Drill all 89 until you don't have to think about them.
keep both hands on the code
IntelliJ IDEA default keymaps (shared by PyCharm and other IntelliJ-platform IDEs); mac column is the official macOS predefined keymap and win column is the Windows/Linux reference card, so several pairs differ structurally rather than being a clean modifier swap. Excludes OS clipboard, mouse/gesture actions, and numpad folding shortcuts.
Level 1 free · no account · runs in the browser
Every deck is graded 1 to 6: level 1 is the reflex core, the top level is where the specialists live. One move from each, so you can see how far it goes.
Get code-completion suggestions for what you're typing right now
The keystroke you hit before finishing almost any name you type.
…and 3 more at this level
Invoke an IDE action by name without hunting through menus (Find Action)
Runs anything by name for the times you forgot its shortcut.
…and 9 more at this level
Grow the selection outward to the next enclosing syntax scope
Selecting by syntax beats dragging to guess the boundary.
…and 18 more at this level
Find any symbol (method, field, constant) by name across the project (Go to Symbol)
For when you remember the method name but not its home file.
…and 29 more at this level
Jump to the previous error or warning highlighted in the file
The same walk, back up the file.
…and 18 more at this level
Show the method hierarchy for the current member
Shows where a method is overridden up and down the class tree.
…and 6 more at this level
How graduation works. Drill until every move in the deck holds at ≥95% first-try, under 800ms median, across two separate days. Then the deck is done — and you get a certificate stating exactly that, plus a LinkedIn credential in one click.