r1b1k1nr/np1pp3/p7/1Qp2ppp/8/P3P3/2P1KPPq/bN3BNR w kq - 0 18
FEN state: r1b1k1nr/np1pp3/p7/1Qp2ppp/8/P3P3/2P1KPPq/bN3BNR w kq - 0 18 ; Best move: b5b6
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 knight at a7, black pawn at b7, black pawn at d7 and black pawn at e7. Black pawn at a6. White queen at b5, black pawn at c5, black pawn at f5, black pawn at g5 and black pawn at h5. White pawn at a3 and white pawn at e3. White pawn at c2, white king at e2, white pawn at f2, white pawn at g2 and black queen at h2. Black bishop at a1, white knight at b1, white bishop at f1, white knight at g1 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.