Is there a difficult EPD file with test positions

[mclane]

That are difficult even for todays engines ?
E.g. if we want to test LC0 or Stockfish versions by a test suite, we would need a stronger test suite because they search
Very deep and todays computers are very fast.

Please a few difficult New epd Test suites.

[jdart]

I guess you missed this thread:

viewtopic.php?f=2&t=69361

--Jon

[mclane]

thanks. will run it on the engine.
is there a list where the results of several engines can be related to each other in a chart ??

[Paloma]

6 runs with Stockfish: (181222_x64_modern:)
viewtopic.php?p=785509#p785509

But...

I am talking about the fact that these engines have no clue about chess but they are capable to search 40 plies.
As if this is the sense of chess.

I can buy a car that has 30 PS or a car that drives with 300 ps.

Yes the car with 300 ps can drive faster.

But is this the target ??

It’s only a waste of energy.

A dedicated chess computer plays chess with 5 MHz and runs on batteries. It gets 1950 ELO.
Compare this to the amount of energy your pc uses .
It makes no sense .

But why do we need a 30 or 40 depth search to play a game of chess. It sounds to me like using 30 tons of tnt to open a door we could easily open by putting a key into the lock that fits.

Yes we can use 64 CPU cores and compute up to depth 45 . But why ??

What do you want to demonstrate with this ??

That you can waste more energy then others ?

[mclane]

Exactly,
I do have a dedicated chess Computer that runs for years now with 2 AA Cells.

I do normally only play 40/120 games. So over years playing tournament games with 2 AA cells.
Then you can imagine how much energy is wasted by your computers.

The engine I want to test hopefully not wasting so much energy.

[Paloma]

Then you can imagine how much energy is wasted by your computers.

I play no Tournaments (saved much energy )

And this and other Tournaments of yours ?

http://www.talkchess.com/forum3/viewtop ... 01#p679801

Were they running on water or electricity?

Your dedicated comps will not solve to much from these epd.
And Batteries often enough end up in the environment.

Enough of teasing

The 213 positions from the Hard-Talkchess-2020 beta 2 :

Code: Select all

1B1K1k2/4N2p/3pP1pP/6p1/p7/3N2b1/2r2p2/8 w - - bm Nc6;                      
1B1r4/rp2npkp/2b1pbp1/1qp5/nPN1R3/1P1P1QP1/2P2PBP/5R1K w - - bm Qxf6+;      
1N4K1/1pp1p3/7k/2r3pP/p2pp1P1/P6N/8/2B5 w - - bm Nc6;                       
1N6/2pp4/3k1P2/p7/1pK1P3/5P1P/3r2N1/8 w - - bm e5+;                         
1b2k1q1/4ppPp/1pK5/3pP3/3P4/1P6/8/2Q5 w - - bm Qh6;                         
1k1r2r1/pb5n/1qpp2pP/1pb1p3/4P3/1PNP1QN1/1PPB4/2K2R1R w - - bm b4;          
1k6/3p4/1B6/4Pp1p/1p5R/1p4p1/pP3n2/K6n w - - bm Rxh1;                       
1nb3rr/2pp3p/p1k2P2/n1q1PN2/P1pR3N/b4PBp/1R2P3/1KQ5 w - - bm Rd6+;          
1nrrb1k1/1qn1bppp/pp2p3/3pP3/N2P3P/1P1B1NP1/PBR1QPK1/2R5 w - - bm Bxh7+;     
1q1r3k/3P1pp1/ppBR1n1p/4Q2P/P4P2/8/5PK1/8 w - - bm Rxf6;                    
1r1q1rk1/1p2b2p/pN6/P1pP1bp1/5p2/2B2Q2/1P4PP/R4RK1 w - - bm g4;             
1r1rb1k1/5ppp/4p3/1p1p3P/1q2P2Q/pN3P2/PPP4P/1K1R2R1 w - - bm Rxg7+;          
1r2kb1r/p5p1/1np1p1N1/3pPnB1/1p1P2B1/qP6/2PQ1P1P/1K1R3R b k - bm Nc4;       
1r3r2/4bpkp/1qb1p1p1/3pP1P1/p1pP1Q2/PpP2N1R/1Pn1B2P/3RB2K w - - bm Qf6+;    
1r3rk1/3bb1pp/1qn1p3/3pP3/3P1N2/2Q2N2/2P3PP/R1BR3K w - - bm h4;             
1r3rk1/3bbppp/1qn2P2/p2pP1P1/3P4/2PB1N2/6K1/qNBQ1R2 w - - bm Bxh7+;         
1r3rk1/3bqpp1/p3p2p/n1ppP2N/2nP1P1P/2PQ1N2/P3B1P1/2R2RK1 w - - bm Ng5;      
1r3rk1/5p1p/p2pb1p1/3Np1P1/2pRPR2/qP2Q1N1/P1PK3P/8 w - - bm Nf5;            
1r4k1/pb3p1p/r1p1p1p1/2p1P3/P1P2P2/1PB5/2K3PP/5R2 w - - bm a5;              
1r6/4k3/r2p2p1/2pR1p1p/2P1pP1P/pPK1P1P1/P7/1B6 b - - bm Rxb3+;               
1rb1nrk1/1p1qp2p/p1np1p1Q/3NPp2/2P5/3B1N1P/P2B2P1/R6K w - - bm g4;          
1rb1qrk1/6pp/2n1pn2/3pN1P1/2pP1P2/b1p1B3/P3QN1P/1BR2RK1 w - - bm Rxc3;      
1rb1r1k1/2qn1pbp/pp1p2p1/2nP4/P1p1PP2/2N1BQNP/1PB3P1/R4R1K w - - bm e5;     
1rb2r1k/3p1pp1/p3p2p/1p2P3/4q3/1N2B1R1/PPP1N1P1/2KR1B2 w - - bm Nf4;        
1rb4k/p5np/3p1rp1/1ppB4/2N2P2/1P2R1P1/P1P4P/4R1K1 w - - bm Re8+;             
1rbq1r1k/7p/2np2p1/p2N1p2/R1B1PP1b/1PP1N3/8/3Q1K1R w - - bm Ra2;            
1rbq1rk1/1p2ppbn/p2p2p1/P1pP4/4P3/2PB1N2/2P3PP/R1B1QRK1 w - - bm e5;        
1rr1b1k1/1pq1bp2/p2p1np1/4p3/P2BP3/2NB2Q1/1PP3PP/4RR1K w - - bm Rxf6;       
2R5/k1p1p1K1/P1p1Pp2/5P2/7P/pB6/2p5/2r5 w - - bm Rxc7+;                      
2R5/p4pkp/2br1qp1/5P2/3p4/1P2Q1NP/P1P3P1/6K1 w - - bm Nh5+;                 
2b1r3/r2ppN2/8/1p1p1k2/pP1P4/2P3R1/PP3PP1/2K5 w - - bm Nd6+;                 
2b1rk2/5p2/p1P5/2p2P2/2p5/7B/P7/2KR4 w - - bm f6;                           
2b3r1/1p1p2pk/2nBp2p/2P1Ppq1/R7/4QBPP/5P2/5K2 w - - bm Qxg5;                
2bk2r1/5q2/1p2pP1Q/pP1pP1P1/P2P4/8/2RK4/8 w - - bm Kc1;                     
2bq1b2/1p3k2/1r1p1p1p/pNpP1PpP/P1P3P1/6B1/1P5Q/2K1R3 w - - bm Re6;          
2bqrr1k/p5b1/1p1p2pp/nPpBp3/P1P1N2P/3PN1P1/R4P1K/3Q1R2 w - - bm Nc3;        
2k2Br1/p6b/Pq1r4/1p2p1b1/1Ppp2p1/Q1P3N1/5RPP/R3N1K1 b - - bm Rf6;           
2k5/1pP4p/3p3P/3p1N2/1P3P2/7K/5b2/8 w - - bm Kg2;                           
2k5/p7/Pp1p1b2/1P1P1p2/2P2P1p/3K3P/5B2/8 w - - bm c5;                       
2kr3r/1p3pb1/pBnqp2p/P2p2p1/8/2PB4/1P3PPP/R2Q1RK1 w - - bm b4;              
2q2r1k/p1p1b1pp/br1p1n2/2p1N1BP/Q1P1P3/8/PP1N1PP1/2KR3R w - - bm Ng6+;   
2r1r1k1/1p4pp/pP1b4/2pP1p1b/2P1pP2/2B3PP/1P3KB1/R3R3 w - - bm g4;           
2r1r1k1/2P2bp1/p1Q2pq1/2R3b1/1P6/4p1Bp/4B2P/3R3K w - - bm Qf3;             
2r2bk1/pNq3p1/2Pp3p/1p1Prp2/1P2p1P1/6Q1/P4P1P/2RR2K1 w - - bm Qxe5;         
2r2r1k/qb3p1p/p2p1Np1/np1Pp1P1/2P5/3RP2P/5R2/4Q1K1 w - - bm Rf4;           
2r2rk1/1b3ppp/pn2p3/2qpP3/1p1Q1PP1/3B2R1/PPP1N2P/1K1R4 w - - bm Bxh7+;      
2r2rk1/1bpR1p2/1pq1pQp1/p3P2p/P1PR3P/5N2/2P2PPK/8 w - - bm Kg3;             
2r2rk1/2q2p1p/p1p1nPpQ/3p4/4p1B1/8/PPP3PP/R4R1K w - - bm Rf5;               
2r3k1/2b1Rpp1/p2p2qp/P7/1PpB4/2P3PP/5Q1K/8 w - - bm b5;                     
2r4r/3n1pk1/pq1p1bp1/3B4/1p2P1N1/7P/PP1Q1PK1/3RR3 w - - bm Bxf7;            
2r5/prkpR1p1/2p1ppK1/P1p1N1B1/P1P1P3/8/8/8 w - - bm Bf4;                    
3B4/1r2p3/r2p1p2/bkp1P1p1/1p1P1PPp/p1P1K2P/PPB5/8 w - - bm Ba4+;            
3Q4/3p4/P2p4/N2b4/8/4P3/5p1p/5Kbk w - - bm Qa8;                             
3b2n1/1q3p1k/6pp/np2N3/2bBPN2/1pP4P/4QPP1/1B4K1 w - - bm Nexg6;             
3k4/2pq3p/pp5R/4P3/P6P/2PN4/1PN3K1/8 w - - bm Nd4;                          
3k4/4pp2/n2n4/5BN1/3N4/b7/4K3/8 w - - bm Nxf7+;                             
3kB3/5K2/7p/3p4/3pn3/4NN2/8/1b4B1 w - - bm Nf5;                             
3nn3/2p2p1k/1p1pp1p1/p2B3p/r2B2N1/4P2N/3PKPP1/6q1 w - - bm Ng5+;             
3q1r1k/6rp/3p4/P2Pbp1Q/N3Pp1n/2P5/P1B2RPP/R6K b - - bm f3;                  
3r1r1k/pp5p/4b1pb/6q1/3P4/4p1BP/PP2Q1PK/3RRB2 b - - bm Qxg3+;               
3r1rk1/pbq1bp1p/1n1Rp1p1/2p1P1N1/4N2P/1P3Q2/PB3PP1/K6R w - - bm h5;         
3r3r/k7/2p5/1pPp1p1p/pP2pPpP/P1K1P1P1/2b5/BN6 w - - bm Kd4;                 
3rqbk1/2p3p1/b6p/Q1p5/2N1PP2/1P1P2P1/2P4P/5R1K b - - bm Bc8;                
4B3/1Pb4p/8/4p1k1/3p1p2/5K2/2P5/8 b - - bm e4+;                             
4K1k1/8/1p5p/1Pp3b1/8/1P3P2/P1B2P2/8 w - - bm f4;                           
4K2k/1pQp3p/1R4p1/1P4P1/8/3P3P/1q3r2/8 w - - bm Qd8;                        
4R3/P7/2bB2p1/r3pk2/2p2p1P/2P2P1K/6P1/8 w - - bm Rxe5+;                     
4b1k1/P4pPp/1R3P1P/2r5/8/1P6/1K6/8 w - - bm a8=B;                           
4b3/4kp1p/2pq1p2/p3pQ2/2B1P2P/5RP1/Pr1r1PK1/2R5 b - - bm h5;                
4b3/7p/4k3/B4pPP/5K2/P4P2/8/8 w - - bm g6;                                  
4bbk1/3nq2r/pr2p3/Np1p1p1p/1PpP1Pp1/2P1P1P1/PQ1NB1PR/2K4R b - - bm e5;      
4k1br/1K1p1n1r/2p2pN1/P2p1N2/2P3pP/5B2/P2P4/8 w - - bm Kc8;                
4k1rr/1R1R3p/8/8/8/2K5/7P/8 w k - bm Rd2;
4knQ1/7r/3p2p1/2bP1pP1/5P1N/6K1/8/8 b - - bm Rxh4;                          
4q1kn/2Bp1p2/1N1PpPp1/1P2P1P1/2N3b1/6p1/1P4Pb/7K w - - bm Na5;              
4q1kr/p6p/1prQPppB/4n3/4P3/2P5/PP2B2P/R5K1 w - - bm Qxe5;                   
4q2r/1b1kbp2/1p2p1p1/pP1pP1N1/P2P1PQP/3BK3/2R5/8 w - - bm Bxg6;             
4r1k1/1r1np3/1pqp1ppB/p7/2b1P1PQ/2P2P2/P3B2R/3R2K1 w - - bm Bg5;            
4r1rk/p3qpp1/1pnp1n1p/5P2/P1PPP3/4Q2P/2BB2R1/6RK w - - bm Rxg7;             
5N2/6N1/q2k3p/8/6p1/4K1PP/B5P1/8 w - - bm Nf5+;                             
5k2/8/pppppppp/8/PPPPPPPP/8/8/5K2 w - - bm d5;                              
5kN1/3p1q2/5P2/5PP1/2pK4/1p1R4/1P6/8 w - - bm Rxb3;                         
5nk1/r4p1p/2r1p1p1/3nB1PP/p2PBP2/R7/1P6/K6R w - - bm h6;                    
5nq1/1p1p2p1/8/B3p3/k7/5K2/2P2PP1/3Q4 w - - bm c4+;                         
5nr1/2Pp2pk/3Pp1p1/4P1P1/6P1/5K2/8/7n w - - bm c8=N;                        
5rk1/2p2Rpq/p2p2n1/2pPpQPp/4P2P/3P2N1/PP6/6K1 w - - bm Qe6;                 
5rk1/pp3p1p/7b/2pR4/8/2P4P/P1PNr1P1/2K4R b - - bm Rxd2;                     
6R1/8/2pB3k/2P4p/5p1q/5P2/4P1K1/8 w - - bm Bf8+;                            
6br/1KNp1n1r/2p2p2/P1ppRP2/1kP3pP/3PBB2/PN1P4/8 w - - bm Bxc5+;             
6k1/1bq1bpp1/p6p/2p1pP2/1rP1P1P1/2NQ4/2P4P/K2RR3 b - - bm Bd5;              
6k1/1qr1p2p/ppN5/3p1N2/6p1/1P1P2Pp/PP2PP1P/2RK4 w - - bm Ncxe7+;            
6k1/8/1pK4p/bPp5/8/1P6/P1B2P2/8 w - - bm b4;                                
6k1/p7/8/4B3/Pp3p1P/qP5P/P1Rb2K1/8 w - - bm Kf3;                            
6k1/ppn2p2/8/2P2P1p/1P2K3/2N5/P7/8 w - - bm Nd5;                            
6r1/6r1/2p1k1pp/p1pbP2q/Pp1p1PpP/1P1P2NR/1KPQ3R/8 b - - bm Qf5;             
7k/3q1pp1/1p3r2/p1bP4/P1P2p2/1P2rNpP/2Q3P1/4RR1K b - - bm Rxf3;             
7k/4PBNp/7P/2p5/2P5/2rq2Pp/1P3P1K/8 b - - bm Qxg3+;                         
7k/4r1p1/1p2P2p/P1p4q/1r5P/4Q1PB/4R2K/8 w - - bm a6;                        
7k/pp2Np1p/2p2P1N/5pP1/7K/P4n2/1q3Q2/5n2 w - - bm Kh5;                      
7q/b1p5/1p1Npkb1/pPP2ppP/P1P5/3B2P1/5P1R/K3R3 w - - bm hxg6;                
8/1B3b1p/7P/p2p4/P2pp1kp/Q7/1N1Pq2P/7K w - - bm Qh3+;                        
8/1P6/8/1b1K4/6p1/5pP1/5P1B/7k w - - bm b8=R;                               
8/1p1pNpbk/1q1P4/pP2p2K/P3N3/4P1P1/3P4/8 w - - bm Nc8;                      
8/1p1r2R1/p5p1/5bp1/2PB1k2/1PK5/P7/8 b - - bm Rxd4;                         
8/1p6/p4p1p/2p1P2k/5P2/6pP/1P4P1/6K1 w - - bm f5; 
8/2N4r/1p3pkp/8/5K1p/2P4N/P3Bn2/8 w - - bm Bh5+;                            
8/2p1q3/p3P3/2P4p/1PBP2kP/2N3P1/7K/8 w - - bm Be2+;                          
8/2pN1k2/p4p1p/Pn1R4/3b4/6Pp/1P3K1P/8 w - - bm Ke1;                         
8/2pb1k1K/3p2p1/5pP1/2PPpB2/PP6/8/8 b - -  bm e3;                           
8/2r3k1/8/1p1p1p2/p2PbPp1/PB4P1/1P1K4/5R2 w - - bm Rc1;                     
8/3P3k/n2K3p/2p3n1/1b4N1/2p1p1P1/8/3B4 w - - bm Nf6+;                       
8/3ppp1p/3P4/4N3/8/3n1pKp/8/7k w - - bm Nxd3;                               
8/4K2p/6pr/5pk1/1pB2R2/p4PP1/8/8 w - - bm Rg4+;                             
8/4nk2/1p3p2/1r1p2pp/1P1R1N1P/6P1/3KPP2/8 w - - bm Nd3;                     
8/4nk2/1p3p2/2rp2pp/1P1R1N1P/6P1/3KPP2/8 b - - am Rb5?;                     
8/4r1pk/2B5/1P3P2/2PrPb1p/6qP/1R1p2P1/3R2QK b - - bm Ra7;                   
8/5p2/N1p3p1/3pP1P1/7P/2kP4/Pb6/7K w - - bm h5;                             
8/6k1/2p2qp1/1p1n1p2/r2P4/p1P3P1/3Q1PK1/R6R w - - bm c4;                    
8/6pp/1K6/N5P1/3N4/8/npn1P3/k7 w - - bm Nab3+;                              
8/8/4kpp1/3p1b2/p6P/2B5/6P1/6K1 b - - bm Bh3;                               
8/8/4p1Pk/1rp1K1p1/4P1P1/1nP2Q2/p2b1P2/8 w - - bm Kf6;                      
8/8/8/1B6/6p1/8/4KPpp/3N2kr w - - bm Kd3;                                   
8/8/p2k1p2/1p1p3p/1P1P3p/P3NPP1/5K2/1b6 w - - bm Ng2;
8/bp4Pk/4KB2/R6p/2pNp1P1/p7/3p1Pnq/2r5 w - - bm Nc6;                        
8/p3N3/1n3N2/2n3pP/pkP5/8/3P4/K7 b - - bm Nxc4;                             
8/p3q1kp/1p2Pnp1/3pQ3/2pP4/1nP3N1/1B4PP/6K1 w - - bm Ba3;
8/p7/qkpN1p2/8/1B1P4/PP3K2/5P2/8 w - - bm Ba5+;                             
N7/8/2KQ2rp/6k1/3p3p/2p4P/4PP2/5N2 w - - bm f4+;                            
Nq3n1k/8/P1p2Npp/2Kp3R/pp6/n3p3/8/4Q3 w - - bm Nc7;                         
br1r2k1/5pp1/R6p/2pN4/P1P1q3/2P1p1P1/P3P2P/3RQ1K1 b - - bm Qxc4;            
k7/p1pR4/1p3p2/2P2rpB/PbP4p/2N1p2p/KP6/8 w - - bm Bf3+;                      
kr1b4/p1p2B2/2p5/2p1p3/KpP1P3/1P4N1/8/7R w - - bm Rh6;                     
n1QBq1k1/5p1p/5KP1/p7/8/8/8/8 w - - bm Bc7;                                 
nk1b4/2rPp3/4Q1p1/1K2Br2/5P2/8/1P6/8 w - - bm Ka6;                          
q1r1k2r/1b3pp1/p3pn2/P1b5/1pN1P2p/3B1P2/1P2Q1PP/R1B2R1K b k - bm Nh5;       
q1r5/k3ppp1/2R5/PP1KP2r/2p4Q/2p1p3/5pP1/3R4 w - - bm Qd4+;                   
q3nrk1/4bppp/3p4/r3nPP1/4P2P/NpQ1B3/1P4B1/1K1R3R b - - bm Nc7;              
q7/7R/k7/1p6/1p6/1P2B3/7K/8 w - - bm Bd4;                                   
qrb5/b1Pp3p/1pkB4/1p2P3/1P1KPp2/R4P1p/P3pP1P/4N1n1 w - - bm Rc3+;           
r1b1k1r1/1p2np1p/p1n1pQp1/3p4/3NPP2/P2RB3/2PK2PP/q4B1R w q - bm Be2;       
r1b1k2r/1p1pppb1/p5pp/3P4/q2p1B2/3P1Q2/PPP2PPP/R3R1K1 w kq - bm Rxe7+;      
r1b1qk1r/pn3pp1/1p2p3/3pP1Bp/1bPN4/4Q1R1/P2N1PP1/R5K1 w - - bm Bf6;         
r1b1qr1k/2p3pp/4p3/1pb1PpN1/pn3N1P/6B1/PPP1QPP1/2KR3R w - - bm Rd8;         
r1b1qr1k/2p3pp/4p3/1pb1PpN1/pn3N1P/8/PPP1QPP1/2KR3R w - - bm Rd8;           
r1b1qr1k/2p3pp/4p3/1pb1PpN1/pn3N1P/P7/1PP1QPP1/2KR3R w - - bm Rd8;          
r1b2rk1/1pq1nppp/pbn1p3/8/3N4/3BBN2/PPP1QPPP/3R1RK1 w - - bm Bxh7+;         
r1b2rk1/1pq2ppp/p1p1p3/2n1P3/2N2P2/3B4/PPP3PP/R2Q1RK1 w - - bm Bxh7+;        
r1b2rk1/2q1bppp/p2pp3/2n3PQ/1p1BP3/1BN5/PPP2P1P/2KR2R1 w - - bm Bf6;        
r1b2rk1/2q1bppp/pp2p3/2npP3/1n3P1P/2NBBN2/PPPQ2P1/1K1R3R w - - bm Bxh7+;    
r1b2rk1/3n1pb1/2p1p1p1/p5P1/Pp2B1NQ/1q4P1/2R2P2/3R2K1 w - - bm Rxd7;        
r1b2rk1/pp3ppp/1n2p3/3pP3/2P2B2/b1PB1qP1/P1Q1NP1P/1K1R3R w - - bm Nd4;      
r1b2rk1/pp3ppp/1n2p3/3pP3/2PN1BPq/b1PB4/P1Q2P1P/1K1R3R w - - bm Nf3;        
r1b3k1/ppp1q1pp/2n1p3/3pP2P/8/2NB2Q1/PPP3P1/2K2R2 w - - bm Bg6;             
r1b3k1/ppppn1pp/4n1q1/8/5P2/2N1B3/PPP3QP/3R1RK1 w - - bm f5;                
r1b3r1/5p1k/p1n2P1p/P1qpp1P1/1p1p4/3P2Q1/BPPB2P1/R4RK1 w - - bm Kf2;        
r1bq1b1r/pp1pp1pp/2n1k3/8/4nQ2/N1p1BN1P/PP3PP1/R3K2R w KQ - bm Nb5;         
r1bq1rk1/1p1nbppp/p3p3/2ppP3/5B1P/2PBP3/PP1N1PP1/R2QK2R w - - bm Bxh7+;     
r1bq1rk1/pp2b2p/2p1pppQ/8/1n1PN2P/3B1N2/PPP2PP1/2KR3R w - - bm Neg5;        
r1bq1rk1/pp2bppp/1n2p3/3pP3/8/2RBBN2/PP2QPPP/2R3K1 w - - bm Bxh7+;          
r1bqn1nk/ppp4p/3p4/3Pp1r1/2P1Pp2/2NB1P2/PP2N3/2K1Q1RR w - -  bm Rxh7+;       
r1bqr1k1/3n1ppp/p2p1b2/3N1PP1/1p1B1P2/1P6/1PP1Q2P/2KR2R1 w - - bm Qxe8+;    
r1br2k1/1p1nqppp/p1p1pn2/3p4/1bPP4/PPN1PN2/2BB1PPP/R2Q1RK1 b - - am Bxa3;   
r1k1n2n/8/pP6/5R2/8/1b1B4/4N3/1K5N w - - bm b7+;                            
r1n2N1k/2n2K1p/3pp3/5Pp1/b5R1/8/1PPP4/8 w - - bm Ng6+;                      
r1q1rbk1/2pp1ppp/p1b5/1p1NP3/3Q4/3R2B1/PPP2PPP/5RK1 w - - bm Nf6+;           
r1q1rbk1/2pp1ppp/p1b5/3NP3/3Q4/1P1R2B1/P4PPP/R5K1 w - - bm Nf6+;            
r1qn1rk1/p1pp1ppp/1p2p2b/1P2P3/P7/R2B1N2/1P4PP/3Q1R1K w - - bm Bxh7+;       
r2q1r2/1b2bpkp/n3p1p1/2ppP1P1/p6R/1PN1BQR1/NPP2P1P/4K3 w - - bm Qf6+;       
r2q1r2/1b2bpkp/p3p1p1/2ppP1P1/7R/1PN1BQR1/1PP2P1P/4K3 w - - bm Qf6+;        
r2q1rk1/p1pn1p2/1p2pPp1/3p2B1/2PP3Q/2b5/PP3P1P/2KR2Nb w - - bm Rd3;         
r2q1rk1/ppp2p2/3p1np1/4pNQ1/4P1pP/1PPP4/1P3P2/R3K1R1 w Q - bm Qh6;          
r2q3r/1p1bbQ2/4p1Bk/3pP3/1n1P1P1p/pP6/Pn4PP/R1B1R1K1 w - - bm g4;           
r2qkb1r/3bpppp/p4nn1/3P4/1p1N4/1QN3B1/PP3PPP/R3KB1R w KQkq  - bm Nc6;       
r2qr1k1/pp1bbp2/n5p1/2pPp2p/8/P2PP1PP/1P2N1BK/R1BQ1R2 w - - bm d6;          
r2qrbk1/1b3p2/3p2pB/1p1P1N2/1np1P3/5NRP/1P3PP1/1B1Qn1K1 w - - bm N3h4;       
r2qrbk1/1bpn1p1p/p4np1/1p1pp3/3PP3/1PP2NNP/P1B2PP1/R1BQR1K1 w - - bm Bg5;   
r2r2k1/pqp1bppp/1pn1pn2/8/2NP1B2/2N1P1P1/PPQ2P1P/R4RK1 b - - bm Rxd4;       
r3k2r/bppbqp2/P1np2n1/1B6/3pP1p1/P1P3B1/3N1PPN/R2Q1RK1 b kq - bm O-O-O;     
r3kb1r/4Pp2/pn3P2/1pp3B1/2p5/2N3P1/PP3P1P/3RKB1b w - - bm h4;
r3r1k1/1b1n1pbp/pq1p2p1/1pp1P3/3P1B2/nP1B1NNP/P4PP1/R2QR1K1 w - - bm Nh5;
r3r1k1/1b1nbp1p/1qn1p3/1p1pPp2/p2P4/P2BNN2/1P1Q1BPP/R4RK1 w - - bm Ng4;     
r3r1k1/pp1q1p2/2p2npb/PPPp1bnp/3PpN2/2N1P1PP/1R1B1PBK/3Q1R2 b - - bm Bg4;   
r3r1k1/pp1q1p2/2p2npb/PPPp4/3Pp3/2NNPpP1/1R1B1P1K/3Q3R b - - bm Kg7;        
r3r2k/1pq2pp1/4b2p/3pP3/p1nB3P/P2B1RQ1/1PP3P1/3R3K w - - bm Rf6;            
r4nk1/1p1rqp1p/2bNp1pP/3pP3/BR3QP1/P4R2/5P2/6K1 w - - bm Bxc6;              
r4r1k/1p1n1ppp/1qb1p3/2b1P3/2B3Q1/p1NR4/PPP3PP/1KB1R3 w - - bm Rh3;         
r4r1k/ppq4p/2n1bppP/2P1p3/2B2n2/1N3Q2/PBP2PP1/3RR1K1 w - - bm Qxf4;         
r4rk1/1bq1bppp/p1npp3/2nB1NP1/1p2P3/2N1B3/PPP1QP1P/2KR2R1 w - - bm Qh5;     
r4rk1/4bppp/bq2p3/npnpP3/p2B1P2/P1PB1N2/1P2QNPP/R4RK1 w - - bm Bxh7+;        
r4rk1/pb3pp1/1p1qpR2/2ppN3/3P4/2P4P/PP1pQ1P1/3R2K1 w - - bm Qxd2 Ng4;       
r5k1/1b2bppp/1n2p3/1P6/2qPP3/r1p2N2/1R2QPPP/1BR1B1K1 b - - bm cxb2;         
r5k1/6b1/2Nq4/2pP1p2/p1P1pPr1/Pp6/3R2PQ/1K3R2 b - - bm e3;                  
r5k1/p1pb2bp/3p3r/P1pPp1p1/2B1Pq2/1R2QPp1/1P4PP/5RBK b - - bm Rxh2+;        
r5rk/1bq1bpp1/1p1ppn1p/pP5P/2P1P3/P1N2P2/1B1Q1P2/1K1R1BR1 w - - bm Nd5;   
r6r/4k3/p2bP2p/2n2PP1/2BQn2P/1pP1p3/1q1BK3/3R3R b - - bm Qc2;               
r7/1QP1N1Kp/pn2P1b1/Nnk2p2/7p/p4BP1/1rPPp2q/8 w - - bm Nd5;                 
r7/1QpnN1Kp/p3P1b1/Nn1P1p2/3k3p/p4BP1/1rPPp2q/8 w - - bm d6;                
r7/1q1r1p1k/3p1Qpp/pbpP4/1nB1P1P1/1P3NBP/5P1K/4R3 w - - bm Bf4;             
rk1b4/p2p2p1/1P6/2R2P2/8/2K5/8/5B2 w - - bm Rc8+;
rn1qr1k1/1p2bppp/p3p3/3pP3/P2P1B2/2RB1Q1P/1P3PP1/R5K1 w - - bm Bxh7+;       
rn2kbnr/pp2ppp1/2p5/3pP1Bp/3P3P/3Q4/PqP2PP1/RN2K1NR w KQkq - bm e6;         
rn2kr2/1pp1b1p1/4p3/1Pp1P2p/p1P1NP1P/P7/1B4P1/3RR1K1 w - - bm g3;           
rn3r1k/pn1p1ppq/bpp4p/7P/4N1Q1/6P1/PP3PB1/R1B1R1K1 w - - bm Bg5;            
rn3r2/p2qp1k1/2pp1pp1/7n/1p1PP1b1/2N2N2/PPPQB3/2KR3R w - - bm Rdg1;         
rn3rk1/p2q1pp1/4p2p/2ppP1NQ/P7/2P1P3/2P3PP/R4RK1 w - - bm Rf6;              
rnb2r2/3pppkp/p5p1/qPpQ4/P1P1n3/4PN2/4KPPP/RN3B1R b - - bm Nd6;             
rnb2rk1/1pq1bppp/p3p3/2npP1P1/3N1P2/2NBB3/PPP4P/R2QK2R w KQ - bm Bxh7+;     
rnbq1rk1/p3bp2/2p1p1p1/1p1nP1P1/2pP1P2/2N5/PP4P1/RBBQK2R w KQ - bm Bd2;     
rnbq3r/pppp4/3b1pkp/5p2/2BP4/4P3/PPP2PPP/RN1QK2R w KQ - bm Qh5+;            
rnbqk2r/p4p2/2p1p3/1p2N1pp/PbpPn2P/2N1P1B1/1P3PP1/R2QKB1R w KQkq - bm Qf3;  
rq6/5k2/p3pP1p/3p2p1/6PP/1PB1Q3/2P5/1K6 w - - bm Qd3;                       
rqn2rk1/1p2ppb1/p1b3pp/2R1P1N1/8/4BB1Q/3R1PPP/6K1 w - - bm Nxf7;     

[mclane]

How much time do you give the engines ?

[Vinvin]

How much time do you give the engines ?

I'll post results for Hard-2020-beta3.epd very soon, please wait 1 or 2 days.

Vincent

[MikeGL]

[D]1r3r2/4bpkp/1qb1p1p1/3pP1P1/p1pP1Q2/PpP2N1R/1Pn1B2P/3RB2K w - - 0 1
[d]1r3r2/4bpkp/1qb1p1p1/3pP1P1/p1pP1Q2/PpP2N1R/1Pn1B2P/3RB2K w - - 0 1
After 6 fresh runs, SF can't find Qf6+! which wins quickly but I remember one thread here which
claims that Lc0 or another derivative NN engine solving this in less than 20 seconds.

[Vinvin]

Exactly,
I do have a dedicated chess Computer that runs for years now with 2 AA Cells.

I do normally only play 40/120 games. So over years playing tournament games with 2 AA cells.
Then you can imagine how much energy is wasted by your computers.

The engine I want to test hopefully not wasting so much energy.

Let's compare :
1) a Raspberry Pi 3B consuming 3 Watt running the latest Stockfish with 3200 Elo strength
and
2) A Pentium 100 (from 1996) consuming 4 Watt running a top engine from 1996 with 2400 Elo strength.

+800 Elo with less energy consumption : technology has improved a lot with time !