7-men Syzygy Subset Recommendations

[jshriver]

When 6men came out several people here recommend a nice selection of recommended files that don't have dependencies (other than 3-4-5).

Since I'm not able to store the entire 7-men set yet, are there any you recommend that only need the 3-6 as it's dependency? I realize these will be pawnless.

Thanks for your time,
-Josh

[Jouni]

Komodo Dragon manual displays these as the most common 7-men:

Code: Select all

1      KRPPKRP 153,091 
2      KPPPKPP 63,395  

3      KBPPKBP 24,923  
4      KNPPKNP 20,204  
5      KRPPPKR 20,144  
6      KNPPKBP 19,617  
7      KBPPKNP 17,783  
8      KBPPKPP 15,470  
9      KNPPKPP 13,554  
10     KRPPKPP 13,052  
11     KQPPKQP 12,302  
12     KBPPKRP 12,082 
 

All have pawns.

[jshriver]

Komodo Dragon manual displays these as the most common 7-men:

All have pawns.

Thanks for the reply. Is it safe to use pawn tables without all of the related files due to possible conversion? Guess it's a silly question and would very rarely show up in game. But from a practical perspective of someone using these for game analysis would it be relatively safe? Just wondering what stockfish would do in a rare chance a pawn was promoted while all 7 pieces are still at play. Would it then revert to 6 men? Food for thought.

I grabbed the WDL+DTZ for KRPPvKRP last night will do some testing and check it's behavior.

[syzygy]

Komodo Dragon manual displays these as the most common 7-men:

All have pawns.

Thanks for the reply. Is it safe to use pawn tables without all of the related files due to possible conversion? Guess it's a silly question and would very rarely show up in game. But from a practical perspective of someone using these for game analysis would it be relatively safe? Just wondering what stockfish would do in a rare chance a pawn was promoted while all 7 pieces are still at play. Would it then revert to 6 men? Food for thought.

I grabbed the WDL+DTZ for KRPPvKRP last night will do some testing and check it's behavior.

The probe of a position that has a direct promotion move might fail. Stockfish will then search the position normally.