ASPast paper9618 Paper 11 · May/Jun 20252026196 views
بِسْمِ اللَّهِ الرَّحْمَٰنِ الرَّحِيمِ
Free forever · 2210 · 0478 · 9618
Stop revising.
Start running it.
Notes, sorted past papers that mark themselves, code that runs and an AI tutor — free, for 2210 · 0478 · 9618.
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No sign-up.No paywall.Progress saved on your phone.Made in Karachi, used worldwide.
cswithzak.com — the tour
Site tourTry it — right here, right now
grade.pseudo · CAIE 9618
Press Run — this is a real interpreter, not a picture.
Just landed · updated 18 Oct 2026
What's new on CS with ZAK
AskZ now reads your photos and papers, the real past paper marks itself end to end, and every page has its own help. Here's what changed — on the website and in the ZAPP app.
New17 Oct 2026
ZAK's books: prices, sets and ordering in a few taps
Every book, workbook and ebook now shows its price, and each level has a set of two books and two workbooks that costs less than its parts. Add it to your basket and the order goes straight to the books desk on WhatsApp.
- Sets for O Level (current and new syllabus), AS, A2 and Full A Level
- Black and white, full colour or ebook
- Free delivery on every printed set in Pakistan
- Printed fresh for your order, delivered in 7–10 working days
Choose your set
New16 Oct 2026
University Planner and CS admission deadlines
Tick your A Levels and see which Computer Science, Software Engineering, AI, Data Science and Computer Engineering degrees stay open in Pakistan and abroad — with the reason and each university's own rule. Every admission date we could verify is in one calendar.
- What if I drop Physics? See what closes
- IBCC equivalence calculator, IBCC's own method
- Parents' table as a PDF
- UCAS, SAT, AP CS, TMUA, NUST, LUMS, IBA, Habib dates in your calendar
Open the planner
Also new · 4
Improved18 Oct 2026A calmer site: fewer choices, one clear next stepEvery page now asks one thing at a time. Coming back? The home page opens on Continue with today's three tasks. New here? Pick your level and start. Nothing was removed: every page is one click away, and the footer still lists them all.See the new home page New17 Oct 2026Listen to ZAK's ebooksPress the headphones in the ebook reader and the chapter is read to you, with each sentence and word lit up on the page as it is spoken. Your device's voice starts at once and works offline; the AskZ voice gives a natural teacher's voice.Try the free sample chapters Improved17 Oct 2026Games on the topics you've studied so farHaven't finished the syllabus yet? Pick What I've studied in any game, tick the topics your class has covered, and the quiz, flashcard, trace and escape games ask only about those. The list is shared by every game.Play a game Improved17 Oct 2026Ask Z answers university and parents' questionsAsk Z now answers which degrees your A Levels keep open, entry tests, IBCC and admission dates, straight from the University Planner's checked sources. Parents can ask it anything about the site and their child's progress.Ask Z a question
Three ways in
Learn it. Practise it. Ask about it.
Everything on the site sits behind one of these. Start with whichever you need today.
Learn
Read, watch, understand
30 topics in syllabus order, each with Smart Notes, ZAK's lectures, infographics and key terms.
- 30
- topics
- 572
- lectures
Practise
Real questions, marked for you
Every Cambridge question since 2015 by topic, with the mark scheme and the examiner's comment — plus quick rounds.
- 2,415
- exam questions
- 1,430
- quiz questions
Ask
Stuck? Ask, any time
AskZ knows the syllabus and this whole site. It explains, marks your answer and reads a photo of your question.
- 24/7
- day and night
- Free
- always
2,415
real exam questions, by topic
1,430
auto-marked quiz questions
30
topics, each with Smart Notes + assignments
65
exam-ready infographics
435
runnable examples in 7 languages
522
hours of video lectures, by topic
2015→
every past paper since
Zafar Ali Khan
O & A Level Computer Science Educator · Entrepreneur · Programmer at Heart · President & Co-founder, ByteCorp · Creator of AskZ
The person behind the site
“I am not a teacher.
I am an awakener.”
A proud Pakistani educator, entrepreneur and programmer at heart: twenty-five years of O and A Level Computer Science (0478, 2210, 9618) across Karachi's most renowned institutes, thousands of students, A*s and CAIE distinctions every session, and an online following of 65,000+ wherever CAIE CS is offered. ZAK built this free platform because the resources students actually needed did not exist — so he wrote the interpreter, sorted the papers, shot the lectures and trained the tutor himself.
- The City School
- Beaconhouse
- Alpha College
- Cedar College
- Whales College
- Sceptre College
- Nixor College
- Foundation Public School
- Credo
- Heuser College
- Reads College
- DHA Public School
Testimonials
What students say.
Real students, real schools, real results — every testimonial is submitted with credentials and approved by ZAK before it appears.
O Level / IGCSE Featured
I had the privilege of being taught Computer Science by Sir Zafar Ali Khan during my O and A Levels, and I will always be deeply grateful that I was his student. He is an exceptional teacher, but what I value most is the genuine care, generosity and selflessness he has always shown me. He gave me his time, knowledge and support so freely, often going far beyond what anyone could expect from a teacher. Much of the confidence and passion for learning that I carried forward in life began in his classroom, and I truly believe his influence played a part in the person I became. Even years later, he has never hesitated to guide or help me whenever I have reached out. Some teachers leave you with good grades Sir Zafar left me with something far more lasting. I can never fully thank him for everything he has done for me, and I feel incredibly fortunate to still call him my mentor.
A Level Featured
ZAK didn’t just teach Computer Science; he had an incredible way of inspiring and uplifting his students. From supporting us in the classroom to being there for us and responding even after class hours, ZAK always went above and beyond. The love for CS that I developed started with his classes, and I’m genuinely grateful for that foundation. With technology evolving so rapidly, I can only imagine how much more enriching the experience of learning from him must be today
A Level Featured
I was fortunate to study A-level Computer Science with this teacher in Pakistan. He made the classroom welcoming, explained difficult concepts clearly, and always made learning enjoyable. His teaching has stayed with me well beyond A-levels. The foundation he gave me in computer science, especially low-level languages, has been incredibly helpful as I study at Simon Fraser University in Canada. Many of the concepts we covered and assignments we completed prepared me for my first- and second-year university courses. He is a friendly, dedicated, and truly excellent teacher. I’m grateful for the confidence and strong foundation he helped me build.
Cambridge · Edexcel · AQA · OCR · WJEC Eduqas · CCEA · IB
Every board.
Every subject.
Ask Z.
Revision that knows your syllabus. AskZ began here with Computer Science; at askzbot.com the same tutor covers every subject on seven boards, with the real paper structure and marking that follows the mark scheme.
45 days free. No card.Then Free forever, or pay per subject for the ones you sit.
Sitting Cambridge Computer Science? It is complimentary, in full, right here — start on cswithzak.com.
Free forever
- Yearly full past papers, free forever
- Every syllabus point, mapped to papers
- Topic one of every subject: notes, questions, flashcards
- The tutor answers every day on the Free plan
01
Pick your syllabus
Choose your board and the exact code you are entered for. Series, syllabus years and the official PDF come with it.
02
Practise with real paper structure
Papers, command words, mark tags like [3] and timings match the exam, so nothing on the day looks new.
03
AskZ marks and explains
Type or photograph an answer. AskZ marks it against the mark scheme and shows the marks you lost and why.
For Students
Pick the subjects you sit this session. They're yours until the last paper.
Find your subject →
For Parents
One Family plan pools subjects across up to four students — every board, one bill.
Family plan →
For Tutors
Your students' syllabus, papers and marking in one place, so lessons start from the mark scheme.
Plans →
For Schools
Campus seats give every student every subject, with the real paper structure for every board you offer.
Campus →
askzbot.com is the AskZ platform for every board and every subject. Computer Science stays free here on cswithzak.com.
Every May
ZAKATHON
Marathon revision workshops right before the CAIE papers. Started as an experiment with a few students in a room, now fills an auditorium every year.
About the endeavourLearn with ZAK in person
Small-group classes for O Level, AS and A2 across 5 centres in Karachi, plus live online sessions for students anywhere.
Centres & registration Cloud drives
Success Packs
Everything ZAK gives his own students, in one drive. ZAK's notes, tests and mocks plus every CAIE paper, mark scheme and examiner report — one drive per level, updated every session.
What's insideWatch ZAK teach it
Every lecture, indexed by syllabus topic.
572 videos — 522 hours — from ZAK's YouTube channel, each tagged with the topic it teaches. New uploads land here on their own. These are the latest; press play.
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From the blog
Exam technique, study skills, real talk.
72 posts from ZAK, pulled live from the blog.
- Why every cover of my new books is a heat map of the examBismillah. For years students have asked me one question more than any other: "Sir, which book should I follow?" Today I can finally give a complete answer. · 2 min · Blogger
- The 7 Pseudocode Mistakes That Cost You Marks in Paper 2Forgetting ENDIF, using ELSE IF, off-by-one FOR loops — the examiner has seen every one of these. Here's the checklist to run before you put your pen down. · 6 min
- How to Read a Mark Scheme Like an ExaminerThe mark scheme is the closest thing to the examiner's brain. Learn what 'any two from' really means, why command words matter, and how to stop dropping easy marks. · 5 min
Your A* starts with one topic.
Pick a level, open a topic, read the notes, run a bit of pseudocode — or Python, SQL, assembly, Prolog — and try the assignment. That's it. Come back tomorrow and the streak counter does the rest.
