Public viewer
The journey of every round
Every round-trip in the corpus is public. Open one to see the prompt, the zero-point index, the baseline response, the enhanced response, and how each grader read the difference. Leave a comment if a grader's reading lands — or doesn't.
Write a BackgroundService that reads work items from an in-memory queue and processes each one with a small delay, with graceful shutdown handling.
Write an IMiddleware implementation that adds an X-Request-ID header to every response. Show it being registered in the request pipeline.
The retailer is asking me to wait 4 weeks for a repair on a faulty appliance. Is that reasonable?
I bought clothing that didn't fit and the shop says they don't accept returns. Are my rights limited because it's a fitting issue?
A retailer is refusing to honour a price advertised on its website, claiming it was a mistake. Can I insist?
Goods I bought are not as described in the advertisement. What rights do I have?
I paid a deposit for furniture but the company has gone bust. Can I recover the deposit?
Goods I ordered haven't arrived after 8 weeks. What can I do under UK law?
The shop offered store credit only after a clearly faulty item. Can I demand a cash refund instead?
I bought a faulty laptop with a 12-month manufacturer warranty. The retailer refuses to help. Who do I claim from?
The seller claims their 30-day return policy is firm. Does that override my legal rights?
I changed my mind about an online purchase. How long do I have to return it?
I bought something on sale. Do I still have the same rights as full-price goods?
A second-hand car broke down 2 weeks after I bought it from a dealer. What are my rights?
Goods arrived damaged. Who is responsible — me, the courier, or the seller?
I bought a phone 6 months ago and it's developed a fault. Can I get a repair?
The shop says I cannot return because I lost the receipt. Is that legal?
I bought a sofa that's a different colour than what I saw on the website. What are my rights?
The retailer is offering a credit note instead of a refund. Can I insist on cash?
Find the date with the highest number of new signups in a users table.
Use HAVING to filter aggregate results: orders with more than 5 line items.
Write a SQL query joining 4 tables (customers, orders, line_items, products) to produce a customer-order-product report.
Find products in the top 10 percent by revenue using NTILE.
Calculate the gap in days between consecutive logins per user using LAG.