Is the Englund Gambit lost?

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Ovyron
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Joined: Tue Jul 03, 2007 4:30 am

Re: Is the Englund Gambit lost?

Post by Ovyron »

Cornfed wrote: Sun Jun 14, 2020 6:34 pm Put up your engines aside and enjoy the struggle that is actual chess. :wink:
Oh come on! You can't say this and then mention 3/0 and 1/0 "chess"... What requires "chess" to be chess starts at 10/0 at the minimum. Some people can start chess at 5/0 and their ratings will start with 2, but they're rare, and most people damage their brains by playing too fast chess, their minds get used to playing too fast and in 10/0 they'll barely use half their clock and the only way to reverse the damage is to stop blitz and bullet entirely and adapt their brains to think for a longer time instead of relying 100% in intuition.

To "enjoy the struggle of chess" people can't play in the time controls you propose :P

Bullet is all adrenaline and no chess.
Dann Corbit
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Re: Is the Englund Gambit lost?

Post by Dann Corbit »

I think this game (found on chessgames.com) is kind of interesting:
[pgn][Event "Politiken Cup"]
[Site "Copenhagen DEN"]
[Date "2000.07.25"]
[EventDate "2000.07.17"]
[Round "8"]
[Result "0-1"]
[White "Nezar Madhy"]
[Black "Flemming Preuss"]
[ECO "A40"]
[WhiteElo "?"]
[BlackElo "2072"]
[PlyCount "84"]

1. d4 e5 2. dxe5 Nc6 3. Nf3 Nge7 4. g3 Ng6 5. Qd5 Qe7 6. a3
Ncxe5 7. Nxe5 Nxe5 8. Bf4 f6 9. Bg2 c6 10. Qd4 d5 11. Qe3 g5
12. Bxe5 fxe5 13. Nd2 Bf5 14. O-O-O Bg7 15. Nf3 Bf6 16. Qb3
O-O-O 17. Nd2 e4 18. e3 Rhe8 19. Rhf1 Be6 20. Qa4 Kb8 21. c3
c5 22. c4 Rd6 23. cxd5 Bxd5 24. Nc4 Ra6 25. Qc2 Qe6 26. Rxd5
Qxd5 27. Rd1 Qe6 28. Nd2 Rb6 29. Nc4 Rc6 30. Nd2 c4 31. Nxe4
Rc7 32. Rd6 c3 33. Rxe6 cxb2+ 34. Kb1 Rxe6 35. Nc5 Rd6 36. Bf3
Rb6 37. Qf5 a6 38. Qd5 Ka7 39. Nd3 Rbc6 40. Ne5 Rc5 41. Qxc5+
Rxc5 42. Nd3 Rc3 0-1
[/pgn]
Taking ideas is not a vice, it is a virtue. We have another word for this. It is called learning.
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Ovyron
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Re: Is the Englund Gambit lost?

Post by Ovyron »

While this might be useless in the sea of variations, something that can be done is expanding Dann's analysis of depth 66's horizon. When you do this in lost positions, the score is higher than at the root. When you do this on drawn positions, the score tends towards 0.

I'll jump to this position:

1. d4 e5 2. dxe5 Nc6 3. Nf3 a6 4. Bf4 d5 5. e3 Nge7 6. Nc3 Be6 7. h3 h6 8. Bh2 g5 9. Ne2 Bg7 10. Nfd4 Nxd4 11. exd4 Ng6 12. Qd2 Bf8 13. O-O-O Qd7 14. Kb1 O-O-O

[d]2kr1b1r/1ppq1p2/p3b1np/3pP1p1/3P4/7P/PPPQNPPB/1K1R1B1R w - -

Here 15.Bg3 was analyzed to relative depth 38. While it's very rare, if all these moves hold to depth 68, then if I analyze it to depth 40, I'll be showing how this line would have continued at that depth, in a much shorter time. If it doesn't hold, we get to see which side needs to improve their play.

Qc3 is liked until depth 30, then the engine has a fight over Bg3 and Nc1, but Nc1 wins in the end:

30/43 0:37 +1.47++ 15.Qc3 (81.892.763) 2192
30/43 0:49 +1.26-- 15.Qc3 Kb8 (109.435.324) 2215
30/45 0:54 +1.41++ 15.Qc3 (122.240.703) 2230
30/45 0:59 +1.43 15.Qc3 Kb8 16.f3 Be7 17.Nc1 h5 18.a3 g4 19.Nb3 gxh3 20.gxh3 Nh4 21.Be2 Rhg8 22.Rdg1 Bf5 23.Bg3 Ng2 24.Rxg2 h4 25.Rhg1 Bxh3 26.Nc5 Bxc5 27.Bxh4 Rxg2 28.Rxg2 (132.315.397) 2237
31/44 1:02 +1.33-- 15.Qc3 Kb8 (139.530.646) 2245
31/44 1:03 +1.43++ 15.Nc1 (142.896.947) 2249
31/44 1:04 +1.44 15.Nc1 c5 16.dxc5 Bxc5 17.Nb3 Qc7 18.Nxc5 Qxc5 19.Qd4 Qxd4 20.Rxd4 h5 21.Be2 Nh4 22.a3 Kb8 23.Rg1 Nf5 24.Rd3 Ne7 25.Rd2 Rc8 26.c3 Rcg8 27.b3 Kc7 28.Rgd1 (144.300.010) 2251
32/47 1:09 +1.33-- 15.Nc1 c5 (156.167.006) 2260
32/49 1:42 +1.44++ 15.Bg3 (233.921.467) 2278
32/49 2:18 +1.43 15.Bg3 Kb8 16.f3 Qa4 17.a3 Be7 18.Bf2 f6 19.exf6 Bxf6 20.Nc1 Qc6 21.g3 Rhg8 22.Bd3 Bc8 23.Rde1 Bg7 24.Nb3 Rgf8 25.Be2 Qf6 26.Nc5 b6 27.Nd3 Rde8 28.Nb4 (317.389.495) 2288
33/45 2:27 +1.53++ 15.Bg3 (337.304.191) 2292
33/48 2:40 +1.63++ 15.Bg3 (368.321.889) 2292
33/48 2:41 +1.50 15.Nc1 c5 16.dxc5 Bxc5 17.Nb3 Qc7 18.Nxc5 Qxc5 19.Qd4 Qxd4 20.Rxd4 Rdg8 21.b3 Nh4 22.Rg1 Kb8 23.Bd3 Ng6 24.Kb2 Rc8 25.Be2 h5 26.Bd3 Ne7 27.Ra4 Rc6 28.Re1 (370.880.322) 2292
34/46 2:43 +1.40-- 15.Nc1 c5 (376.168.589) 2294
34/49 2:45 +1.50++ 15.Nc1 (380.120.491) 2295
34/49 2:47 +1.42 15.Nc1 c5 16.dxc5 Bxc5 17.Nb3 Qc7 18.Nxc5 Qxc5 19.Qd4 Qxd4 20.Rxd4 Rdg8 21.b3 h5 22.Kb2 Ne7 23.Rd2 Kb8 24.Be2 Nf5 25.Rd3 g4 26.Bf4 gxh3 27.gxh3 Rg2 28.Rf1 (384.429.479) 2296
35/46 2:50 +1.52++ 15.Nc1 (390.969.586) 2296
35/50 2:57 +1.45 15.Bg3 Be7 16.Nc1 Kb8 17.f3 Rhg8 18.Bd3 h5 19.Rhe1 Qc6 20.c3 Qd7 21.Bc2 Bf5 22.Nd3 Qb5 23.Ka1 h4 24.Bf2 Nf8 25.Be3 Qb6 26.Nc1 Qg6 27.Bxf5 Qxf5 28.Nd3 (408.346.320) 2297
36/50 3:19 +1.34-- 15.Bg3 Be7 (457.330.141) 2297
36/50 3:21 +1.45++ 15.Bg3 (463.615.334) 2296
36/50 3:48 +1.40 15.Nc1 c5 16.dxc5 Bxc5 17.Nb3 Qc7 18.Nxc5 Qxc5 19.Qd4 Qxd4 20.Rxd4 Rdg8 21.b3 h5 22.Kb2 Kb8 23.Be2 Rc8 24.Rc1 Ne7 25.Rd3 Ng6 26.a3 Nh4 27.g4 hxg4 28.hxg4 (526.018.823) 2303
37/53 3:52 +1.50++ 15.Nc1 (536.519.989) 2307
37/53 3:54 +1.44 15.Nc1 c5 16.dxc5 Bxc5 17.Nb3 Qc7 18.Nxc5 Qxc5 19.Qd4 Qxd4 20.Rxd4 Rdg8 21.b3 h5 22.Kb2 Kb8 23.Be2 Rc8 24.Rg1 Rc6 25.a4 Rc7 26.Rgd1 Rhc8 27.Rc1 h4 28.f4 (540.823.566) 2308
38/50 3:59 +1.54++ 15.Nc1 (554.155.446) 2312
38/50 4:25 +1.34-- 15.Nc1 c5 (616.002.049) 2320
38/57 4:36 +1.49++ 15.Nc1 (642.851.668) 2325
38/57 4:42 +1.55 15.Nc1 c5 16.dxc5 Bxc5 17.Nb3 Qc7 18.Nxc5 Qxc5 19.Qd4 Qxd4 20.Rxd4 Rdg8 21.b3 Nh4 22.Kb2 h5 23.Rd3 Kc7 24.Rg1 Ng6 25.Be2 Kb8 26.Rgd1 g4 27.a4 Nh4 28.Rg1 (658.230.256) 2327
39/59 4:57 +1.45-- 15.Nc1 c5 (695.256.396) 2335
39/59 5:07 +1.35-- 15.Nc1 c5 (716.431.806) 2331
39/59 5:13 +1.45++ 15.Nc1 (732.281.810) 2333
39/59 5:22 +1.46 15.Nc1 c5 16.dxc5 Bxc5 17.Nb3 Bb6 18.Nd4 Qa4 19.Be2 Qxd4 20.Qxd4 Bxd4 21.Rxd4 h5 22.Rd3 Kb8 23.Rd2 Rc8 24.b3 Nh4 25.Rg1 Ng6 26.Kb2 Rc7 27.Rgd1 Nh4 28.Bf1 (753.279.060) 2338
40/60 5:36 +1.56++ 15.Nc1 (790.543.286) 2347
40/60 5:44 +1.35-- 15.Nc1 c5 (810.132.264) 2350
40/60 5:47 +1.50++ 15.Nc1 (815.865.339) 2350
40/60 5:49 +1.44 15.Nc1 c5 16.dxc5 Bxc5 17.Nb3 Bb6 18.Nd4 Qa4 19.Be2 Qxd4 20.Qxd4 Bxd4 21.Rxd4 h5 22.Rhd1 Ne7 23.R4d2 Rdg8 24.Bd3 Ng6 25.b3 Kb8 26.Kb2 g4 27.hxg4 hxg4 28.Bg3 (821.486.020) 2349

Eval falling in white's favor, looks like black will need a better defense.
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mclane
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Re: Is the Englund Gambit lost?

Post by mclane »

What do you mean with "you analyzed it up to depth xy"

??

You let stockfish compute about it.
But stockfish is pruning away things.
It's not god himself.
What seems like a fairy tale today may be reality tomorrow.
Here we have a fairy tale of the day after tomorrow....
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Ovyron
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Re: Is the Englund Gambit lost?

Post by Ovyron »

mclane wrote: Mon Jun 15, 2020 3:49 pm What do you mean with "you analyzed it up to depth xy"

??

You let stockfish compute about it.
But stockfish is pruning away things.
It's not god himself.
It's called "relative depth". For this line this depth was achieved. For other deviations from this line (because they were pruned), this depth wasn't achieved.

It is helpful to know about these depths for other people that want to take a look, so they no longer waste time re-analyzing the same root position to any depth less than this (say, anybody jumping to the root and leaving the engine analyzing the position to depth 65 would be wasting their time as we already have data from depth 66, but anybody focusing their analysis in a move we have missing *to any depth* would not waste their time as we don't have public analysis of that line.)

It's about not reinventing the wheel every time. Of course anybody can beat us to the punch if Stockfish and Leela are not the best on the Englund, and they could easily provide a better line by an engine that understands it better, *at any depth*.
chrisw
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Re: Is the Englund Gambit lost?

Post by chrisw »

Ovyron wrote: Mon Jun 15, 2020 12:52 am
Cornfed wrote: Sun Jun 14, 2020 6:34 pm Put up your engines aside and enjoy the struggle that is actual chess. :wink:
Oh come on! You can't say this and then mention 3/0 and 1/0 "chess"... What requires "chess" to be chess starts at 10/0 at the minimum. Some people can start chess at 5/0 and their ratings will start with 2, but they're rare, and most people damage their brains by playing too fast chess, their minds get used to playing too fast and in 10/0 they'll barely use half their clock and the only way to reverse the damage is to stop blitz and bullet entirely and adapt their brains to think for a longer time instead of relying 100% in intuition.

To "enjoy the struggle of chess" people can't play in the time controls you propose :P

Bullet is all adrenaline and no chess.
Is entirely possible to both be able to play instantly and intuitively, and to also know how to OTB analyse. Strong players do both.
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Ovyron
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Re: Is the Englund Gambit lost?

Post by Ovyron »

Yeah, but strongly? I checked Hikaru Nakamura's bullet games, they showcased very poor chess, whatever intuition they had couldn't be seen. Of course he was sweeping anybody that came his way, but that's only because their bullet moves were even worse, and for the times where they got a winning position against Nakamura, he was able to still beat them on the clock with premove tricks, techniques unrelated to "chess".

The level of top humans 3 0 chess is also nothing to call home about, it's common to see big blunders played that aren't punished because neither player noticed some tactic. "Intuition" seems to only help in reaching positions where the opponent can't find the right moves with the time available, not to actually play good chess that requires time.

The only way to develop good OTB analysis skills is to play slow chess (and 10 0 isn't much to ask for.) I actually recommend people to find their level by getting into some time control x 0, and just ignore their clocks (you hide them while the game is going.) If you flag on time then you need to increase x. If you're left with much time on the clock, you reduce x. Once the level has been found, the player will try to raise x (so games aren't lost on time) and then spend as much of their available time of their game without looking at the clocks. This will teach them how to improve their analysis skills, unlike just playing slower time controls but not using the extra time because they rely on intuition.
Cornfed
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Full name: Brian D. Smith

Re: Is the Englund Gambit lost?

Post by Cornfed »

Ovyron wrote: Mon Jun 15, 2020 12:52 am
Cornfed wrote: Sun Jun 14, 2020 6:34 pm Put up your engines aside and enjoy the struggle that is actual chess. :wink:
Oh come on! You can't say this and then mention 3/0 and 1/0 "chess"... What requires "chess" to be chess starts at 10/0 at the minimum. Some people can start chess at 5/0 and their ratings will start with 2, but they're rare, and most people damage their brains by playing too fast chess, their minds get used to playing too fast and in 10/0 they'll barely use half their clock and the only way to reverse the damage is to stop blitz and bullet entirely and adapt their brains to think for a longer time instead of relying 100% in intuition.

To "enjoy the struggle of chess" people can't play in the time controls you propose :P

Bullet is all adrenaline and no chess.
As someone correctly says: GOOD players can do both...and usually do.
Beyond that, you conflate things...2+2 and get 5. I don't play the crap stuff in OTB tourneys or anything less than 5/0 online. NEVER said or implied that I did...

I play fast (usually 3/0 or 3/1) simply to challenge and test my intuition and 'feel' for positions. No one 'seriously calculates' at very fast time controls. Do yourself a favor and enjoy the struggle that is chess in various time controls...or you can fret over if something is or isn't playable with 'perfect play, if that floats your boat. Your choice.