r1b1kb1r/nppp2p1/5p1n/P4q2/4Pp1p/N5PP/P1PPQ3/R1BK1BNR w kq - 0 13
FEN state: r1b1kb1r/nppp2p1/5p1n/P4q2/4Pp1p/N5PP/P1PPQ3/R1BK1BNR w kq - 0 13 ; Best move: e4f5
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at e8, black bishop at f8 and black rook at h8. Black knight at a7, black pawn at b7, black pawn at c7, black pawn at d7 and black pawn at g7. Black pawn at f6 and black knight at h6. White pawn at a5 and black queen at f5. White pawn at e4, black pawn at f4 and black pawn at h4. White knight at a3, white pawn at g3 and white pawn at h3. White pawn at a2, white pawn at c2, white pawn at d2 and white queen at e2. White rook at a1, white bishop at c1, white king at d1, 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 13. White to move.