Is there a freely available online 7 piece Endgame tablebase?:
The only 7 piece site I heard about is http://tb7.chessok.com/ , and upon registration I am able to setup various positions with 2-6 pieces . However as soon as I setup a position with 7 piece, I get an error about service not being avaiable. Has anyone had better luck or know of any other site with 7 pieces tablebases?
7 piece endgame tablebases solve the mystery of many theoretical endgames, for example Rook endgames with 2 pawns vs. 1, which can be quite tactical if the pawns are on different flanks.