423,836,835,667,331 positions of 7 men or less, but many of these are illegal or irrelevant like with 3 light square bishops.
There is also work in progress on 8 men table bases, where many positions are already solved, but not all 38,176,306,877,748,245.
Number of solved chess positions?
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I know 7 piece tablebases, but how many positions does that account to?