L-99: Ninety-Nine Lisp Problems

#81

#82

#83

#84

P80 - Conversions

#85

#86

P82 - Cycle from a given node

#87

P83 - Construct all spanning trees

#89

P85 - Graph isomorphism

#90

#93

P89 - Bipartite graphs

#94

P90 - Eight queens problem

#95

P91 - Knight's tour

#96

P92 - Von Koch's conjecture

#97

P93 - An arithmetic puzzle

#99

P95 - English number words