Antidebug routines x64

Hello Coders, I need some routines to dected a debugger for Windows 64-bit. That is, x64 debuggers (WinDbg, IDA, FDBG...) The common FindWindow tricks are not allowed, I need more "advanced" antidebugger detections. The solution must be coded in FASM (asm) compiled in 64-bit. The coder will deliver a set of functions like: CheckDebugger1() --> returns 1 if debugger found with method 1 CheckDebugger2() --> returns 1? ? if debugger found with method 2 ... ... Please, let? me know how many antidebugger methods you can implement for the project. Thanks, A.