Some modules
NB: Misnomer
Display numbers alongside the game.
game-anchors plus notes
Word data-structure
Word->string
Notes on play
Keep track of moves
Don't just walk the game tree: iterate over anchors.
Keep track of the current word.
Debugging
Notes on sideways "crosscheck"
Debugging
Check for horizontally adjoining words before scoring.
Spacing?
Keep track of word.
Notes on scoring
Keep track of word.
Keep off of game-anchors.
Debug the move-heap.