Squishword

Squishword calls itself daily meaning math. Each day there is a numbered puzzle with two words, and your job is to travel from the first to the second using ideas instead of letters. The examples in its tutorial give the flavour: fire and water meet to make steam, a horse plus a horn gives a unicorn, and a storm splits into rain and wind.

There are four operations. Addition puts a quality, ingredient or part onto a word. Subtraction takes something out, and the rule of thumb is that adding it back should give the original. Joining fuses two words into something that is recognisably both, and splitting breaks a word into its two specific parts. You select a word on the board, pick an operation from the ring around it, type your answer and press Enter.

Every move is judged. A move that does not hold up can simply be tried again, and you can give feedback with a thumbs up or down if you disagree. Your puzzle grade is built from your move grades: reaching the goal is the point, and better grades are extra credit. Undo, delete and reset let you rework the board.

Easy is open play. Medium adds required words that must appear somewhere on your path, and Hard also limits how many of each operation you can use. A calendar shows the week, past puzzles sit in an archive, and a short tutorial walks through each operation. It suits people who enjoy riddles and lateral thinking more than spelling puzzles.