"If you have no Queens, you can create one by
moving a Drone into a Pawn’s space (or vice
versa) and merging them. Similarly, if you have
no Drones, you can make one by merging two of
your Pawns. (The pieces being merged should
be removed from the board immediately and
swapped for a piece of the combined size.)"
It seems both the pieces you are combining must be on your own board region.
"Your opponent may not 'reject' your move; if a
player moves a piece across the canal, the other
can’t move it back to the same square it was in."
"During the final stages of the game, the action
slows down and may become stagnated. If any
player feels the game has reached a state of
deadlock, during their turn they may “call the
clock.” From that point on, if seven moves go
by in which neither player captures a piece, the
game ends and the final score is computed. If
someone makes a capture, the counter is reset."
"If the final score is tied, and one Zone is empty,
the player who ended the game is the winner.
But if the game ends in a deadlock with a tie, the
result is simply a tie. Play again!"
rules not listed here (from Looney Labs webpage https://www.looneylabs.com/sites/default/files/literature/MartianChess_Rules5.pdf):
"If you have no Queens, you can create one by moving a Drone into a Pawn’s space (or vice versa) and merging them. Similarly, if you have no Drones, you can make one by merging two of your Pawns. (The pieces being merged should be removed from the board immediately and swapped for a piece of the combined size.)"
It seems both the pieces you are combining must be on your own board region.
"Your opponent may not 'reject' your move; if a player moves a piece across the canal, the other can’t move it back to the same square it was in."
"During the final stages of the game, the action slows down and may become stagnated. If any player feels the game has reached a state of deadlock, during their turn they may “call the clock.” From that point on, if seven moves go by in which neither player captures a piece, the game ends and the final score is computed. If someone makes a capture, the counter is reset."
"If the final score is tied, and one Zone is empty, the player who ended the game is the winner. But if the game ends in a deadlock with a tie, the result is simply a tie. Play again!"