r1b1k1nr/1pp2p1p/p3n1p1/3p4/4p3/bPPPPBPN/2QN1P1P/R1B1K2R w kq - 0 18
FEN state: r1b1k1nr/1pp2p1p/p3n1p1/3p4/4p3/bPPPPBPN/2QN1P1P/R1B1K2R w kq - 0 18 ; Best move: d3e4
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at e8, black knight at g8 and black rook at h8. Black pawn at b7, black pawn at c7, black pawn at f7 and black pawn at h7. Black pawn at a6, black knight at e6 and black pawn at g6. Black pawn at d5. Black pawn at e4. Black bishop at a3, white pawn at b3, white pawn at c3, white pawn at d3, white pawn at e3, white bishop at f3, white pawn at g3 and white knight at h3. White queen at c2, white knight at d2, white pawn at f2 and white pawn at h2. White rook at a1, white bishop at c1, white king at e1 and white rook at h1. Black kingside and black queenside castles are available. Half move number is 0. Full move number is 18. White to move.