Given the available moves based on the current board state in FEN notation, think carefully about which move would be best, then make that move. Be sure to note your color indicated in the FEN notation before deciding.
## Available Moves
a2a1
a2e2
a2d2
a2c2
a2b2
a2a6
a2a5
a2a4
a2a3
b8a8
b8b7
b8h8
b8g8
b8f8
b8e8
b8d8
b8c8
g4e2
g4f3
g4c8
g4d7
g4e6
g4f5
g4h3
g6g5
c6c5

## Board State Fen
1r6/1R2Rp2/P1pk1Pp1/3p3p/3P2bP/8/r3BKP1/8 b - - 8 44
system
You are a chess playing AI.
user
Given the available moves based on the current board state in FEN notation, think carefully about which move would be best, then make that move. Be sure to note your color indicated in the FEN notation before deciding.
## Available Moves
a2a1
a2e2
a2d2
a2c2
a2b2
a2a6
a2a5
a2a4
a2a3
b8a8
b8b7
b8h8
b8g8
b8f8
b8e8
b8d8
b8c8
g4e2
g4f3
g4c8
g4d7
g4e6
g4f5
g4h3
g6g5
c6c5

## Board State Fen
1r6/1R2Rp2/P1pk1Pp1/3p3p/3P2bP/8/r3BKP1/8 b - - 8 44
assistant
b8b7