r1bqkb1r/p1p1p2p/6p1/np1pn3/N4P2/1PPpQ1K1/P5PP/RNB2B1R w kq - 0 18
FEN state: r1bqkb1r/p1p1p2p/6p1/np1pn3/N4P2/1PPpQ1K1/P5PP/RNB2B1R w kq - 0 18 ; Best move: e3e5
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8, black king at e8, black bishop at f8 and black rook at h8. Black pawn at a7, black pawn at c7, black pawn at e7 and black pawn at h7. Black pawn at g6. Black knight at a5, black pawn at b5, black pawn at d5 and black knight at e5. White knight at a4 and white pawn at f4. White pawn at b3, white pawn at c3, black pawn at d3, white queen at e3 and white king at g3. White pawn at a2, white pawn at g2 and white pawn at h2. White rook at a1, white knight at b1, white bishop at c1, white bishop at f1 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.