PUZZLE · CIPHER
Cryptii
Encode and decode ciphers — Caesar, Enigma, base64 — and watch it happen live.
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Encode and decode ciphers — Caesar, Enigma, base64 — and watch it happen live.
PUZZLE · CIPHER
PUZZLE · DAILY
Wordle
Six guesses, one word, one puzzle a day. The game that made everyone share grey and yellow squares.
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PUZZLE · WORD
Semantle
Guess the secret word by meaning rather than letters. Far harder and far more addictive than it sounds.
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PUZZLE · LOGIC
Puzzle Nonograms
Thousands of griddlers from tiny to enormous, with a new one every day.
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PUZZLE · LOGIC
Loop Puzzles
Draw one closed loop that satisfies every clue. Simple rules, genuinely hard.
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PUZZLE · CHESS
Chess Puzzles
Mate in two. Then mate in three. Rated so they get harder exactly as fast as you do.
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PUZZLE · RIDDLE
Puzzling Stack Exchange
Riddles, lateral thinking and cryptic puzzles posed and solved by obsessives.
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