Instructions        rec.puzzles Archive (Instructions), part 01 of 35
analysis            rec.puzzles Archive (analysis), part 02 of 35
arithmetic/
combinatorics       rec.puzzles Archive (combinatorics), part 05 of 35
competition/
decision            rec.puzzles Archive (decision), part 12 of 35
geometry/
group               rec.puzzles Archive (group), part 15 of 35
induction           rec.puzzles Archive (induction), part 16 of 35
language/
logic/
physics             rec.puzzles Archive (physics), part 27 of 35
pickover/
probability         rec.puzzles Archive (probability), part 31 of 35
real-life           rec.puzzles Archive (real-life), part 32 of 35
references          rec.puzzles Archive (references), part 33 of 35
series              rec.puzzles Archive (series), part 34 of 35
trivia              rec.puzzles Archive (trivia), part 35 of 35