H. G. Muller wrote on Mon, Nov 25, 2019 07:50 PM UTC:
That is because Nebiyu is an engine, and engines are not supposed to be used directly, but only through mediation of a Graphical User Interface like WinBoard. It is then WinBoard which will take care of launching the engine's .exe file, and send it the proper (text) commands to do something useful.
So the proper procedure is to start WinBoard (either as game viewer without any engine, or for playing against some other engine), then open the Engine -> Load first Engine menu dialog, use the 'browse button' behind the 'Engine' text entry to locate NebiyuAlien.exe, and then 'OK' the dialog. This will make WinBoard start Nebiyu in the background, (possibly terminating the engine that was in use before), and consult it through the appropriate communication whenever it needs it to make or suggest a move. You can then select one of the supported variants from the File -> New Variant dialog.
This procedure will also add NebiyuAlien to WinBoard's 'Engine List', which will be displayed in a listbox on the left in the Load Engine dialogs, so that you can just click on it when you want to use it again in a later session, without having to browse for it first. This Engine List will also be displayed in the comboboxes of WinBoard's Startup Dialog, so that a next time when you start WinBoard you can select Nebiyu immediately, as first or as second engine. (A second engine is only needed when you want to play two engines against each other, through the Mode -> Two Machines menu item.)
That is because Nebiyu is an engine, and engines are not supposed to be used directly, but only through mediation of a Graphical User Interface like WinBoard. It is then WinBoard which will take care of launching the engine's .exe file, and send it the proper (text) commands to do something useful.
So the proper procedure is to start WinBoard (either as game viewer without any engine, or for playing against some other engine), then open the Engine -> Load first Engine menu dialog, use the 'browse button' behind the 'Engine' text entry to locate NebiyuAlien.exe, and then 'OK' the dialog. This will make WinBoard start Nebiyu in the background, (possibly terminating the engine that was in use before), and consult it through the appropriate communication whenever it needs it to make or suggest a move. You can then select one of the supported variants from the File -> New Variant dialog.
This procedure will also add NebiyuAlien to WinBoard's 'Engine List', which will be displayed in a listbox on the left in the Load Engine dialogs, so that you can just click on it when you want to use it again in a later session, without having to browse for it first. This Engine List will also be displayed in the comboboxes of WinBoard's Startup Dialog, so that a next time when you start WinBoard you can select Nebiyu immediately, as first or as second engine. (A second engine is only needed when you want to play two engines against each other, through the Mode -> Two Machines menu item.)