🗺️ Quests

Story cases you crack like a detective. One case scores six thinking moves at once — framing, digging, estimating, dodging mind-traps, deciding.

Your case

The Missing Marks

Eighty-five to sixty-two in one term, and the phone is already in evidence.

A case you haven't cracked yet.

Take the case →

About five minutes. 0 of 6 cases cracked so far.

Solver RecordsHow each of your thinking moves is holding upOpen →

Combined Training

One situation, three moments, and each one needs a different move — with nothing to tell you which. At the end you get every moment replayed with what you would have decided without the move that saved it.

🧾 The QuoteYour landlord wants to spend ₹4 lakh doing up the kitchen, and he wants you to put in a share of it. He has already had one quote and he is keen to tell you about it. · ~4 minStart →📉 The DropYou run a small tuition centre. You have 96 students on the roll this month, down from 119 last month, and your partner is already sure he knows why. · ~4 minStart →✉️ The OfferA recruiter messages you about a role at a company you have heard of. You are not looking, but you are curious. · ~4 minStart →

Concept practice

Practise one thinking move before taking on a case. The two guided exercises below each offer three optional practice sessions.

Sort the whole picture →Give every item one clear home. Three guided examples.Build a clear recommendation →Connect facts to reasons. Three guided examples.

🧲 Anchor Alarmescape planted numbers→🪜 Fermi Ladderestimate the impossible→📡 Base-Rate Radarboring numbers beat stories→🪤 Trap Sprintoutrun your first answer→🏛 Syllogism Streetlogic vs what feels true→🃏 Card Flip Testtest rules where they break→🪞 Frame Flipsee through dressed-up numbers→⚓ Sunk Shipdecide on the future, not the receipt→🕵️ Rule Huntertest to break, not confirm→🎯 Interval Aceconfidence you can defend→🛁 Bathtub Logiclevels vs flows→⛏ Why Chaindig past the first because→🪦 Premortem Builderkill the plan on paper first→⚖️ 80/20 Triagefind the few that carry the many→🁢 Second-Order Dominoand THEN what happens?→🙃 Flip Itsolve backwards→🫥 Hidden Givenshunt the assumption→📦 Box Breakerhalf your constraints are invented→🌉 Bridge Finderborrow from lookalike problems→🧮 Trade-Off Tablehonest decision arithmetic→🔍 Grid Detectivesqueeze certainty from clues→

Choose any practice that helps with your next case.

Cognitive entertainment and skills practice — game scores, not a diagnosis.