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On each turn, the player may drop up to 4 pieces on empty cells. Such cells must be on an orthogonal line of sight of a friendly piece already on board (the cells in between being empty). Drops are sequential, not simultaneous.

None of the new stones may be part of the same group

Groups with no liberty are captured (as in Go).

When both pass, the winner is whoever has more area plus pieces
(Chinese Go scoring).

Pie rule: 13444 mutator.
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Initial moves on a square board:

a b c d e f g h i j k l m       XX            OO
                               =====================
. . . . . . . . . . . . .   1  i3             cgk7
. . . . . . . . . . . . .   2  bg3 g11 b7     il7 i11 l12
. x x . . . x . x . o . .   3
. . . . . . . . . . . . .   4
. . . . . . . . . . . . .   5
. . . . . . . . . . . . .   6
. x o . . . o . O . o O .   7
. . . . . . . . . . . . .   8
. . . . . . . . . . . . .   9
. . . . . . . . . . . . .  10
. . o . . . x . O . x . .  11
. . . . . . . . . . . O .  12
. . . . . . . . . . . . .  13