Finding any square on the board without counting up from a1.
Everything after this is addressed in coordinates. If e4 costs you a moment's arithmetic, that moment is spent on every question in every later unit, and it compounds.
The target is not that you can work a square out. It is that you do not work it out.
The last third shows the position from Black's side. This is where people who have been reading square names off screen position rather than off the coordinate system find out. It is meant to be uncomfortable.
The clock runs but nothing is at stake. Feedback is full at first and thins out, so by the last three you get the answer and nothing else.
Drawn fresh from a held-out pool, so a retake is a new set rather than a memory test. No feedback until the end.
The gate is 18 of 20, each inside its cap. Two misses is not generosity — it is the width of a bad day. A third means the rule has not automated yet, which is a reason to keep drilling and not a verdict about you.
Add anything you got wrong, or got right and did not trust. The button below assembles every added position into one block of text and copies it. Paste it into the tutor project and argue about it.
You already have the answer; it is in the packet. The question worth asking is which rule you applied wrongly, and whether the mistake was the rule or the reading. Those need opposite fixes — a misremembered rule gets restated, a misread board gets drilled.