1r1qkb2/2p1p1pr/p2p1n2/Pp3pBp/bn1N4/3PP3/RPPK1PPP/1N1Q1BR1 w - - 2 18
FEN state: 1r1qkb2/2p1p1pr/p2p1n2/Pp3pBp/bn1N4/3PP3/RPPK1PPP/1N1Q1BR1 w - - 2 18 ; Best move: a2a4
The current state of the chess board is: Black rook at b8, black queen at d8, black king at e8 and black bishop at f8. Black pawn at c7, black pawn at e7, black pawn at g7 and black rook at h7. Black pawn at a6, black pawn at d6 and black knight at f6. White pawn at a5, black pawn at b5, black pawn at f5, white bishop at g5 and black pawn at h5. Black bishop at a4, black knight at b4 and white knight at d4. White pawn at d3 and white pawn at e3. White rook at a2, white pawn at b2, white pawn at c2, white king at d2, white pawn at f2, white pawn at g2 and white pawn at h2. White knight at b1, white queen at d1, white bishop at f1 and white rook at g1. Both players have exhausted their castles. Half move number is 2. Full move number is 18. White to move.