feeks versus stockfish

[flok]

The ultimate fight!

[pgn][Event "Computer Chess Game"]
[Site "https://lichess.org/iEIWc25F"]
[Date "2018.01.15"]
[Round "-"]
[White "Feeks"]
[Black "Stockfish 8 64"]
[Result "0-1"]
[WhiteElo "?"]
[BlackElo "?"]
[Variant "Standard"]
[TimeControl "2700+15"]
[ECO "C00"]
[Opening "French Defense #2"]
[Termination "Normal"]
[Annotator "lichess.org"]

1. e4 e6 { C00 French Defense #2 } 2. Qh5 d5 3. e5 c5 4. Nc3 Nc6 5. Qxf7+ Kxf7 6. Nf3 Nb4 7. Kd1 Nh6 8. h3 Be7 9. d4 cxd4 10. Nxd5 Qxd5 11. a3 Nc6 12. Bxh6 gxh6 13. Bd3 Nxe5 14. Be4 Qxe4 15. Re1 Qd5 16. Rxe5 Qc6 17. Kd2 Rg8 18. Rg1 Bf6 19. Re2 b6 20. a4 Ba6 21. Nh4 Bxe2 22. Re1 Rac8 23. Kxe2 Qxc2+ 24. Kf1 Bxh4 25. g3 Bxg3 26. Re2 Qd3 27. fxg3 Rc1+ 28. Kf2 Qxg3# { Black wins by checkmate. } 0-1[/pgn]


https://lichess.org/iEIWc25F


https://vanheusden.com/feeks/

[Guenther]

The ultimate fight!

[pgn][Event "Computer Chess Game"]
[Site "https://lichess.org/iEIWc25F"]
[Date "2018.01.15"]
[Round "-"]
[White "Feeks"]
[Black "Stockfish 8 64"]
[Result "0-1"]
[WhiteElo "?"]
[BlackElo "?"]
[Variant "Standard"]
[TimeControl "2700+15"]
[ECO "C00"]
[Opening "French Defense #2"]
[Termination "Normal"]
[Annotator "lichess.org"]

1. e4 e6 { C00 French Defense #2 } 2. Qh5 d5 3. e5 c5 4. Nc3 Nc6 5. Qxf7+ Kxf7 6. Nf3 Nb4 7. Kd1 Nh6 8. h3 Be7 9. d4 cxd4 10. Nxd5 Qxd5 11. a3 Nc6 12. Bxh6 gxh6 13. Bd3 Nxe5 14. Be4 Qxe4 15. Re1 Qd5 16. Rxe5 Qc6 17. Kd2 Rg8 18. Rg1 Bf6 19. Re2 b6 20. a4 Ba6 21. Nh4 Bxe2 22. Re1 Rac8 23. Kxe2 Qxc2+ 24. Kf1 Bxh4 25. g3 Bxg3 26. Re2 Qd3 27. fxg3 Rc1+ 28. Kf2 Qxg3# { Black wins by checkmate. } 0-1[/pgn]


https://lichess.org/iEIWc25F


https://vanheusden.com/feeks/

Folkert can you explain Qxf7+?

[flok]

Difficult.

Code: Select all

Mon Jan 15 17:29:47 2018 IN: position startpos moves e2e4 e7e6 d1h5 d7d5 e4e5 c7c5 b1c3 b8c6
Mon Jan 15 17:29:47 2018 IN: go wtime 2156890 btime 2514850 winc 15000 binc 15000
Mon Jan 15 17:29:47 2018 time is up
Mon Jan 15 17:29:47 2018 mtg 35, ms 2156.890000, ti 15.000000
Mon Jan 15 17:29:47 2018 search for 143.792667 seconds
Mon Jan 15 17:29:47 2018 r1bqkbnr/pp3ppp/2n1p3/2ppP2Q/8/2N5/PPPP1PPP/R1B1KBNR w KQkq - 2 5
Mon Jan 15 17:29:47 2018 depth 1 score cp 185 time 36 nodes 47 pv f1b5
Mon Jan 15 17:29:47 2018 depth 2 score cp 128 time 132 nodes 197 pv f1b5 c8d7 b5c6
Mon Jan 15 17:29:48 2018 depth 3 score cp 121 time 716 nodes 1401 pv f1b5 a7a6 b5c6
Mon Jan 15 17:29:48 2018 depth 4 score cp 116 time 919 nodes 1941 pv f1b5 a7a6 b5c6 b7c6
Mon Jan 15 17:29:50 2018 depth 5 score cp 73 time 2568 nodes 10277 pv f1b5 c8d7 g1f3 c6b4 b5d3
Mon Jan 15 17:29:52 2018 depth 6 score cp 56 time 4430 nodes 19681 pv f1b5 c8d7 g1f3 c6b4 e1d1 d7b5
Mon Jan 15 17:29:53 2018 depth 7 score cp 106 time 6201 nodes 29501 pv f1b5 c8d7 b5c6 d7c6 d2d3 d8a5 c1g5
Mon Jan 15 17:30:11 2018 depth 8 score cp 51 time 24002 nodes 112726 pv f1b5 c8d7 g1f3 c6b4 b5d3 g7g6 h5g5 d8g5
Mon Jan 15 17:30:26 2018 depth 9 score cp 87 time 39205 nodes 219020 pv f1b5 c8d7 b5c6 d7c6 d2d3 g7g6 h5g4 h7h5 g4g5
Mon Jan 15 17:30:56 2018 depth 10 score cp 37 time 68589 nodes 423206 pv h5f7 e8f7 g1f3 d5d4 c3e4
Mon Jan 15 17:32:11 2018 time is up 
Mon Jan 15 17:32:11 2018 valid moves: [Move.from_uci('h5h7'), Move.from_uci('h5f7'), Move.from_uci('h5h6'), Move.from_uci('h5g6'), Move.from_uci('h5g5'), Move.from_uci('h5f5'), Move.from_uci('h5h4'), Move.from_uci('h5g4'), Move.from_uci('h5h3'), Move.from_uci('h5f3'), Move.from_uci('h5e2'), Move.from_uci('h5d1'), Move.from_uci('c3d5'), Move.from_uci('c3b5'), Move.from_uci('c3e4'), Move.from_uci('c3a4'), Move.from_uci('c3e2'), Move.from_uci('c3d1'), Move.from_uci('c3b1'), Move.from_uci('g1h3'), Move.from_uci('g1f3'), Move.from_uci('g1e2'), Move.from_uci('f1a6'), Move.from_uci('f1b5'), Move.from_uci('f1c4'), Move.from_uci('f1d3'), Move.from_uci('f1e2'), Move.from_uci('e1e2'), Move.from_uci('e1d1'), Move.from_uci('a1b1'), Move.from_uci('h2h3'), Move.from_uci('g2g3'), Move.from_uci('f2f3'), Move.from_uci('d2d3'), Move.from_uci('b2b3'), Move.from_uci('a2a3'), Move.from_uci('h2h4'), Move.from_uci('g2g4'), Move.from_uci('f2f4'), Move.from_uci('d2d4'), Move.from_uci('b2b4'), Move.from_uci('a2a4')]
Mon Jan 15 17:32:11 2018 selected move: [37, Move.from_uci('h5f7'), 10, 143.80965995788574]
Mon Jan 15 17:32:11 2018 nps: 6245.377883, nodes: 898148, tt_hits: 22.577119%, avg bco index: 0.45
Mon Jan 15 17:32:11 2018 time is up
Mon Jan 15 17:32:11 2018 OUT: bestmove h5f7

That's all I got for logging

But it is reproducable, that's promising.

I'll see if I can figure this out.

[flok]

Here it chooses c3-e4:

[d]r1bq1bnr/pp3kpp/4p3/2p1P3/1n1p4/2N2N2/PPPP1PPP/R1BK1B1R w - - 0 8

[flok]

Without tt:

Code: Select all

position fen r1bqkbnr/pp3ppp/2n1p3/2ppP2Q/8/2N5/PPPP1PPP/R1B1KBNR w KQkq - 2 5 
go depth 10
info depth 1 score cp 185 time 143 nodes 57 pv f1b5
info depth 2 score cp 128 time 448 nodes 224 pv f1b5
info depth 3 score cp 121 time 1610 nodes 2226 pv f1b5
info depth 4 score cp 83 time 2322 nodes 4000 pv f1b5
info depth 5 score cp 121 time 4120 nodes 10945 pv f1b5
info depth 6 score cp 71 time 8879 nodes 34959 pv f1b5
info depth 7 score cp 118 time 26189 nodes 151449 pv f1b5
info depth 8 score cp 68 time 45738 nodes 304596 pv f1b5
info depth 9 score cp 70 time 183091 nodes 1402021 pv f1b5
info depth 10 score cp 45 time 269405 nodes 2113753 pv f1b5
bestmove f1b5

[flok]

No idea. Probably due to limited evaluation (material, psq, mobility and passed pawns).