# Puzzle pieces


## A

902

## B

457

## Id

C08

## Job

remove

## Reason

Keep count-up as connected check.

## Complete source

An imagined puzzle store has 902 pieces and uses 457 once.

## Status

Original fictional ordinary practice; teach source/help before any own application.

## Title

Puzzle pieces

## After own work: adult practice possibility

445 left; 457→500(+43)→900(+400)→902(+2).