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Word Ladder is a classic puzzle with a simple rule: turn the starting word into the target word by changing one letter at a time, and every step along the way has to be a real word. COLD to WARM, for example, might go COLD, CORD, WORD, WORM, WARM. The puzzle was popularised by Lewis Carroll in the 1870s, and it is still a great workout for vocabulary and planning. The hard part is not finding a valid word, it is finding one that actually moves you closer to the target. Sometimes the obvious change leads to a dead end and you have to back up and try a different path. The game rewards you for solving ladders in fewer steps, so there is always a reason to replay a level and look for a shorter route. It is a quiet, thinky game that suits a coffee break, and it works on both desktop and mobile.
Mouse or tap: pick the letter you want to change, then choose the new letter Keyboard: type letters where supported
A: Lewis Carroll, the author of Alice in Wonderland, introduced the puzzle in 1877 under the name Doublets.
A: No, any valid path solves the level, but shorter solutions earn more rewards.