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Re: Dylan Sharp Vs. Harvey Williamson (G4)

Posted: Mon Dec 23, 2019 6:00 am
by Ovyron
It's just "positions visited" manually, so I played them and set my engines to analyze them. Whenever I look for alternative moves in a position, I don't count them as a new node, and whenever I analyze a position with a different engine, I don't count it as a new node.

The nodes analyzed in each position vary (Uri's 999999999999 was just an example), from 100000000 to 10000000000. They're nodes in a tree, and I guess I could easily have 4187000 nodes analyzed automatically if I used software like IDEA, but the most efficient way to analyze is to select carefully the next position to analyze.

Re: Dylan Sharp Vs. Harvey Williamson (G4)

Posted: Wed Dec 25, 2019 9:00 pm
by Ovyron
I wish everyone reading this a happy holiday and an awesome 2020! :mrgreen:

1. g4 d5 2. g5 e5 3. d4 exd4 4. Nf3 c5 5. Bg2 Ne7 6. c3 dxc3 7. Nxc3 Nbc6 8. O-O d4 9. Ne4 Ng6 10. a3 Bg4 11. Bd2 Bd6 12. Rc1 O-O 13. Nxc5 Bxc5 14. Rxc5 Qd7 15. Qb3 Rad8 16. Re1 Be6 17. Qd3 Rfe8 18. e4 b6 19. Rcc1 Bg4 20. Rxc6 Qxc6 21. Nxd4 Qc5 22. Be3 Ne5 23. Qc3 Qxc3 24. bxc3 Rc8 25. f3 Be6 26. Nb5


Re: Dylan Sharp Vs. Harvey Williamson (G4)

Posted: Wed Dec 25, 2019 10:36 pm
by Harvey Williamson

Merry Christmas!

Re: Dylan Sharp Vs. Harvey Williamson (G4)

Posted: Wed Dec 25, 2019 11:01 pm
by Ovyron
And just like that, I lost +90% of my analysis, as I spent most of that in 26...Re7, and if Nb5 Red8 was offered as conditional I'd have played Nb5 two weeks ago 🤣

Re: Dylan Sharp Vs. Harvey Williamson (G4)

Posted: Wed Dec 25, 2019 11:11 pm
by Ovyron
Oh yeah, I have to do this now before I add a single position to analysis, the exact count of the lost nodes:

26...Re7 (4711 positions visited)
26...Red8 (81 positions visited)
26...Nc4 (1 position visited - deemed as trivial draw :shock: )
99.98310035468391% of analysis becomes irrelevant.

So what happened? I found a drawing plan for 26...Red8, now I'll try busting it...

Re: Dylan Sharp Vs. Harvey Williamson (G4)

Posted: Thu Dec 26, 2019 12:48 am
by Ovyron
I don't know what black is up to, I don't have a mainline.

1. g4 d5 2. g5 e5 3. d4 exd4 4. Nf3 c5 5. Bg2 Ne7 6. c3 dxc3 7. Nxc3 Nbc6 8. O-O d4 9. Ne4 Ng6 10. a3 Bg4 11. Bd2 Bd6 12. Rc1 O-O 13. Nxc5 Bxc5 14. Rxc5 Qd7 15. Qb3 Rad8 16. Re1 Be6 17. Qd3 Rfe8 18. e4 b6 19. Rcc1 Bg4 20. Rxc6 Qxc6 21. Nxd4 Qc5 22. Be3 Ne5 23. Qc3 Qxc3 24. bxc3 Rc8 25. f3 Be6 26. Nb5 Red8 27. Bd4


Re: Dylan Sharp Vs. Harvey Williamson (G4)

Posted: Thu Dec 26, 2019 1:41 am
by Harvey Williamson

Re: Dylan Sharp Vs. Harvey Williamson (G4)

Posted: Sun Dec 29, 2019 1:09 am
by Ovyron
1. g4 d5 2. g5 e5 3. d4 exd4 4. Nf3 c5 5. Bg2 Ne7 6. c3 dxc3 7. Nxc3 Nbc6 8. O-O d4 9. Ne4 Ng6 10. a3 Bg4 11. Bd2 Bd6 12. Rc1 O-O 13. Nxc5 Bxc5 14. Rxc5 Qd7 15. Qb3 Rad8 16. Re1 Be6 17. Qd3 Rfe8 18. e4 b6 19. Rcc1 Bg4 20. Rxc6 Qxc6 21. Nxd4 Qc5 22. Be3 Ne5 23. Qc3 Qxc3 24. bxc3 Rc8 25. f3 Be6 26. Nb5 Red8 27. Bd4 Nc6 28. Be3


Re: Dylan Sharp Vs. Harvey Williamson (G4)

Posted: Sun Dec 29, 2019 3:24 am
by Ovyron
(Harvey's going to play a6)

Finding draws in these variations is much easier than finding draws on the 26...Re7 ones, so my working theory is that the huge exploding unresolvable tree after 26...Re7 is not just a nightmare for white, but for black also, so both sides have the common goal of cutting out the variations we need to analyze.

Re: Dylan Sharp Vs. Harvey Williamson (G4)

Posted: Sun Dec 29, 2019 4:19 am
by Harvey Williamson
Ovyron wrote:
Sun Dec 29, 2019 3:24 am
(Harvey's going to play a6)
Yes!

if 29. Nd4 Ne5