1. Bi1xBd6 .. Kc6xBd6 .. Rb9xb6+ .. Rj6-j7
2. Re1-e7 .. Kd6-c7 .. Bd7-i12++
1. Bi1xBd6 .. Kc6xBd6 .. Rb9xb6+ .. Rj6xNf6
2. Re1-e7 .. Kd6-c7 .. Bd7-i12++
1. Bi1xBd6 .. Kc6xBd6 .. Rb9xb6+ .. Nj5-i3+
2. j2xNi3 .. Kd6-c7 .. Bd7-i12+ .. Kn7-n8
3. Nf6-d5+ .. #
I'm pretty sure the main idea is to capture the green bishop, followed by a rook move that sets up a discovered check and king capture, with yellow moving the bishop to check green so that green can't counter red's mate threat.
Forgot that the check was open when I edited the position, but there's still a quicker solution.
PGN:
[StartFen4 "R-0,0,0,0-0,0,1,0-0,0,0,0-0,0,0,0-1-x,x,x,yR,2,yK,4,x,x,x/x,x,x,yP,yP,yP,1,yP,yP,2,x,x,x/x,x,x,3,yP,2,yP,1,x,x,x/12,gP,1/2,bP,11/1,yR,yB,11/2,bR,8,gP,2/3,yB,6,gP,1,gP,gK/1,bP,bK,gB,1,rN,3,gR,2,gP,1/9,gN,4/bR,bP,7,gP,2,gP,gR/x,x,x,rN,3,rP,3,x,x,x/x,x,x,2,rP,2,rP,rP,1,x,x,x/x,x,x,1,rR,2,rK,rB,2,x,x,x"]
[Variant "Teams"]
[RuleVariants "EnPassant SelfPartner"]
[CurrentMove "0"]
Difficulty: Easy
Edited from a recent game I had.
Game/Solution: https://www.chess.com/variants/self-partner/game/26722877/84/1