1. Speed: The speed at which a contestant can core an apple(s) is a crucial factor. The contestant who cores the apple(s) in the shortest amount of time is usually the winner.
2. Accuracy: The accuracy of the coring is also essential. The core should be removed cleanly without damaging the apple's flesh or leaving behind any core remnants.
3. Presentation: The presentation of the cored apple(s) is also taken into consideration. The apple should be cored in a visually appealing manner, with a symmetrical shape and no ragged edges.
4. Technique: The technique used to core the apple(s) is also evaluated. The contestant should use proper technique to ensure accuracy and speed.
5. Safety: Safety precautions should be taken during the coring process, such as using a sharp knife and avoiding any unnecessary risks.
6. Number of Apples: Depending on the contest rules, contestants may be required to core a specific number of apples within the allotted time.
7. Equipment: The type of equipment used for coring, such as the size and sharpness of the knife or corer, may be specified in the contest rules.
8. Overall Impression: The overall impression of the contestant's performance, including their speed, accuracy, presentation, technique, and sportsmanship, may be taken into account when determining the winner.
Please note that the criteria for a coring contest may vary based on the specific rules and regulations set by the contest organizer.