Four tracks. One philosophy.
Every sheet is ordered, not sorted. Pick the one that matches where you are — you can move between them whenever you like.
Complete DSA
Foundation track
Every core topic from arrays to graphs, sequenced so each problem earns the next. Start here if you want the whole picture.
Open the sheetSDE Sheet
Interview track
Tight, high-signal, built for the weeks before a loop. Same patterns, less room to wander.
Open the sheetBlind 75
The classic shortlist
The list everyone starts from, with our ordering and explanations layered on top.
In the forgeHandpicked 100
Our own pick
A hundred problems we keep returning to, chosen for what each one teaches rather than how often it is asked.
In the forge