Cambridge B2 & C1 exam preparation. Built by an examiner. Not a textbook.
Play Today's PuzzleKey word transformations. One sentence, one keyword, one chance to prove your grammar range. The core skill tested in Cambridge Use of English.
Connections grid. Sixteen words, four hidden categories. Spot the patterns — collocations, phrasal verbs, register, and more.
The distractors aren't random. Each one targets a specific mistake pattern that Spanish-speaking learners make. When you pick the wrong word, you learn why it was wrong.
Every item is reverse-engineered from patterns seen in actual Cambridge exams. The grammar focus, the difficulty calibration, the word banks — all mapped to what examiners actually test.
B2 tests one grammatical rule. C1 tests grammar plus idiomatic knowledge. The difficulty isn't random — it's calibrated to the specific cognitive demands of each level.
I hold the Cambridge Delta — the highest teaching qualification in ELT — and I've spent over a decade preparing students for B2, C1, and C2 exams. Every item on this platform meets the same standard as a live exam paper. Not because I aim for it, but because I've spent years marking against the same criteria the examiners use.
I'm based in Spain, and I've watched the same errors repeat across thousands of students. Spanish-speaking learners don't fail Cambridge exams because they lack vocabulary. They fail because nobody showed them where their first language is actively sabotaging their English. Every transformation, every distractor, every word bank is reverse-engineered from real student mistakes. The materials I needed didn't exist, so I built them.
If you're a teacher, you'll recognise the patterns immediately. If you're a student, you're about to find out exactly why you keep falling into the same traps — and how to stop.
Themed grammar packs. 15–20 transformations + connections grids per set. Built for classroom use or self-study.
New puzzles drop daily. Packs, features, and tools are in the pipeline. Leave your email and we'll keep you posted.