rn2k2r/4p1np/5pp1/qppp4/2P1NPb1/Q2PPN1P/PB2BK2/R6R b kq - 1 18
FEN state: rn2k2r/4p1np/5pp1/qppp4/2P1NPb1/Q2PPN1P/PB2BK2/R6R b kq - 1 18 ; Best move: a5a3
The current state of the chess board is: Black rook at a8, black knight at b8, black king at e8 and black rook at h8. Black pawn at e7, black knight at g7 and black pawn at h7. Black pawn at f6 and black pawn at g6. Black queen at a5, black pawn at b5, black pawn at c5 and black pawn at d5. White pawn at c4, white knight at e4, white pawn at f4 and black bishop at g4. White queen at a3, white pawn at d3, white pawn at e3, white knight at f3 and white pawn at h3. White pawn at a2, white bishop at b2, white bishop at e2 and white king at f2. White rook at a1 and white rook at h1. Black kingside and black queenside castles are available. Half move number is 1. Full move number is 18. Black to move.