[NTG-context] search path for require(...)

I'm trying to store the virtual lua chess fonts I'm currently creating so that latex and context can use them. 1. At first I stored the vf-chess-XX.lua in tex/luatex. This works for latex but not for context. tex/generic works for both. 2. My fonts loads a lua-file which should be shared by all fonts with chessfss=require('chessfss') latex finds the chessfss.lua without problems in various locations (e.g. tex/generic) but context not. How can I solve this problem? -- Ulrike Fischer