rn2kb1r/1pp1ppp1/2b2n2/p2p1q1p/P3P3/N2P2PB/1PP2P1P/R1B1QKNR w kq - 0 10
FEN state: rn2kb1r/1pp1ppp1/2b2n2/p2p1q1p/P3P3/N2P2PB/1PP2P1P/R1B1QKNR w kq - 0 10 ; Best move: e4f5
The current state of the chess board is: Black rook at a8, black knight at b8, black king at e8, black bishop at f8 and black rook at h8. Black pawn at b7, black pawn at c7, black pawn at e7, black pawn at f7 and black pawn at g7. Black bishop at c6 and black knight at f6. Black pawn at a5, black pawn at d5, black queen at f5 and black pawn at h5. White pawn at a4 and white pawn at e4. White knight at a3, white pawn at d3, white pawn at g3 and white bishop at h3. White pawn at b2, white pawn at c2, white pawn at f2 and white pawn at h2. White rook at a1, white bishop at c1, white queen at e1, white king 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 10. White to move.