The Lomonosov Endgame Tablebase support 7 pieces. It means it has all the positions your describe in your question otherwise it's not a tablebase by definition.

The "ridiculous" positions you mention might not happen on the board but might still happen in the engine search. They're still important because pawns can promote, and chess engine looks at lots of possibilities - not just positions actually appear on the board.

All 7-or-less endgames have been analyzed, however, some tablebase implementation leave out bare king endgames.

The Lomonosov Endgame Tablebase supports 7 pieces. That means it has all the positions you describe in your question. Otherwise, it's not a tablebase by definition.

The "ridiculous" positions you mention might not happen on the board but might still happen in the engine search. They're still important because pawns can promote, and a chess engine looks at lots of possibilities -- not just positions that actually appear on the board.

All 7-or-less endgames have been analyzed. However, some tablebase implementations leave out bare king endgames.

The Lomonosov Endgame Tablebase support 7 pieces. It means it has all the positions your describe in your question otherwise it's not a tablebase by definition.

PS: KQRvKQQ is 6-men.

The Lomonosov Endgame Tablebase support 7 pieces. It means it has all the positions your describe in your question otherwise it's not a tablebase by definition.

The "ridiculous" positions you mention might not happen on the board but might still happen in the engine search. They're still important because pawns can promote, and chess engine looks at lots of possibilities - not just positions actually appear on the board.

All 7-or-less endgames have been analyzed, however, some tablebase implementation leave out bare king endgames.