This position cannot be reached by standard chess from initial position:
id align-ep
epd 8/8/8/1k6/3Pp3/8/8/4KQ2 b - d3
perft 1 6
perft 2 121
perft 3 711
When dartchess supports optional validity requirements, it should be able to validate that perft.
This position cannot be reached by standard chess from initial position:
When dartchess supports optional validity requirements, it should be able to validate that perft.