or this interpreter of a lazy lambda calculus based language in 25 lines of (obfuscated) C: http://www.ioccc.org/2012/tromp/tromp.c http://www.ioccc.org/2012/t

or this interpreter of a lazy lambda calculus based language in 25 lines of (obfuscated) C: http://www.ioccc.org/2012/tromp/tromp.c http://www.ioccc.org/2012/tromp/tromp.c http://www.ioccc.org/2012/tromp/hint.html http://www.ioccc.org/2012/tromp/hint.html