The complete index — 23 projects on 5 shelves.
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Logic puzzles whose generators prove every board has exactly one answer.
// PROJ_11Web / FrontendSudoku in 4×4, 6×6 or 9×9, filled with nasi lemak, teh tarik or any emoji you type in yourself — every board carved in the browser with exactly one provable solution.
// PROJ_14Web / FrontendSeat one cat per row, column and colour region with none of them touching, on boards from 5×5 to 12×12 — each provably single-answer, with hints that name the technique they used.
// PROJ_19Web / FrontendSimultaneous-round codebreaking for two to six people: everybody hides a number, everybody guesses at once, and the server scores it so no opponent is ever trusted to report a match honestly. Fewest rounds wins; time only breaks ties.
// PROJ_20Web / FrontendA typing test that answers why rather than only how fast: it classifies every error, times the motion between each pair of keys against your own best, names the one thing costing you most, and builds practice text out of it. English, Bahasa Melayu and code. Invite-only cat races against friends, with a handicap that shortens the slower typist’s passage rather than faking the picture.