]].

== External links ==

* [http://www.iggamecenter.com/ igGameCenter]

[[category:Hex community]]

IgGameCenter

2009-03-17T12:42:12Z

Artyomch:

'''igGameCenter''' is a special on-line game gadget that allows playing abstract board games with other opponents in real-time directly from the site or from the Google Personalized Homepage.

There are [http://www.iggamecenter.com/rules.html 76 games] available at igGameCenter at the moment and the number is growing all the time. Among the games there are 14 different [[Connection_game|connection games]] that can be played on igGameCenter in real-time:

* [[Atoll]]
* [[CrossWay]]
* [[Gonnect]]
* [[Havannah]]
* [[Hex]]
* [[Master Y]]
* [[Metamorphosis]]
* [[Mind Ninja]]
* [[Quax]]
* [[Pex]]
* [[Twixt]]
* [[Unlur]]
* [[Y]]

== Hex ==

Hex can be played with various size (8x8, 9x9, 10x10, 11x11, 12x12, 13x13, 14x14, 15x15 and 19x19) and using the [[swap]] rule.

== Twixt ==

Twixt can be played with various size (18x18 and 24x24) and using the [[swap]] rule. There is an option of playing Twixt with a move or rows handicap.

== See also ==

The creator of igGC: [[user:Artyomch | Arty Sandler]].

== External links ==

* [http://www.iggamecenter.com/ igGameCenter]

[[category:Hex community]]

Online playing

2009-03-15T01:31:16Z

Artyomch:

Hex can be played online either using a web-based format or via e-mail.

==Web-based games==
Web-based games can be played either in ''real-time'', where moves are made within minutes (or even seconds), or ''turn-based'', where a player has days for one move.

The most popular sites are
* [[boardspace]] for real-time play
* http://www.ludoteka.com/ for real-time play
* http://games.wtanaka.com/hex for real-time or turn-based play
* [[Little Golem]] for turn-based play
* less popular but also turn based is [http://www.gamerz.net/pbmserv Richard's server]. One can play completely by e-mail, but it also has a [http://www.gamerz.net/pbmserv/List.php?Hex graphical interface] now. Furthermore any sized board is supported.
* [[igGameCenter]] (http://www.iggamecenter.com/) for real-time play, with time settings, and ranking.

==E-mail-based games==

Hex may also be played over e-mail, in a turn-based fashion. The board can be represented in ASCII using either the full or compact formats below. The full layout is rotated 90 degrees from the compact one. (A fixed-width font is required for either board to display correctly in an e-mail client.)

<pre>
Full layout:

O _ X
O _/ \_ X
O _/ \_/ \_ X
O _/ \_/ \_/ \_ X
O _/ \_/ \_/ \_/ \_ X
O _/ \_/ \_/ \_/ \_/ \_ X
O _/ \_/ \_/ \_/ \_/ \_/ \_ X
O _/ \_/ \_/ \_/ \_/ \_/ \_/ \_ X
_/ \_/ \_/O\_/ \_/ \_/ \_/ \_/ \_
/ \_/ \_/ \_/ \_/X\_/ \_/ \_/ \_/ \
\_/ \_/ \_/ \_/ \_/ \_/ \_/ \_/ \_/
X\_/ \_/ \_/O\_/O\_/X\_/ \_/ \_/O
X\_/ \_/ \_/ \_/ \_/ \_/ \_/O
X\_/ \_/ \_/X\_/ \_/ \_/O
X\_/ \_/ \_/ \_/ \_/O
X\_/ \_/ \_/ \_/O
X\_/ \_/ \_/O
X\_/ \_/O
X\_/O

Compact layout:
/.\
/. .\
/. . .\
X /. . . .\ O
/. . . . .\
/. . . O . .\
/. . O . . . .\
/. . . . . . . .\
. . X O X . . . .
\. . . . . . . ./
\. . X . . . ./
\. . . . . ./
\. . . . ./
O \. . . ./ X
\. . ./
\. ./
\./
</pre>

[[category: Hex community]]

Iggamecenter

2009-03-15T01:29:17Z

Artyomch:

#REDIRECT [[igGameCenter]]

IgGameCenter

2009-03-15T01:27:20Z

Artyomch:

'''igGameCenter''' (http://www.iggamecenter.com/) is a special on-line game gadget that allows playing abstract board games with other opponents in real-time directly from the site or from the Google Personalized Homepage.

There are [http://www.iggamecenter.com/rules.html 76 games] available at igGameCenter at the moment and the number is growing all the time. Among the games there are 14 different [[Connection_game|connection games]] that can be played on igGameCenter in real-time:

* [[Atoll]]
* [[CrossWay]]
* [[Gonnect]]
* [[Havannah]]
* [[Hex]]
* [[Master Y]]
* [[Metamorphosis]]
* [[Mind Ninja]]
* [[Quax]]
* [[Pex]]
* [[Twixt]]
* [[Unlur]]
* [[Y]]

Iggamecenter

2009-03-15T01:26:26Z

Artyomch:

Havannah

2009-03-15T01:18:54Z

Artyomch:

Havannah is another [[connection game]], that can be played on [[Little Golem]] and [[igGameCenter]].

== Board setting ==

Board 8:

<hex>R15 C15
Sg1 Sf2 Se3 Sd4 Sc5 Sb6 Sa7
Si15 Sj14 Sk13 Sl12 Sm11 Sn10 So9
</hex>

== Rules ==

== See Also ==

* [[Y]]

[[category:Other games]]
{{stub}}

Y

2008-06-08T07:26:35Z

Artyomch: /* On the web */

The game of Y is a [[connection game]] invented by [[Craige Schenstead]] and [[Charles Titus]]. In its original form, it is played on a [[triangular grid of hexagons]]. There are two [[Player (general)|players]], who have one colour each, and a move consists of placing a piece of your colour in one of the hexagons on the board. The winner is the first player to complete a [[chain]] connecting all three sides of the board. Y is a kind of generalisation of [[Hex]], perhaps the one the nearest from it, but there are some strategic peculiarities, such as [[corner template]]s

[[Image:Y-board-straight.gif]]

== No draws ==

Y cannot end in a draw. That is, once the board is complete there must be one and only one winner.

=== Less than two winners ===
There cannot be two winners at the same time. If there were, each player would have a region of the board touching all three sides of the triangle as well as the opponent's region. Considering the three sides as regions themselves, this gives a map of five regions, each of which is adjacent to the other four. However, this is impossible, as the graph K5 is non-planar.

=== At least one winner ===
It can be proved by an algorithm that once a board is complete there is at least one player linking the 3 sides. Let the "state" of a board refer to the answer to the question "Is there at least one winner?" We want to prove that the state of every board is "Yes".

''First step'': if there is a pawn group (red for instance) completely surrounded by the opponent (blue for instance) let's consider the board with this pawn group replaced by opponent's pawns (blue ones). The new board has the same status as the older one as the remote group was not winning and the new big (blue) one is winning iff it was in the former board. Also note that there is still at least one group left.

Repeat this step until there is no completely surrounded group more (of either color). The board obtained has the same state as the original.

''Second step'': if there is a pawn group surrounded by the opponent and a side, removing it does not change the state of the board (for similar reasons as in step 1) and there is still at least one group left.

Repeat this step.

''Third step'': if there is a pawn group surrounded by the opponent and two sides removing it does not change the state of the board (for similar reasons as in step 1) and there is still at least one group left.

Repeat this step.

It is quite clear that after applying this algorithm there is no group connected to more than 1 opponent's groups. No group is connected to zero sides and one opponent's group, no group is connected to one side and one opponent's group, no group is connected to two sides and one opponent's group. No group can be connected to 0 1 or 2 sides without connecting an opponent group. Moreover there is at least one group left. Hence this group left is connected to 3 sides.

So the state of the board is "yes"; as it is the same as the state of the beginning board, there was a winner to begin with.

Note that this algorithm ends because the number of different groups is finite.

=== Extension to [[Hex]] ===

The proof above extends to Hex because a Hex game can be seen as a subset of a Y game.

For instance consider the following Y board of size 8. (The star marked hexes are not a part of the board.)
<hex> C8 R8
1:SSSSSSS_
2:SSSSSS__
3:SSSSS___
4:SSSS____
5:SSS_____
6:SS______
7:S_______</hex>

We can simulate a Hex game of [[size]] 4 on it.
<hex> C8 R8
1:SSSSSSSR
2:SSSSSSRR
3:SSSSSRRR
4:SSSSRRRR
5:SSSB____
6:SSBB____
7:SBBB____
8:BBBB____</hex>

Now the only way to win for Blue is to cross the board horizontally, whereas the only way for Red to do so is to cross the board verticaly.

Each game of Hex on size n Hex board can be played on a Y board of size 2n with the rules of Y, player just need to play some stones to "construct" the Hex board.

== The first player wins ==
In Y the [[strategy-stealing argument]] can be applied. It proves that the second player has no winning strategy. The argument is that if the second player had a winning strategy, then the first player could chose a random first move and then pretend that she is the second player and apply the stratey. An important point is that an extra pawn is not a disadvantage in Y. Y is a complete and perfect information game in wich no draw can be conceived, so there is a winning strategy for one player. The second player has no winning strategy so the first player has one.

== Swap ==

The [[Swap rule]] can be used in Y too, the corner are bad moves to be played so there may well exist average moves to begin with. Further information on [[where to swap (y)|where to swap]].

== Variations ==
The game is usually played with the [[swap_rule]]. Alternatively, one can play Double-move Y, also known as [[Master Y]]: The first player places one piece on the board, and each subsequent move consists of placing two pieces on the board. This is a pretty challenging variant, even on small boards.

The inventors tried out a number of alternative playing grids, and eventually concluded that the most suitable one is the following. The pieces are placed on the intersections (like in [[Go]]).

[[Image:Y-board-bent.gif]]

== See also ==

You can find more boards here: [[Printable Y boards]]

Help for [[programming the bent Y board]]

Try this [[Y puzzle]].

== On the web ==

* http://www.gamepuzzles.com/gameofy.htm
* http://www.gamepuzzles.com/revugy.htm (Games magazine reviews)
* http://home.flash.net/~markthom/html/the_game_of_y.html
* http://www.iggamecenter.com/ ('''igGameCenter''' - play "Y" online with other opponents from your iGoogle homepage)

[[Category: Y]]
[[Category: Theory]]

Y

2007-12-23T11:45:24Z

Artyomch: /* On the web */

The game of Y is a [[connection game]] invented by [[Craige Schenstead]] and [[Charles Titus]]. In its original form, it is played on a [[triangular grid of hexagons]]. There are two [[Player (general)|players]], who have one colour each, and a move consists of placing a piece of your colour in one of the hexagons on the board. The winner is the first player to complete a [[chain]] connecting all three sides of the board.

[[Image:Y-board-straight.gif]]

== No draws ==

Y cannot end in a draw. That is, once the board is complete there must be one and only one winner.

=== Less than two winners ===
There cannot be two winners at the same time. If there were, each player would have a region of the board touching all three sides of the triangle as well as the opponent's region. Considering the three sides as regions themselves, this gives a map of five regions, each of which is adjacent to the other four. However, this is impossible, as the graph K5 is non-planar.

=== At least one winner ===
It can be proved by an algorithm that once a board is complete there is at least one player linking the 3 sides. Let the "state" of a board refer to the answer to the question "Is there at least one winner?" We want to prove that the state of every board is "Yes".

''First step'': if there is a pawn group (red for instance) completely surrounded by the opponent (blue for instance) let's consider the board with this pawn group replaced by opponent's pawns (blue ones). The new board has the same status as the older one as the remote group was not winning and the new big (blue) one is winning iff it was in the former board. Also note that there is still at least one group left.

Repeat this step until there is no completely surrounded group more (of either color). The board obtained has the same state as the original.

''Second step'': if there is a pawn group surrounded by the opponent and a side, removing it does not change the state of the board (for similar reasons as in step 1) and there is still at least one group left.

Repeat this step.

''Third step'': if there is a pawn group surrounded by the opponent and two sides removing it does not change the state of the board (for similar reasons as in step 1) and there is still at least one group left.

Repeat this step.

It is quite clear that after applying this algorithm there is no group connected to more than 1 opponent's groups. No group is connected to zero sides and one opponent's group, no group is connected to one side and one opponent's group, no group is connected to two sides and one opponent's group. No group can be connected to 0 1 or 2 sides without connecting an opponent group. Moreover there is at least one group left. Hence this group left is connected to 3 sides.

So the state of the board is "yes"; as it is the same as the state of the beginning board, there was a winner to begin with.

Note that this algorithm ends because the number of different groups is finite.

=== Extension to [[Hex]] ===

The proof above extends to Hex because a Hex game can be seen as a subset of a Y game.

For instance consider the following Y board of size 8. (The star marked hexes are not a part of the board.)
<hex> C8 R8
1:SSSSSSS_
2:SSSSSS__
3:SSSSS___
4:SSSS____
5:SSS_____
6:SS______
7:S_______</hex>

We can simulate a Hex game of [[size]] 4 on it.
<hex> C8 R8
1:SSSSSSSR
2:SSSSSSRR
3:SSSSSRRR
4:SSSSRRRR
5:SSSB____
6:SSBB____
7:SBBB____
8:BBBB____</hex>

Now the only way to win for Blue is to cross the board horizontally, whereas the only way for Red to do so is to cross the board verticaly.

Each game of Hex on size n Hex board can be played on a Y board of size 2n with the rules of Y, player just need to play some stones to "construct" the Hex board.

== The first player wins ==
In Y the strategy-stealing argument can be applied. It proves that the second player has no winning strategy. The argument is that if the second player had a winning strategy, then the first player could chose a random first move and then pretend that she is the second player and apply the stratey. An important point is that an extra pawn is not a disadvantage in Y. Y is a complete and perfect information game in wich no draw can be conceived, so there is a winning strategy for one player. The second player has no winning strategy so the first player has one.

== Swap ==

The [[Swap rule]] can be used in Y too, the corner are bad moves to be played so there may well exist average moves to begin with. Further information on [[where to swap (y)|where to swap]].

== Variations ==
The game is usually played with the [[swap_rule]]. Alternatively, one can play [[Double-move Y]]: The first player places one piece on the board, and each subsequent move consists of placing two pieces on the board. This is a pretty challenging variant, even on small boards.

The inventors tried out a number of alternative playing grids, and eventually concluded that the most suitable one is the following. The pieces are placed on the intersections (like in [[Go]]).

[[Image:Y-board-bent.gif]]

== See also ==

You can find more boards here: [[Printable Y boards]]

Help for [[programming the bent Y board]]

Try this [[Y puzzle]].

== On the web ==

* http://www.gamepuzzles.com/gameofy.htm
* http://www.gamepuzzles.com/revugy.htm (Games magazine reviews)
* http://home.flash.net/~markthom/html/the_game_of_y.html
* http://www.googlegamecenter.com/ ('''igGameCenter''' - play "Y" online with other opponents from your iGoogle homepage)

[[Category: Y]]