Phantom Go

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Phantom Go, a Go variant with hidden information. There are two players and a referee, each with its own board. While the players can only see their own board with their own stones, the referee can see all, using his board as reference board with complete information. Players need to ask the referee whether the intended move is legal by pointing to the intersection - if not, he asks for another intersection, until a legal move was found. In case of a capture, the referee announces the number of captured stones and tells the player whose stones were captured which ones, to synchronize the board. The game ends when both players pass. Phantom Go is the KriegSpiel equivalent for Go. Computer Phantom Go was first played at the 12th Computer Olympiad, Amsterdam 2007 and is a domain of Monte-Carlo tree search.

=Computer Olympiads=
 * 12th Computer Olympiad, Amsterdam 2007
 * 13th Computer Olympiad, Beijing 2008
 * 14th Computer Olympiad, Pamplona 2009
 * 15th Computer Olympiad, Kanazawa 2010
 * 16th Computer Olympiad, Tilburg 2011

=See also=
 * Chinese Dark Chess
 * KriegSpiel
 * Monte-Carlo Tree Search

=Selected Publications=
 * Tristan Cazenave (2005). A Phantom-Go Program. Advances in Computer Games 11, pdf
 * Tristan Cazenave, Joris Bosboom (2007). GoLois wins Phantom Go tournament. ICGA Journal, Vol. 30, No. 3, pdf » 12th Computer Olympiad
 * Tristan Cazenave (2009). Golois Wins Phantom Go Tournament. ICGA Journal, Vol. 32, No 1, pdf » 13th Computer Olympiad
 * Tristan Cazenave (2009). Golois wins Phantom Go Tournament. ICGA Journal, Vol. 32, No 2, pdf » 14th Computer Olympiad

=External Links=
 * Phantom Go at Sensei's Library
 * Phantom Go (ICGA Tournaments)

=References=

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