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→Probe
When a chess program (e.g., a chess engine or a chess GUI) works with an EGTB, it needs to retrieve data (integer numbers) for some given chess positions. The process named probe and has below steps:
* convert a given chess position into an index via indexing algorithms
* access data (typically organized organised as an integer arrayarrays of integers) using the index to retrieve the integer of that chess position
If data of that endgame is not ready in memory, usually the probe process has to do some extra work:
* From data index calculate to the block index
* Read data of that block from storage into memory
* Uncompress the block data (if it is compressed)* Convert the endgame index into block index and retrieve the right needed data
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