Tablebase Hits from 32 piece positions

Endgame analysis using tablebases, EGTB generation, exchange, sharing, discussions, etc..

Tablebase Hits from 32 piece positions

Postby pa1ny » Wed Sep 07, 2016 3:43 pm

I wonder if (and when) Stockfish 7 hits Syzygy tablebases in positions with full 32 pieces still onboard.

So I picked a random opening where no piece is captured till move 12 and was quite surprised that I got the first tablebase hits within 23 minutes! And I only used a rather old notebook (5 years) for this.

This was the position: r2r2k1/ppq1npbp/2ppbnp1/4p3/P2PP3/2N1BN1P/1PPQBPP1/3RR1K1 w - - 4 13

01 TB-Hits Full Board 23min.jpg
01 TB-Hits Full Board 23min.jpg (268.15 KiB) Viewed 408 times


Then, after 3 hours of analysing, I even got hundreds of hits as you can see here:

02 Syzygy TB-Hits Full Board.jpg
02 Syzygy TB-Hits Full Board.jpg (274.7 KiB) Viewed 407 times


I've logged the files Stockfish was hitting with Filemon as well (D:\Rybka4\ is just a directory, nevermind that). See attached.


This brought me to the subject of thinking about how it would be from the initial start position.

12 hours later, I really got an 1 single TB-Hit on KPPvKPP:

03 One TB-Hit Initial Position!.jpg
03 One TB-Hit Initial Position!.jpg (235.55 KiB) Viewed 405 times


That was an interesting and unexpected discovery. I'd never thought to get tablebase hits so early on!

It could be useful to track further endgame files Stockfish hits from the initial start position and compare this to the frequency lists and which endgames are useful to download primarily - shown here for example: http://kirill-kryukov.com/chess/discussion-board/viewtopic.php?t=74


Any help analysing those hits with high-end systems will be greatly appreciated. Which one is next after KPPvKPP ?


Cheers, pa1ny
pa1ny
 
Posts: 8
Joined: Tue Sep 06, 2016 3:36 pm

Re: Tablebase Hits from 32 piece positions

Postby pa1ny » Fri Sep 16, 2016 3:01 pm

Additional Info:

If someone is wondering how my first 32-piece Position was created:

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. d4 d6 5. Be3 g6 6. Be2 Bg7 7. O-O O-O 8.
h3 Ne7 9. Qd2 c6 10. Rad1 Be6 11. a4 Qc7 12. Rfe1 Rfd8

Call it a Four Knights, Scotch or Modern opening line with a little Caro-Kann in the end .. whatever, the main point is: No piece gets captured and there's no clear advantage for any side.

r2r2k1/ppq1npbp/2ppbnp1/4p3/P2PP3/2N1BN1P/1PPQBPP1/3RR1K1 w - -
r2r2k1/ppq1npbp/2ppbnp1/4p3/P2PP3/2N1BN1P/1PPQBPP1/3RR1K1 w - -

Do diagrams work in this Forum?

By the way, here are some procmon/filemon outputs from analysing this position for about 30 minutes:

"Time of Day","Process Name","PID","Operation","Path","Result","Detail"
"13:58:37,1791252","Explorer.EXE","3548","CreateFile","C:\Tablebases\Syzygy\folder.jpg","NAME NOT FOUND","Desired Access: Read Attributes, Disposition: Open, Options: Open Reparse Point, Attributes: n/a, ShareMode: Read, Write, Delete, AllocationSize: n/a"
"13:58:37,1793103","Explorer.EXE","3548","CreateFile","C:\Tablebases\Syzygy\folder.gif","NAME NOT FOUND","Desired Access: Read Attributes, Disposition: Open, Options: Open Reparse Point, Attributes: n/a, ShareMode: Read, Write, Delete, AllocationSize: n/a"
"14:13:56,9071645","stockfish 7 x64.exe","7624","CreateFile","C:\Tablebases\Syzygy\KPPvKPP.rtbw","SUCCESS","Desired Access: Generic Read, Disposition: Open, Options: Synchronous IO Non-Alert, Non-Directory File, Attributes: N, ShareMode: Read, AllocationSize: n/a, OpenResult: Opened"
"14:13:56,9072514","stockfish 7 x64.exe","7624","QueryStandardInformationFile","C:\Tablebases\Syzygy\KPPvKPP.rtbw","SUCCESS","AllocationSize: 114.905.088, EndOfFile: 114.901.200, NumberOfLinks: 1, DeletePending: False, Directory: False"
"14:13:56,9072987","stockfish 7 x64.exe","7624","QueryStandardInformationFile","C:\Tablebases\Syzygy\KPPvKPP.rtbw","SUCCESS","AllocationSize: 114.905.088, EndOfFile: 114.901.200, NumberOfLinks: 1, DeletePending: False, Directory: False"
"14:13:56,9073335","stockfish 7 x64.exe","7624","CreateFileMapping","C:\Tablebases\Syzygy\KPPvKPP.rtbw","SUCCESS","SyncType: SyncTypeOther"
"14:13:56,9077627","stockfish 7 x64.exe","7624","CloseFile","C:\Tablebases\Syzygy\KPPvKPP.rtbw","SUCCESS",""
"14:13:56,9081586","stockfish 7 x64.exe","7624","ReadFile","C:\Tablebases\Syzygy\KPPvKPP.rtbw","SUCCESS","Offset: 253.952, Length: 32.768, I/O Flags: Non-cached, Paging I/O, Synchronous Paging I/O, Priority: Normal"
"14:13:56,9330811","stockfish 7 x64.exe","7624","ReadFile","C:\Tablebases\Syzygy\KPPvKPP.rtbw","SUCCESS","Offset: 2.301.952, Length: 32.768, I/O Flags: Non-cached, Paging I/O, Synchronous Paging I/O, Priority: Normal"
"14:13:56,9362406","stockfish 7 x64.exe","7624","ReadFile","C:\Tablebases\Syzygy\KPPvKPP.rtbw","SUCCESS","Offset: 63.717.376, Length: 32.768, I/O Flags: Non-cached, Paging I/O, Synchronous Paging I/O, Priority: Normal"
"14:13:56,9465701","stockfish 7 x64.exe","7624","ReadFile","C:\Tablebases\Syzygy\KPPvKPP.rtbw","SUCCESS","Offset: 63.758.336, Length: 32.768, I/O Flags: Non-cached, Paging I/O, Synchronous Paging I/O, Priority: Normal"
"14:13:56,9472588","stockfish 7 x64.exe","7624","CreateFile","C:\Tablebases\Syzygy\KPPvKP.rtbw","SUCCESS","Desired Access: Generic Read, Disposition: Open, Options: Synchronous IO Non-Alert, Non-Directory File, Attributes: N, ShareMode: Read, AllocationSize: n/a, OpenResult: Opened"
"14:13:56,9473413","stockfish 7 x64.exe","7624","QueryStandardInformationFile","C:\Tablebases\Syzygy\KPPvKP.rtbw","SUCCESS","AllocationSize: 7.499.776, EndOfFile: 7.499.088, NumberOfLinks: 1, DeletePending: False, Directory: False"
"14:13:56,9474091","stockfish 7 x64.exe","7624","QueryStandardInformationFile","C:\Tablebases\Syzygy\KPPvKP.rtbw","SUCCESS","AllocationSize: 7.499.776, EndOfFile: 7.499.088, NumberOfLinks: 1, DeletePending: False, Directory: False"
"14:13:56,9474457","stockfish 7 x64.exe","7624","CreateFileMapping","C:\Tablebases\Syzygy\KPPvKP.rtbw","SUCCESS","SyncType: SyncTypeOther"
"14:13:56,9474890","stockfish 7 x64.exe","7624","CloseFile","C:\Tablebases\Syzygy\KPPvKP.rtbw","SUCCESS",""
"14:13:56,9482389","stockfish 7 x64.exe","7624","ReadFile","C:\Tablebases\Syzygy\KPPvKP.rtbw","SUCCESS","Offset: 262.144, Length: 32.768, I/O Flags: Non-cached, Paging I/O, Synchronous Paging I/O, Priority: Normal"
"14:13:56,9707195","stockfish 7 x64.exe","7624","ReadFile","C:\Tablebases\Syzygy\KPPvKP.rtbw","SUCCESS","Offset: 4.632.576, Length: 32.768, I/O Flags: Non-cached, Paging I/O, Synchronous Paging I/O, Priority: Normal"
"14:13:56,9750315","stockfish 7 x64.exe","7624","ReadFile","C:\Tablebases\Syzygy\KPPPvKP.rtbw","SUCCESS","Offset: 237.568, Length: 32.768, I/O Flags: Non-cached, Paging I/O, Synchronous Paging I/O, Priority: Normal"
"14:13:56,9924153","stockfish 7 x64.exe","7624","ReadFile","C:\Tablebases\Syzygy\KPPPvKP.rtbw","SUCCESS","Offset: 1.503.232, Length: 32.768, I/O Flags: Non-cached, Paging I/O, Synchronous Paging I/O, Priority: Normal"
"14:13:57,0023492","stockfish 7 x64.exe","7624","ReadFile","C:\Tablebases\Syzygy\KPPPvKP.rtbw","SUCCESS","Offset: 40.873.984, Length: 32.768, I/O Flags: Non-cached, Paging I/O, Synchronous Paging I/O, Priority: Normal"
... ... ...
"14:00:06,7022773","stockfish 7 x64.exe","7624","ReadFile","C:\Tablebases\Syzygy\KRPPvKP.rtbw","SUCCESS","Offset: 1.245.184, Length: 32.768, I/O Flags: Non-cached, Paging I/O, Synchronous Paging I/O, Priority: Normal"
"14:00:06,7420182","stockfish 7 x64.exe","7624","ReadFile","C:\Tablebases\Syzygy\KRPPvKP.rtbw","SUCCESS","Offset: 25.030.656, Length: 32.768, I/O Flags: Non-cached, Paging I/O, Synchronous Paging I/O, Priority: Normal"
"14:00:06,7812272","stockfish 7 x64.exe","7624","CreateFile","C:\Tablebases\Syzygy\KRPvKPP.rtbw","SUCCESS","Desired Access: Generic Read, Disposition: Open, Options: Synchronous IO Non-Alert, Non-Directory File, Attributes: N, ShareMode: Read, AllocationSize: n/a, OpenResult: Opened"
"14:00:06,7813002","stockfish 7 x64.exe","7624","QueryStandardInformationFile","C:\Tablebases\Syzygy\KRPvKPP.rtbw","SUCCESS","AllocationSize: 249.114.624, EndOfFile: 249.114.448, NumberOfLinks: 1, DeletePending: False, Directory: False"
"14:00:06,7813412","stockfish 7 x64.exe","7624","QueryStandardInformationFile","C:\Tablebases\Syzygy\KRPvKPP.rtbw","SUCCESS","AllocationSize: 249.114.624, EndOfFile: 249.114.448, NumberOfLinks: 1, DeletePending: False, Directory: False"
"14:00:06,7813870","stockfish 7 x64.exe","7624","CreateFileMapping","C:\Tablebases\Syzygy\KRPvKPP.rtbw","SUCCESS","SyncType: SyncTypeOther"
"14:00:06,7814281","stockfish 7 x64.exe","7624","CloseFile","C:\Tablebases\Syzygy\KRPvKPP.rtbw","SUCCESS",""
"14:00:06,7820765","stockfish 7 x64.exe","7624","ReadFile","C:\Tablebases\Syzygy\KRPvKPP.rtbw","SUCCESS","Offset: 176.128, Length: 32.768, I/O Flags: Non-cached, Paging I/O, Synchronous Paging I/O, Priority: Normal"
"14:00:06,7949937","stockfish 7 x64.exe","7624","ReadFile","C:\Tablebases\Syzygy\KRPvKPP.rtbw","SUCCESS","Offset: 1.601.536, Length: 32.768, I/O Flags: Non-cached, Paging I/O, Synchronous Paging I/O, Priority: Normal"
"14:00:06,7984392","stockfish 7 x64.exe","7624","ReadFile","C:\Tablebases\Syzygy\KRPvKPP.rtbw","SUCCESS","Offset: 31.965.184, Length: 32.768, I/O Flags: Non-cached, Paging I/O, Synchronous Paging I/O, Priority: Normal"
"14:00:06,8142931","stockfish 7 x64.exe","7624","CreateFile","C:\Tablebases\Syzygy\KQPPvKQ.rtbw","SUCCESS","Desired Access: Generic Read, Disposition: Open, Options: Synchronous IO Non-Alert, Non-Directory File, Attributes: N, ShareMode: Read, AllocationSize: n/a, OpenResult: Opened"
"14:00:06,8145288","stockfish 7 x64.exe","7624","QueryStandardInformationFile","C:\Tablebases\Syzygy\KQPPvKQ.rtbw","SUCCESS","AllocationSize: 444.370.944, EndOfFile: 444.370.000, NumberOfLinks: 1, DeletePending: False, Directory: False"
"14:00:06,8145757","stockfish 7 x64.exe","7624","QueryStandardInformationFile","C:\Tablebases\Syzygy\KQPPvKQ.rtbw","SUCCESS","AllocationSize: 444.370.944, EndOfFile: 444.370.000, NumberOfLinks: 1, DeletePending: False, Directory: False"
"14:00:06,8146116","stockfish 7 x64.exe","7624","CreateFileMapping","C:\Tablebases\Syzygy\KQPPvKQ.rtbw","SUCCESS","SyncType: SyncTypeOther"
"14:00:06,8146592","stockfish 7 x64.exe","7624","CloseFile","C:\Tablebases\Syzygy\KQPPvKQ.rtbw","SUCCESS",""
"14:00:06,8152615","stockfish 7 x64.exe","7624","ReadFile","C:\Tablebases\Syzygy\KQPPvKQ.rtbw","SUCCESS","Offset: 1.331.200, Length: 32.768, I/O Flags: Non-cached, Paging I/O, Synchronous Paging I/O, Priority: Normal"
"14:00:06,8294733","stockfish 7 x64.exe","7624","ReadFile","C:\Tablebases\Syzygy\KQPPvKQ.rtbw","SUCCESS","Offset: 10.596.352, Length: 32.768, I/O Flags: Non-cached, Paging I/O, Synchronous Paging I/O, Priority: Normal"
"14:00:06,8363078","stockfish 7 x64.exe","7624","ReadFile","C:\Tablebases\Syzygy\KQPPvKQ.rtbw","SUCCESS","Offset: 283.844.608, Length: 32.768, I/O Flags: Non-cached, Paging I/O, Synchronous Paging I/O, Priority: Normal"
"14:00:06,8464257","stockfish 7 x64.exe","7624","CreateFile","C:\Tablebases\Syzygy\KRPvK.rtbw","SUCCESS","Desired Access: Generic Read, Disposition: Open, Options: Synchronous IO Non-Alert, Non-Directory File, Attributes: N, ShareMode: Read, AllocationSize: n/a, OpenResult: Opened"
"14:00:06,8465159","stockfish 7 x64.exe","7624","QueryStandardInformationFile","C:\Tablebases\Syzygy\KRPvK.rtbw","SUCCESS","AllocationSize: 8.192, EndOfFile: 5.136, NumberOfLinks: 1, DeletePending: False, Directory: False"
"14:00:06,8465613","stockfish 7 x64.exe","7624","QueryStandardInformationFile","C:\Tablebases\Syzygy\KRPvK.rtbw","SUCCESS","AllocationSize: 8.192, EndOfFile: 5.136, NumberOfLinks: 1, DeletePending: False, Directory: False"
"14:00:06,8465980","stockfish 7 x64.exe","7624","CreateFileMapping","C:\Tablebases\Syzygy\KRPvK.rtbw","SUCCESS","SyncType: SyncTypeOther"
"14:00:06,8466401","stockfish 7 x64.exe","7624","CloseFile","C:\Tablebases\Syzygy\KRPvK.rtbw","SUCCESS",""
"14:00:06,8467967","stockfish 7 x64.exe","7624","CreateFile","C:\Tablebases\Syzygy\KRPPvKR.rtbw","SUCCESS","Desired Access: Generic Read, Disposition: Open, Options: Synchronous IO Non-Alert, Non-Directory File, Attributes: N, ShareMode: Read, AllocationSize: n/a, OpenResult: Opened"
"14:00:06,8468494","stockfish 7 x64.exe","7624","QueryStandardInformationFile","C:\Tablebases\Syzygy\KRPPvKR.rtbw","SUCCESS","AllocationSize: 247.898.112, EndOfFile: 247.897.168, NumberOfLinks: 1, DeletePending: False, Directory: False"
"14:00:06,8468817","stockfish 7 x64.exe","7624","QueryStandardInformationFile","C:\Tablebases\Syzygy\KRPPvKR.rtbw","SUCCESS","AllocationSize: 247.898.112, EndOfFile: 247.897.168, NumberOfLinks: 1, DeletePending: False, Directory: False"
"14:00:06,8469118","stockfish 7 x64.exe","7624","CreateFileMapping","C:\Tablebases\Syzygy\KRPPvKR.rtbw","SUCCESS","SyncType: SyncTypeOther"
"14:00:06,8469477","stockfish 7 x64.exe","7624","CloseFile","C:\Tablebases\Syzygy\KRPPvKR.rtbw","SUCCESS",""
"14:00:06,8475942","stockfish 7 x64.exe","7624","ReadFile","C:\Tablebases\Syzygy\KRPPvKR.rtbw","SUCCESS","Offset: 405.504, Length: 32.768, I/O Flags: Non-cached, Paging I/O, Synchronous Paging I/O, Priority: Normal"
"14:00:06,8653773","stockfish 7 x64.exe","7624","ReadFile","C:\Tablebases\Syzygy\KRPPvKR.rtbw","SUCCESS","Offset: 3.821.568, Length: 32.768, I/O Flags: Non-cached, Paging I/O, Synchronous Paging I/O, Priority: Normal"
... ... ...
"14:00:06,9727538","stockfish 7 x64.exe","7624","ReadFile","C:\Tablebases\Syzygy\KQPPvKQ.rtbw","SUCCESS","Offset: 283.934.720, Length: 32.768, I/O Flags: Non-cached, Paging I/O, Synchronous Paging I/O, Priority: Normal"
"14:00:07,0115695","stockfish 7 x64.exe","7624","ReadFile","C:\Tablebases\Syzygy\KQPPvKQ.rtbw","SUCCESS","Offset: 283.901.952, Length: 32.768, I/O Flags: Non-cached, Paging I/O, Synchronous Paging I/O, Priority: Normal"
"14:00:07,1250530","stockfish 7 x64.exe","7624","CreateFile","C:\Tablebases\Syzygy\KQPvKQP.rtbw","SUCCESS","Desired Access: Generic Read, Disposition: Open, Options: Synchronous IO Non-Alert, Non-Directory File, Attributes: N, ShareMode: Read, AllocationSize: n/a, OpenResult: Opened"
"14:00:07,1251406","stockfish 7 x64.exe","7624","QueryStandardInformationFile","C:\Tablebases\Syzygy\KQPvKQP.rtbw","SUCCESS","AllocationSize: 517.140.480, EndOfFile: 517.138.768, NumberOfLinks: 1, DeletePending: False, Directory: False"
"14:00:07,1251849","stockfish 7 x64.exe","7624","QueryStandardInformationFile","C:\Tablebases\Syzygy\KQPvKQP.rtbw","SUCCESS","AllocationSize: 517.140.480, EndOfFile: 517.138.768, NumberOfLinks: 1, DeletePending: False, Directory: False"
"14:00:07,1252208","stockfish 7 x64.exe","7624","CreateFileMapping","C:\Tablebases\Syzygy\KQPvKQP.rtbw","SUCCESS","SyncType: SyncTypeOther"
"14:00:07,1252678","stockfish 7 x64.exe","7624","CloseFile","C:\Tablebases\Syzygy\KQPvKQP.rtbw","SUCCESS",""
"14:00:07,1256207","stockfish 7 x64.exe","7624","ReadFile","C:\Tablebases\Syzygy\KQPvKQP.rtbw","SUCCESS","Offset: 888.832, Length: 32.768, I/O Flags: Non-cached, Paging I/O, Synchronous Paging I/O, Priority: Normal"
"14:00:07,1641304","stockfish 7 x64.exe","7624","ReadFile","C:\Tablebases\Syzygy\KQPvKQP.rtbw","SUCCESS","Offset: 7.450.624, Length: 32.768, I/O Flags: Non-cached, Paging I/O, Synchronous Paging I/O, Priority: Normal"
"14:00:07,1965123","stockfish 7 x64.exe","7624","ReadFile","C:\Tablebases\Syzygy\KQPvKQP.rtbw","SUCCESS","Offset: 166.830.080, Length: 32.768, I/O Flags: Non-cached, Paging I/O, Synchronous Paging I/O, Priority: Normal"
"14:08:55,6679494","stockfish 7 x64.exe","7624","CreateFile","C:\Tablebases\Syzygy\KRPvKRP.rtbw","SUCCESS","Desired Access: Generic Read, Disposition: Open, Options: Synchronous IO Non-Alert, Non-Directory File, Attributes: N, ShareMode: Read, AllocationSize: n/a, OpenResult: Opened"
"14:08:55,6680377","stockfish 7 x64.exe","7624","QueryStandardInformationFile","C:\Tablebases\Syzygy\KRPvKRP.rtbw","SUCCESS","AllocationSize: 516.284.416, EndOfFile: 516.280.976, NumberOfLinks: 1, DeletePending: False, Directory: False"
"14:08:55,6680869","stockfish 7 x64.exe","7624","QueryStandardInformationFile","C:\Tablebases\Syzygy\KRPvKRP.rtbw","SUCCESS","AllocationSize: 516.284.416, EndOfFile: 516.280.976, NumberOfLinks: 1, DeletePending: False, Directory: False"
"14:08:55,6681242","stockfish 7 x64.exe","7624","CreateFileMapping","C:\Tablebases\Syzygy\KRPvKRP.rtbw","SUCCESS","SyncType: SyncTypeOther"
"14:08:55,6681851","stockfish 7 x64.exe","7624","CloseFile","C:\Tablebases\Syzygy\KRPvKRP.rtbw","SUCCESS",""
"14:08:55,6685678","stockfish 7 x64.exe","7624","ReadFile","C:\Tablebases\Syzygy\KRPvKRP.rtbw","SUCCESS","Offset: 192.512, Length: 32.768, I/O Flags: Non-cached, Paging I/O, Synchronous Paging I/O, Priority: Normal"
"14:08:55,7027556","stockfish 7 x64.exe","7624","ReadFile","C:\Tablebases\Syzygy\KRPvKRP.rtbw","SUCCESS","Offset: 3.502.080, Length: 32.768, I/O Flags: Non-cached, Paging I/O, Synchronous Paging I/O, Priority: Normal"

... and so on.

We have the quite expected KPPvKPP, KPPPvKP, KRPPvKP, KRPPvKR, KRPvKRP, KQPPvKP, KQPPvKQ, KQPvKQP, etc.
but also some interesting KPPPvKR and KBPvKNP!
pa1ny
 
Posts: 8
Joined: Tue Sep 06, 2016 3:36 pm

Re: Tablebase Hits from 32 piece positions

Postby pa1ny » Wed Oct 12, 2016 4:14 pm

Ok, there's obviously nobody with an high-end machine willing to support this, so I've done some research myself lately..

354 TB-Hits Initial Position! 180h Depth46.jpg
354 TB-Hits Initial Position! 180h Depth46.jpg (170.06 KiB) Viewed 338 times


I ran Stockfish-7 with Syzygy bases for over 180(!) hours from root position and got some reasonable results:

It was showing 354 TB-Hits in sum. I would rank the top 20 as follows:

01. KPPvKPP
02. KRPvKPP
03. KRPPvKP
04. KRPPvKR
05. KRPvKRP
06. KPPPvKP
07. KQPPvKP
08. KQPvKPP
09. KQPvKQP
10. KQPPvKQ
11. KQRvKRP
12. KPPPvKR
13. KBPvKPP
14. KRPvKBP
15. KNPvKNP
16. KBPvKNP
17. KQPvKRR
18. KNPPvKP
19. KPPPvKN
20. KNPvKPP

A few more rare exotics were KRRvKRP, KNPPvKR, KRBvKRN, KRBvKBN and KBNvKBN also.

It's noteworthy that tablebases lower than 6-men were also queried! I got several hits on KRPvKP, KPPvKQ, KRvKP and even hits at 3-men KRvK and KPvK.

This is quite fascinating because remember .. I did this from the initial chess root position, that means 32 pieces on their home squares, pawns still blocking all of them except the knights!


Another interesting side affect of this experiment are the favorite opening lines, that Stockfish-7 suggest after almost 8 days:

1) +0,19 = C03 French Defence, Tarrasch Variation:
e2-e4 e7-e6 d2-d4 d7-d5 Nb1-d2 Bf8-e7 c2-c3 c7-c5 e4xd5 e6xd5 d4xc5 Be7xc5 Nd2-b3 Bc5-b6 a2-a4 Nb8-c6 a4-a5 Bb6-c7 a5-a6 Ng8-f6 Bf1-b5 0-0 Ng1-e2 Nc6-e5 a6xb7 Bc8xb7 Nb3-d4 Nf6-e4 0-0 a7-a6 Bb5-a4 Ne4-c5 Ba4-c2 g7-g6 h2-h3 Rf8-e8 b2-b4 Nc5-d7 Bc1-f4 Bc7-b6 Bc2-a4 Ne5-c4 Nd4-c6 Qd8-f6 Nc6-a5 Bb6xa5 Ba4xd7 Re8-e7 b4xa5 Re7xd7 Bf4-g3 Qf6-d8 Qd1-d4 Nc4xa5 Qd4-a4 Na5-c6 Ne2-d4 Nc6xd4

2) +0,14 = E53 Nimzo-Indian Defence, Main Line:
d2-d4 Ng8-f6 c2-c4 e7-e6 Nb1-c3 Bf8-b4 e2-e3 0-0 Bf1-d3 b7-b6 Ng1-f3 d7-d5 0-0 c7-c5 d4xc5 d5xc4 Bd3xc4 Qd8xd1 Rf1xd1 Bb4xc5 b2-b3 Bc8-b7 Bc1-b2 Nb8-c6 Bc4-e2 Rf8-d8 Ra1-c1 Ra8-c8 Rd1xd8+ Rc8xd8 a2-a3 Bc5-d6 Rc1-d1 Bd6-e7 Rd1xd8+ Nc6xd8 Nf3-e5 Nd8-c6 Ne5-c4 Nc6-a5 Nc4-d2 Na5-c6 Be2-f3 Nf6-d7 Nc3-b5 Nd7-c5 Bf3xc6 Bb7xc6 Nb5xa7 Bc6-b7

3) +0,11 = A00 Van Kruij's Opening, Indian:
e2-e3 e7-e6 Ng1-f3 Ng8-f6 d2-d4 Bf8-e7 Bf1-d3 d7-d5 0-0 0-0 Nb1-d2 c7-c5 b2-b3 Nb8-c6 Bc1-b2 c5xd4 e3xd4 b7-b6 Rf1-e1 Nc6-b4 Bd3-f1 Nb4-c6 c2-c3 Qd8-c7 Ra1-c1 Bc8-b7 a2-a3 Rf8-c8 Bf1-d3 a7-a5 a3-a4 h7-h6 Qd1-e2 Rc8-f8 h2-h3 Ra8-c8 Nd2-f1 Rc8-b8 Nf1-e3 Be7-d6 Rc1-d1 Rf8-c8 g2-g3 Nc6-e7 Bd3-b5

4) +0,09 = A46 Reti, Indian Defence:
Ng1-f3 Ng8-f6 d2-d4 e7-e6 e2-e3 Bf8-e7 Bf1-d3 d7-d5 0-0 0-0 Nb1-d2 c7-c5 b2-b3 Nb8-c6 Bc1-b2 c5xd4 e3xd4 b7-b6 Rf1-e1 Nc6-b4 Bd3-e2 Bc8-b7 c2-c3 Nb4-c6 Be2-d3 Qd8-c7 Qd1-e2 Nf6-h5 g2-g3 a7-a5 Nf3-e5 Nh5-f6 Ne5xc6 Bb7xc6 a2-a4 Ra8-c8 Nd2-f3 Bc6-b7 Ra1-c1 Be7-d6 Bd3-b5 Nf6-e4 c3-c4 d5xc4 b3xc4 Bd6-b4

White's move Nb1-d2 seems to be quite popular in most of them. Black always goes e5-e6 on the first two moves .. whatever that means :)

Of course my Laptop only hits bases that exists and I don't have all the Syzygy 6-men tables installed, only a careful selection up to 50GB in space. And it's only an AMD 2,1Ghz 64bit dual core I was using, so any help is still greatly appreciated.
pa1ny
 
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Joined: Tue Sep 06, 2016 3:36 pm


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