Notes from the foundry

Make the next decision a little clearer.

Practical guides to the problems we’re building around. Real development previews, worked examples, and something you can use today.

Blueprint Chess

How to turn a chess game review into useful practice

Work through a real Blueprint Chess review: check a capture, name the decision you missed, and turn it into a repeatable practice question.

Horizon Fitness

See how Horizon Fitness turns equipment, session length, and training preferences into an editable starting plan in a real development walkthrough.

Forecheck

Compare two fictional skaters with an adjustable scoring example, then see what to check before using fantasy hockey player rankings.