FEZLEDGER IS ONLINE: THE CODEX RULED AND FILED — ONE MONOSPACE INK, DOTTED LEADERS, FIVE REGISTERS, NO ERASURES. ENABLE VIA SETTINGS OR COMMAND PALETTE.

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Bulls and cows

A hidden code of four different digits. Each guess tells you how many are right, and how many are right but misplaced.

10 guesses left
right digit, right place right digit, wrong place

Type four digits to make your first guess.