Sets of words
Puzzles
- garble.groupsDesign a combination lock with *letters* instead of digits, with the added restriction that each... New
- ladderFind the shortest word ladders stretching between the following pairs: hit - ace pig - sty four - five play... Added material
- noncrashingFind as large a set as possible of six-letter words, no two of which have the same letter in the same... New
- nots.and.crossesWhat is the most number of letters that can be fit into a three by three grid of words, such that no letter...
- perfect.ladderA "perfect" ladder comprises five-letter words where every letter is the new letter once, no position is...
- squaresWhat are some exceptional word squares (square crosswords with no blanks)? Added material
- threepeatersForm the shortest list of six-letter words in which each word in the list has as its second, fourth, and...
- transposal.squaresWhat are the largest known regular transposal squares and double transposal rectangles? New
- variogramWhat is the largest known variogram (word square where repeated letters count as one square)?
- word.tortureWhat is the longest word all of whose contiguous subsequences are words?