read e d eval $e-$[g=f++&2|4,{a..c}=e%g,e/=g] $[e>3?++d,e-={3..1}:0] 'NRKRBQ;printf ${_:'{,,,}{b,a}--?c--?d--?e--?f--:0:0:5:4:1}&&echo&&. *