(game "Dorvon Cag"
    (players 2)
    (equipment {
        (board 
            (remove (concentric {1 4}) edges:{{1 0} {0 3}})
            use:Vertex
        )
        (hand Each)
        (piece "Disc" Each "StepToEmpty")
    })
    (rules 
        (start (place "Disc" "Hand" count:2))
        phases:{
        (phase "Placement" 
            (play 
                (move 
                    (from (handSite Mover)) 
                    (to (sites Empty))
                )
            ) 
            (nextPhase Mover ("HandEmpty" Mover) "Movement")
        ) 
        
        ("PhaseMovePiece" "Movement")
        }
        (end ("BlockWin"))
    )
)

//------------------------------------------------------------------------------

(metadata 
    (info
        {
        (description "Dörvön Cag (The four seasons) is a blockade game played in Mongolia. ")
        (aliases {"Dörvön Cag"})
        (rules "A circle, with four points equally spaced along the circumference, as well as a point in the center. A diameter is drawn between two of the outer points and through the center. Two players. Two pieces per player. Players alternate turns placing a piece on the board. When all of the pieces are placed, players alternate turns moving a piece to an empty adjacent point along the lines. The player who blocks the other player from being able to move wins.")
        (source "Popova 1974: 16-18.")
        (id "1009")
        (version "1.3.12")
        (classification "board/space/blocking")
        (credit "Eric Piette")
        (origin "This game was played in Mongolia, from around 1963 to 1991.")
        }
    )
    
    (ai
        "Dorvon Cag_ai"
    )
)