- Speak — Confidence, Communication & NegotiationNew
Build confidence with 21 complete on-site lessons and 32 practice scenarios, in English or Greek. Learn step by step, compare worked examples, and practise speaking, communication and buying or selling negotiations with a timer and optional voice recording.
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The Lit — Research Paper Browser
New
Search papers across Management Science, Operations Research, Marketing Science, M&SOM, POM, Information Systems Research, five PNAS sections, the ACM EC conference (1999–present), all journals of the UTD24 and FT50 lists (plus EJOR), and topic-filtered slices of Nature and Science (GenAI, LLMs, innovation & the science of science) — in one place. Filter by journal type (UTD24, FT50, ABS 4/4*, ABS 3), journal, year, author or affiliation, with editors and areas for Management Science, arXiv/SSRN PDF links for EC papers, and BibTeX export.
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PortfolioFit
New
A strategic project-portfolio packing game: drag project “bricks”, each worth a dollar value, into a frame to maximise net value (minus a $1 penalty per empty cell) before the timer runs out — a hands-on take on the knapsack problem. The tempting high-ROI bricks are often traps.
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Capitals
New
Learn the capital of every country in the world: study a set of ten on cards, then test yourself on them, or play the open quiz, which never asks the same country twice in one visit until the region is done. Graduated hints, a forgiving check that points out small misspellings, and after each answer a world map, a fact card and a country profile: what it is known for, its economy, business, tourism and history. Plays in English or Greek, with progress, streaks and a leaderboard saved under your nickname.
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Οι Νομοί της Ελλάδας
Νέο · στα Ελληνικά
Learn all 51 historical prefectures (νομοί) of Greece and their capitals on an interactive map, then test yourself with two click-the-map quizzes: find a prefecture, and find a prefecture by its capital.
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Rook Battle
Three two-player strategy puzzles of perfect information — Rook Battle, Queen Battle and Rook Battle x2. Outwit the optimal AI on a grid. Plays on mobile, tablet and desktop.
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Sudoku
A clean, modern Sudoku with Easy, Medium and Hard puzzles, each with a unique solution. Light or dark theme, English or Greek, per-number remaining counts, notes, hints, pause, a timer, and your game saved automatically.
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Snake
A modern take on Snake: one snake, many fruits. Eat to grow longer and faster, steering with the mouse or the arrow keys.