Revisiting g5 (Tough Tactical Test Position?)

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peter
Posts: 1778
Joined: Sat Feb 16, 2008 6:38 am
Full name: Peter Martan

Re: Revisiting g5 (Tough Tactical Test Position?)

Post by peter » Sat Mar 23, 2019 9:37 pm

Hi Louis!
zullil wrote:
Sat Mar 23, 2019 8:19 pm
-2.13 1... Rg8 2. Bd1 g5 3. hxg5 Nxg5 4. Qd3 Nf6 5. Nxg5 Rxg5 6. Bf3 Bg4 7. Kf1 Qd7 8. bxa5 bxa5 9. c5 h4 10. Ke2 Nxe4 11. Qxe4 Bf5 12. Qc4 e4 13. Bc3+ Kh7 14. Kd2 Rxg2 15. Bxe4 f3+ 16. Kd1 Re8 17. Nxd6 cxd6 18. Rb7 Qxb7 19. Bxf5+ Kg8 20. Be6+ Kf8 21. c6 Qh7 22. c7 Rg1+ 23. Be1 Qh8 24. Rb1 Qe5 25. Kc2 Rxe1 26. Rxe1 Qxe1 27. c8=Q Qxf2+ 28. Kb1 Qe1+ 29. Kb2 Qd2+ 30. Kb3 Qe3+ 31. Ka4 Rxc8 32. Qxc8+ Ke7 33. Qd7+ Kf6 34. Qxd6 Qf4+ 35. Qxf4+ Bxf4 36. Kxa5 f2 37. Bh3 Ke5 38. d6 Kxd6 39. a4 Ke5 40. Kb4 Ke4 41. a5 Kf3 42. Bf1 Kg3 43. a6 h3 (depth 52, 0:27:55)

-2.05 1... g5 2. hxg5 Nxg5 3. Nxg5 Qxg5 4. Rb3 Qg6 5. Nxc7 Rg8 6. g3 Ra7 7. Nb5 Rb7 8. Kg2 Nf6 9. Rh1 Bg4 10. Qe1 fxg3 11. fxg3 Bxd2 12. Qxd2 Nh7 13. Bd1 Qxe4+ 14. Kh2 Bxd1 15. Rxd1 Rd7 16. Re3 Qxc4 17. Qe2 Qxe2+ 18. Rxe2 axb4 19. axb4 Rg4 20. Rc2 Rxb4 21. Nc7 Nf6 22. Rf1 Ng4+ 23. Kh3 Ne3 24. Rf8+ Kh7 25. Re2 Rxc7 26. Rxe3 Rg7 27. Ref3 Rg6 28. R3f5 Kg7 29. Rb8 Rb1 30. Kh2 Rd1 31. Rxb6 Rxd5 32. Rxh5 Rd2+ 33. Kh3 Rd3 34. Kh4 Kf6 35. g4 Rd4 36. Kh3 Rgxg4 37. Rh6+ Rg6 38. Rxg6+ Kxg6 39. Kg3 Kf5 (depth 52, 0:27:55)
If you'd like too, you could try to give in 2.(23.)Rb3 instead of Bd1 after 1...(22...) Rg8 after having finished MV- pondering.
Thanks for so much hardware- time.
Peter.

zullil
Posts: 5607
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Full name: Louis Zulli

Re: Revisiting g5 (Tough Tactical Test Position?)

Post by zullil » Sun Mar 24, 2019 4:35 pm

zullil wrote:
Sat Mar 23, 2019 8:19 pm
zullil wrote:
Sat Mar 23, 2019 10:55 am


Here's Cfish-dev searching from the root position with MultiPV = 2:

-1.93 1... Rg8 2. bxa5 g5 3. Ne1 Ndf6 4. axb6 cxb6 5. Bb4 Bf8 6. Nf3 Bg4 7. Kf1 gxh4 8. Ke1 Qd7 9. Kd2 Ng5 10. Rb3 Rc8 11. Rh1 h3 12. gxh3 Bxf3 13. Rxf3 Nxf3+ 14. Qxf3 Rxc4 15. Nc3 Rc8 16. Bd3 Rg7 17. Re1 Kg8 18. Kc2 Qf7 19. a4 Nd7 20. Ba6 Ra8 21. Be2 h4 22. Ra1 Qe8 23. Bb5 Qg6 24. Be2 Qf7 25. Nb5 Rc8+ 26. Kb3 Qg6 27. Re1 Nf6 28. Nc3 Be7 29. Ba6 Ra8 30. Be2 Qg2 31. Rh1 Rb8 32. Ra1 Rc8 33. Rd1 Rxc3+ 34. Bxc3 (depth 51, 15:27:41)

-1.72 1... g5 2. hxg5 Nxg5 3. Nxg5 Qxg5 4. f3 Nf6 5. Qf2 h4 6. Kf1 axb4 7. Nxc7 Rxa3 8. Rxa3 bxa3 9. Ne6 Bxe6 10. dxe6 Rg8 11. e7 Qh5 12. Ke2 Rg3 13. Ra1 h3 14. gxh3 Rxh3 15. Rg1 a2 16. Bc3 Qf7 17. Qg2 Qxc4+ 18. Bd3 Qe6 19. Rh1 Rxh1 20. Qxh1 Ng8 21. Kd1 Nxe7 22. Kc2 Kh7 23. Kb2 Qc8 24. Qa1 Qc5 25. Qxa2 Qf2+ 26. Kb1 Qxf3 27. Qf7+ Bg7 28. Kc2 Qg2+ 29. Kb3 Ng6 30. Bb4 f3 31. Bb5 Kh6 32. Bxd6 Qg4 33. Bb4 Qxe4 34. Bd2+ Kh7 (depth 51, 15:27:41)

Search is continuing.
Now over 24 hours:

-2.13 1... Rg8 2. Bd1 g5 3. hxg5 Nxg5 4. Qd3 Nf6 5. Nxg5 Rxg5 6. Bf3 Bg4 7. Kf1 Qd7 8. bxa5 bxa5 9. c5 h4 10. Ke2 Nxe4 11. Qxe4 Bf5 12. Qc4 e4 13. Bc3+ Kh7 14. Kd2 Rxg2 15. Bxe4 f3+ 16. Kd1 Re8 17. Nxd6 cxd6 18. Rb7 Qxb7 19. Bxf5+ Kg8 20. Be6+ Kf8 21. c6 Qh7 22. c7 Rg1+ 23. Be1 Qh8 24. Rb1 Qe5 25. Kc2 Rxe1 26. Rxe1 Qxe1 27. c8=Q Qxf2+ 28. Kb1 Qe1+ 29. Kb2 Qd2+ 30. Kb3 Qe3+ 31. Ka4 Rxc8 32. Qxc8+ Ke7 33. Qd7+ Kf6 34. Qxd6 Qf4+ 35. Qxf4+ Bxf4 36. Kxa5 f2 37. Bh3 Ke5 38. d6 Kxd6 39. a4 Ke5 40. Kb4 Ke4 41. a5 Kf3 42. Bf1 Kg3 43. a6 h3 (depth 52, 0:27:55)

-2.05 1... g5 2. hxg5 Nxg5 3. Nxg5 Qxg5 4. Rb3 Qg6 5. Nxc7 Rg8 6. g3 Ra7 7. Nb5 Rb7 8. Kg2 Nf6 9. Rh1 Bg4 10. Qe1 fxg3 11. fxg3 Bxd2 12. Qxd2 Nh7 13. Bd1 Qxe4+ 14. Kh2 Bxd1 15. Rxd1 Rd7 16. Re3 Qxc4 17. Qe2 Qxe2+ 18. Rxe2 axb4 19. axb4 Rg4 20. Rc2 Rxb4 21. Nc7 Nf6 22. Rf1 Ng4+ 23. Kh3 Ne3 24. Rf8+ Kh7 25. Re2 Rxc7 26. Rxe3 Rg7 27. Ref3 Rg6 28. R3f5 Kg7 29. Rb8 Rb1 30. Kh2 Rd1 31. Rxb6 Rxd5 32. Rxh5 Rd2+ 33. Kh3 Rd3 34. Kh4 Kf6 35. g4 Rd4 36. Kh3 Rgxg4 37. Rh6+ Rg6 38. Rxg6+ Kxg6 39. Kg3 Kf5 (depth 52, 0:27:55)

Maybe one more iteration ...
Approaching two days, with just one iteration since the previous.

-2.28 1... g5 2. hxg5 Nxg5 3. Nxg5 Qxg5 4. Rb3 Qg6 5. Nxc7 Rg8 6. g3 Ra7 7. Nb5 Rb7 8. Kg2 Nf6 9. Rh1 Bg4 10. Qe1 fxg3 11. fxg3 Bxd2 12. Qxd2 Nh7 13. Bd1 Qxe4+ 14. Kh2 Bxd1 15. Rxd1 Rd7 16. Re3 Qxc4 17. Qe2 Qxe2+ 18. Rxe2 axb4 19. axb4 Rg4 20. Rc2 Rxb4 21. Nc7 Nf6 22. Rf1 Ng4+ 23. Kh3 Ne3 24. Rf8+ Kh7 25. Re2 Rxc7 26. Rxe3 Rd4 27. Rb3 Rxd5 28. Rxb6 Rg7 29. Rd8 Rg6 30. Rb3 Kh6 31. Rh8+ Kg5 32. Rf8 Rc5 33. Re8 Kf5 34. Rb1 Ke4 (depth 53, 20:19:54)

-2.14 1... Rg8 2. Kh2 g5 3. hxg5 Nxg5 4. Rh1 axb4 5. Kg1 Nc5 6. Nxe5 f3 7. Bxg5 dxe5 8. Bxd8 fxe2 9. Bf6+ Kh7 10. Re1 b3 11. Bb1 Bg4 12. Bxe5 Bf3 13. Bg3 Bxe4 14. Bxe4+ Nxe4 15. Rxe2 Nxg3 16. fxg3 Bc1 17. Nxc7 b2 18. Rxb2 Bxb2 19. Nxa8 Rxa8 20. g4 h4 21. g3 Rxa3 22. gxh4 Rg3+ 23. Kf2 Rxg4 24. Rd1 Rxc4 25. h5 Bf6 26. Kf3 Kg7 27. Re1 Kf7 28. Re6 Bd8 29. Rh6 Ke7 30. Rg6 Rh4 31. h6 Kf7 32. Rg7+ Kf8 33. Rd7 Ke8 34. Rh7 Be7 35. Ke3 Rh1 36. Ke4 Re1+ 37. Kf5 (depth 53, 20:19:54)

Am stopping the search from root now, to take a look at lines proposed by others. At least I have a well-stocked hash table.

zullil
Posts: 5607
Joined: Mon Jan 08, 2007 11:31 pm
Location: PA USA
Full name: Louis Zulli

Re: Revisiting g5 (Tough Tactical Test Position?)

Post by zullil » Sun Mar 24, 2019 7:47 pm

peter wrote:
Sat Mar 23, 2019 9:37 pm
Hi Louis!
zullil wrote:
Sat Mar 23, 2019 8:19 pm
-2.13 1... Rg8 2. Bd1 g5 3. hxg5 Nxg5 4. Qd3 Nf6 5. Nxg5 Rxg5 6. Bf3 Bg4 7. Kf1 Qd7 8. bxa5 bxa5 9. c5 h4 10. Ke2 Nxe4 11. Qxe4 Bf5 12. Qc4 e4 13. Bc3+ Kh7 14. Kd2 Rxg2 15. Bxe4 f3+ 16. Kd1 Re8 17. Nxd6 cxd6 18. Rb7 Qxb7 19. Bxf5+ Kg8 20. Be6+ Kf8 21. c6 Qh7 22. c7 Rg1+ 23. Be1 Qh8 24. Rb1 Qe5 25. Kc2 Rxe1 26. Rxe1 Qxe1 27. c8=Q Qxf2+ 28. Kb1 Qe1+ 29. Kb2 Qd2+ 30. Kb3 Qe3+ 31. Ka4 Rxc8 32. Qxc8+ Ke7 33. Qd7+ Kf6 34. Qxd6 Qf4+ 35. Qxf4+ Bxf4 36. Kxa5 f2 37. Bh3 Ke5 38. d6 Kxd6 39. a4 Ke5 40. Kb4 Ke4 41. a5 Kf3 42. Bf1 Kg3 43. a6 h3 (depth 52, 0:27:55)

-2.05 1... g5 2. hxg5 Nxg5 3. Nxg5 Qxg5 4. Rb3 Qg6 5. Nxc7 Rg8 6. g3 Ra7 7. Nb5 Rb7 8. Kg2 Nf6 9. Rh1 Bg4 10. Qe1 fxg3 11. fxg3 Bxd2 12. Qxd2 Nh7 13. Bd1 Qxe4+ 14. Kh2 Bxd1 15. Rxd1 Rd7 16. Re3 Qxc4 17. Qe2 Qxe2+ 18. Rxe2 axb4 19. axb4 Rg4 20. Rc2 Rxb4 21. Nc7 Nf6 22. Rf1 Ng4+ 23. Kh3 Ne3 24. Rf8+ Kh7 25. Re2 Rxc7 26. Rxe3 Rg7 27. Ref3 Rg6 28. R3f5 Kg7 29. Rb8 Rb1 30. Kh2 Rd1 31. Rxb6 Rxd5 32. Rxh5 Rd2+ 33. Kh3 Rd3 34. Kh4 Kf6 35. g4 Rd4 36. Kh3 Rgxg4 37. Rh6+ Rg6 38. Rxg6+ Kxg6 39. Kg3 Kf5 (depth 52, 0:27:55)
If you'd like too, you could try to give in 2.(23.)Rb3 instead of Bd1 after 1...(22...) Rg8 after having finished MV- pondering.
Thanks for so much hardware- time.
Hi Peter,

Here's what Cfish-dev shows for the position after Rg8 Rb3.



-2.51 2... Rg7 3. Kh2 axb4 4. Bxb4 g5 5. hxg5 Nxg5 6. Rh1 Nf8 7. Kg1 Nxf3+ 8. Qxf3 Bg4 9. Qd3 Qg5 10. Kf1 f3 11. g3 h4 12. Bd1 Kg8 13. Qc2 hxg3 14. fxg3 Rf7 15. Rh4 Bg7 16. Qh2 Nh7 17. Bd2 Qg6 18. Rxg4 Qxg4 19. Qh4 Qxh4 20. gxh4 Raf8 21. Bc1 Kh8 22. Bg5 Nxg5 23. hxg5 Kh7 24. Kf2 Kg6 25. Rxf3 Kxg5 26. Kg3 Bh6 27. Rxf7 Rxf7 28. Bg4 Rg7 29. Kf3 Kf6 30. Bf5 Bc1 31. Be6 Bf4 32. Kf2 Bg3+ 33. Kf3 Bh2 34. Ke2 Bg1 35. Bf5 Bd4 36. Be6 Rg3 (depth 44, 3:08:42)

So far, Bd1 seems better for White than Rb3, according to Cfish ...

peter
Posts: 1778
Joined: Sat Feb 16, 2008 6:38 am
Full name: Peter Martan

Re: Revisiting g5 (Tough Tactical Test Position?)

Post by peter » Sun Mar 24, 2019 8:00 pm

zullil wrote:
Sun Mar 24, 2019 7:47 pm
peter wrote:
Sat Mar 23, 2019 9:37 pm
Hi Louis!
zullil wrote:
Sat Mar 23, 2019 8:19 pm
-2.13 1... Rg8 2. Bd1 g5 3. hxg5 Nxg5 4. Qd3 Nf6 5. Nxg5 Rxg5 6. Bf3 Bg4 7. Kf1 Qd7 8. bxa5 bxa5 9. c5 h4 10. Ke2 Nxe4 11. Qxe4 Bf5 12. Qc4 e4 13. Bc3+ Kh7 14. Kd2 Rxg2 15. Bxe4 f3+ 16. Kd1 Re8 17. Nxd6 cxd6 18. Rb7 Qxb7 19. Bxf5+ Kg8 20. Be6+ Kf8 21. c6 Qh7 22. c7 Rg1+ 23. Be1 Qh8 24. Rb1 Qe5 25. Kc2 Rxe1 26. Rxe1 Qxe1 27. c8=Q Qxf2+ 28. Kb1 Qe1+ 29. Kb2 Qd2+ 30. Kb3 Qe3+ 31. Ka4 Rxc8 32. Qxc8+ Ke7 33. Qd7+ Kf6 34. Qxd6 Qf4+ 35. Qxf4+ Bxf4 36. Kxa5 f2 37. Bh3 Ke5 38. d6 Kxd6 39. a4 Ke5 40. Kb4 Ke4 41. a5 Kf3 42. Bf1 Kg3 43. a6 h3 (depth 52, 0:27:55)

-2.05 1... g5 2. hxg5 Nxg5 3. Nxg5 Qxg5 4. Rb3 Qg6 5. Nxc7 Rg8 6. g3 Ra7 7. Nb5 Rb7 8. Kg2 Nf6 9. Rh1 Bg4 10. Qe1 fxg3 11. fxg3 Bxd2 12. Qxd2 Nh7 13. Bd1 Qxe4+ 14. Kh2 Bxd1 15. Rxd1 Rd7 16. Re3 Qxc4 17. Qe2 Qxe2+ 18. Rxe2 axb4 19. axb4 Rg4 20. Rc2 Rxb4 21. Nc7 Nf6 22. Rf1 Ng4+ 23. Kh3 Ne3 24. Rf8+ Kh7 25. Re2 Rxc7 26. Rxe3 Rg7 27. Ref3 Rg6 28. R3f5 Kg7 29. Rb8 Rb1 30. Kh2 Rd1 31. Rxb6 Rxd5 32. Rxh5 Rd2+ 33. Kh3 Rd3 34. Kh4 Kf6 35. g4 Rd4 36. Kh3 Rgxg4 37. Rh6+ Rg6 38. Rxg6+ Kxg6 39. Kg3 Kf5 (depth 52, 0:27:55)
If you'd like too, you could try to give in 2.(23.)Rb3 instead of Bd1 after 1...(22...) Rg8 after having finished MV- pondering.
Thanks for so much hardware- time.
Hi Peter,

Here's what Cfish-dev shows for the position after Rg8 Rb3.



-2.51 2... Rg7 3. Kh2 axb4 4. Bxb4 g5 5. hxg5 Nxg5 6. Rh1 Nf8 7. Kg1 Nxf3+ 8. Qxf3 Bg4 9. Qd3 Qg5 10. Kf1 f3 11. g3 h4 12. Bd1 Kg8 13. Qc2 hxg3 14. fxg3 Rf7 15. Rh4 Bg7 16. Qh2 Nh7 17. Bd2 Qg6 18. Rxg4 Qxg4 19. Qh4 Qxh4 20. gxh4 Raf8 21. Bc1 Kh8 22. Bg5 Nxg5 23. hxg5 Kh7 24. Kf2 Kg6 25. Rxf3 Kxg5 26. Kg3 Bh6 27. Rxf7 Rxf7 28. Bg4 Rg7 29. Kf3 Kf6 30. Bf5 Bc1 31. Be6 Bf4 32. Kf2 Bg3+ 33. Kf3 Bh2 34. Ke2 Bg1 35. Bf5 Bd4 36. Be6 Rg3 (depth 44, 3:08:42)

So far, Bd1 seems better for White than Rb3, according to Cfish ...
Thanks, Louis, 2...(23...) Rg7 might be better than the ...axb4 I had there till now, even if I'll have to look at this some closer still. Yet I already think I have to revise my judgement 22...g5 to be provable better than ...Rg8. Both moves might probably win, hard to tell, which one more clearly and more forcedly.
Peter.

Dann Corbit
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Re: Revisiting g5 (Tough Tactical Test Position?)

Post by Dann Corbit » Mon Mar 25, 2019 6:19 pm

Thanks to everyone for all the excellent help, especially since my Stockfish process crashed 17 hours into the analysis.

Interestingly, Sting may have found a new counter to Rg8 (answer with Kf1), though I am not sure you can trust it because Sting does not get very deep and the score was still falling. Still, it might be worth a deeper look:

Searching:

Code: Select all

infinite: 1 ponder: 0 time: 0 increment: 0 moves to go: 0
 1   +2.18   00:00      73  bxa5 
 2   +2.26   00:00     255  bxa5 bxa5 
 3   +2.10   00:00     687  bxa5 bxa5 Bc3 
 4   +1.90   00:00    2310  bxa5 bxa5 Qe1 Nc5 
 5   +1.86   00:00    4138  g3 Nhf6 gxf4 Bxf4 Bxf4 
 6   +1.98   00:00    7012  bxa5 bxa5 Qe1 a4 Ba5 Nb6 
 7   +1.94   00:00   16339  bxa5 Nc5 axb6 cxb6 a4 Nf6 Ng5 Bg4 
 8   +1.90   00:00   34900  bxa5 Nc5 axb6 cxb6 a4 Nf6 Ng5 Rf8 Bb4 Qe7 Qf3 Bg4 
 9   +1.90   00:00   43560  bxa5 Nc5 
10   +1.90   00:00   56019  bxa5 Nc5 axb6 cxb6 a4 
11   +1.86   00:00  230855  bxa5 Nc5 axb6 cxb6 a4 Bf8 Bb4 g5 hxg5 Nxg5 a5 Nxf3+ Qxf3 Bg4 Qc3 Bh6 Bxc5 
12   +1.98   00:00  318837  bxa5 Nc5 axb6 cxb6 a4 Bg4 Bb4 Rg7 Bxc5 dxc5 Nc3 Nf6 a5 Rxa5 Rxa5 bxa5 
13   +1.74   00:00   1102K  bxa5 Nc5 axb6 cxb6 Qe1 Bg4 Nh2 Bc8 a4 Nf6 Nf3 Bg4 Ng5 Rg7 
14   +1.66   00:00   1823K  bxa5 Nc5 axb6 cxb6 Bc3 Bg7 a4 Bg4 Bb4 Bf6 a5 bxa5 Bxc5 dxc5 g3 g5 hxg5 Nxg5 
15   +1.66   00:00   2415K  bxa5 Nc5 axb6 cxb6 Bc3 Bg7 
16   +1.58   00:01   5638K  bxa5 Nc5 Qe1 g5 Bc3 Re8 Nxg5 Nxg5 hxg5 Bxg5 Bb4 Bg4 axb6 cxb6 f3 Bc8 
17   +1.54   00:01   7993K  bxa5 Nc5 Qe1 g5 Bc3 Re8 Nxg5 Nxg5 hxg5 Bxg5 axb6 
18   +1.86   00:02  16352K  bxa5 Nc5 Qe1 Nf6 axb6 cxb6 a4 Bg4 Nh2 Nb7 Ra3 Qe7 Nxg4 Nxg4 Rh3 Nc5 a5 bxa5 Bxa5 Bg7 Ra1 
19   +1.98   00:03  19526K  bxa5 Nc5 axb6 cxb6 Qe1 Ra6 Bc3 Re8 a4 g5 hxg5 Nxg5 Nxg5 Bxg5 a5 Bg4 f3 Bc8 axb6 Bh4 Qf1 
20   +2.06   00:03  21286K  bxa5 Nc5 axb6 cxb6 Qe1 Nf6 a4 Bg4 Ng5 Bxg5 hxg5 Ne8 f3 Bd7 Bb4 Bxb5 axb5 Rxa1 Rxa1 Qxg5 Bxc5 
21   +1.94   00:04  28223K  bxa5 Nc5 axb6 cxb6 Qe1 Nf6 a4 Bg4 Ng5 Bxg5 hxg5 Ne8 f3 Bd7 a5 bxa5 Rxa5 Rxa5 Bxa5 Qxg5 Bb6 Bxb5 cxb5 Nd7 Ba5 Nf6 Ra1 
22   +2.02   00:13 102189K  bxa5 Nc5 axb6 cxb6 Qe1 Nf6 Bc3 Ne8 a4 Bg4 Nh2 Qf6 Nxg4 hxg4 a5 bxa5 Bxa5 Qxh4 Bb4 Rxa1 Rxa1 g3 Bxc5 dxc5 
23   +2.02   00:14 107674K  bxa5 Nc5 
24   +1.86   00:26 205936K  bxa5 Nc5 axb6 cxb6 Qe1 Bg7 a4 Nb7 Bb4 Bg4 Nh2 Nf6 Qc3 Qe7 
25   +1.86   00:28 226014K  bxa5 Nc5 axb6 cxb6 Qe1 
26   +1.86   00:34 275557K  bxa5 Nc5 axb6 cxb6 Qe1 Bg7 a4 
27   +1.86   01:11 588268K  bxa5 Nc5 axb6 cxb6 Qe1 Bg7 a4 Nb7 Bb4 Bg4 Nh2 Nf6 Qc3 Qe7 Nxg4 hxg4 Qa3 
28   +1.86   01:26 714088K  bxa5 Nc5 axb6 cxb6 Qe1 
29   +0.89   26:03  14892M  bxa5 bxa5 Qe1 Rg7 Bxa5 Nc5 Bc3 Qf6 Bb4 g5 Bxc5 dxc5 Qc3 gxh4 Qxe5 h3 Qxf6 Nxf6 Nxc7 Rxg2+ 
30   +0.61 2:45:57  98808M  Kf1 Rg7 Ng1 Ba6 bxa5 Bxb5 cxb5 Qxh4 axb6 cxb6 Bb4 Nc5 a4 Nb7 Ra3 Rc7 a5 bxa5 b6 Rc8 Bc3 Nf6 f3 Qh2 Qf2 Nd7 Ba4 Ndc5 Bc6 a4 Nh3 Kg8 Be1 Ra6 Rb4 Qh1+ Ng1 Qh2 Qh4 Qxh4 Bxh4 Kf7 Nh3 Ra8 Ng5+ Bxg5 Bxg5 Rc8 
31   +0.61 3:02:30 108822M  Kf1 Rg7 Ng1 Ba6 
32   +0.61 3:21:47 120590M  Kf1 Rg7 Ng1 Ba6 bxa5 Bxb5 cxb5 
33   +0.44 10:57:20 397760M  Kf1 Rg7 Bd3 g5 hxg5 Bxg5 Rc1 h4 Ke1 Be7 Qf1 Kg8 Bc3 Bf6 Bc2 h3 gxh3 Ng5 Qh1 Nf8 Nxg5 Bxg5 Rd1 Ng6 bxa5 bxa5 Rd3 Nh4 Rb1 Bh6 c5 Rg2 cxd6 cxd6 
34   +0.24 16:36:07 606634M  Kf1 Rg7 Bd3 g5 hxg5 Bxg5 Ke1 Be7 Qf1 Ng5 Nxg5 Bxg5 f3 Nf6 Ke2 h4 Kd1 Nh5 
35   +0.24 20:13:57 738548M  Kf1 Rg7 Bd3 g5 hxg5 
36   +0.24 24:18:06 891306M  Kf1 Rg7 Bd3 g5 hxg5 Bxg5 

Nodes: 1066488783603
Nodes/second: 10215740
Best move: Kf1
Ponder move: Rg7
Taking ideas is not a vice, it is a virtue. We have another word for this. It is called learning.
But sharing ideas is an even greater virtue. We have another word for this. It is called teaching.

Dicaste
Posts: 87
Joined: Mon Apr 16, 2012 5:23 pm
Location: Istanbul, TURKEY

Re: Revisiting g5 (Tough Tactical Test Position?)

Post by Dicaste » Mon Mar 25, 2019 8:04 pm

After 2 mlnutes search with Thothfish(tuned parameters) + Syzygy

Code: Select all

New game Line
r1bq2rk/2pn3n/1p1p2pb/pN1Pp2p/1PP1Pp1P/P4N2/2BBQPP1/RR4K1 w - - 0 1

Analysis by Stockfish 240319 64 POPCNT:

1.Bc3 axb4 2.axb4 Rxa1 3.Rxa1 g5 4.hxg5 Nxg5 5.Nh4 f3 6.Nxf3 Nxf3+ 7.Qxf3 
  White is clearly better: +- (2.07)  Depth: 10/13   00:00:00
1.Qd1 Ba6 2.bxa5 bxa5 3.a4 g5 4.hxg5 Nxg5 5.Bxa5 Nxf3+ 6.Qxf3 Bxb5 7.axb5 
  White is clearly better: +/- (1.36)  Depth: 11/17   00:00:00
1.bxa5 bxa5 2.Qe1 Ba6 3.Bxa5 Bxb5 4.Rxb5 g5 5.hxg5 Nxg5 6.Qe2 Qe7 7.a4 
  White is slightly better: +/= (0.57)  Depth: 12/19   00:00:00
1.bxa5 bxa5 2.Qe1 Ba6 3.Bxa5 Bxb5 4.Rxb5 g5 5.hxg5 Nxg5 6.Qc3 Nxf3+ 7.Qxf3 Rg4 8.Qe2 Qh4 9.f3 Rgg8 10.Bxc7 
  White is slightly better: +/= (0.48)  Depth: 13/19   00:00:00  1361kN
1.bxa5 bxa5 2.Qe1 Ba6 3.Kf1 g5 4.hxg5 Bxb5 5.Rxb5 Nxg5 6.Nh4 Nf7 7.f3 
  White is better: +/- (0.87)  Depth: 14/20   00:00:00  1702kN
1.bxa5 bxa5 2.Nh2 Nc5 3.Bc3 Nf6 4.Rb2 Bd7 5.Rd1 a4 6.Nf3 Bg4 7.Rd2 Bg7 8.Rb1 Bxf3 9.Qxf3 
  The position is equal: = (0.07)  Depth: 15/23   00:00:01  5621kN
1.Bb3 g5 2.Ne1 g4 3.g3 axb4 4.axb4 Rxa1 5.Rxa1 fxg3 6.fxg3 Bxd2 7.Qxd2 Rf8 8.Ra7 
  The position is equal: = (-0.19)  Depth: 16/23   00:00:01  8211kN
1.Kf1 axb4 2.axb4 Rxa1 3.Rxa1 g5 4.hxg5 Nxg5 5.Ra7 Nf6 6.Nxg5 Bxg5 7.Nxc7 Rg7 8.Nb5 Rxa7 9.Nxa7 Bd7 10.c5 bxc5 
  Black is slightly better: =/+ (-0.47)  Depth: 17/26   00:00:02  16602kN
1.Kf1 axb4 2.axb4 Rxa1 3.Rxa1 g5 4.hxg5 Nxg5 5.Ra7 Nf6 6.Nxg5 Bxg5 7.Nxc7 Rg7 8.Nb5 Rxa7 9.Nxa7 Bd7 10.c5 bxc5 
  Black is better: -/+ (-1.00 --)  Depth: 18/31   00:00:03  33808kN
1.Kf1 axb4 2.axb4 Rxa1 3.Rxa1 g5 4.hxg5 Nxg5 5.Ra7 Nf6 6.Nxg5 Bxg5 7.Nxc7 Rg7 8.Nb5 Rxa7 9.Nxa7 Bd7 10.b5 h4 11.Nc6 Qa8 12.Be1 h3 13.gxh3 
  Black is better: -/+ (-0.93)  Depth: 18/31   00:00:03  34074kN
1.Kf1 axb4 2.axb4 Rxa1 3.Rxa1 g5 4.hxg5 Nxg5 5.Ra7 Nf6 6.Nxg5 Bxg5 7.Nxc7 Rg7 8.Nb5 Rxa7 9.Nxa7 Bd7 10.b5 h4 11.Nc6 Qa8 12.Be1 h3 13.gxh3 
  Black is better: -/+ (-0.84 ++)  Depth: 19/29   00:00:03  34103kN
1.Kf1 axb4 2.axb4 Rxa1 3.Rxa1 g5 4.hxg5 Nxg5 5.Ra7 Nf6 6.Nxg5 Bxg5 7.Nxc7 Rg7 8.Nb5 Rxa7 9.Nxa7 Bd7 10.b5 h4 11.Nc6 Qa8 12.Be1 h3 13.gxh3 
  Black is better: -/+ (-0.74 ++)  Depth: 19/29   00:00:03  34109kN
1.Kf1 axb4 2.axb4 Rxa1 3.Rxa1 g5 4.hxg5 Nxg5 5.Ra7 Nf6 6.Nxg5 Bxg5 7.Nxc7 Rg7 8.Nb5 Rxa7 9.Nxa7 Bd7 10.b5 h4 11.Nc6 Qa8 12.Be1 h3 13.gxh3 
  Black is slightly better: =/+ (-0.60 ++)  Depth: 19/29   00:00:03  34117kN
1.Kf1 axb4 2.axb4 Rxa1 3.Rxa1 g5 4.hxg5 Nxg5 5.Ra7 Nf6 6.Nh4 f3 7.Nxf3 Nxf3 8.Bxh6 Bh3 9.Qxf3 Bxg2+ 10.Qxg2 Rxg2 11.Kxg2 Ng4 12.Be3 Nxe3+ 13.fxe3 
  Black is slightly better: =/+ (-0.46)  Depth: 19/29   00:00:03  34124kN
1.Kf1 axb4 2.axb4 Rxa1 3.Rxa1 g5 4.hxg5 Nxg5 5.Ra7 Nf6 6.Nh4 f3 7.Nxf3 Nxf3 8.Bxh6 Bh3 9.Qxf3 Bxg2+ 10.Qxg2 Rxg2 11.Kxg2 Ng4 12.Be3 Nxe3+ 13.fxe3 
  Black is slightly better: =/+ (-0.55 --)  Depth: 20/29   00:00:04  37897kN
1.Kf1 axb4 2.axb4 Rxa1 3.Rxa1 g5 4.hxg5 Nxg5 5.Ra7 Nf6 6.Nh4 f3 7.Nxf3 Nxf3 8.Bxh6 Bh3 9.Qxf3 Bxg2+ 10.Qxg2 Rxg2 11.Kxg2 Ng4 12.Be3 Nxe3+ 13.fxe3 
  Black is slightly better: =/+ (-0.65 --)  Depth: 20/30   00:00:04  39906kN
1.Kf1 axb4 2.axb4 Rxa1 3.Rxa1 g5 4.hxg5 Nxg5 5.Ra7 Nf6 6.Nh4 f3 7.Nxf3 Nxf3 8.Bxh6 Bh3 9.Qxf3 Bxg2+ 10.Qxg2 Rxg2 11.Kxg2 Ng4 12.Be3 Nxe3+ 13.fxe3 
  Black is better: -/+ (-0.79 --)  Depth: 20/30   00:00:04  42174kN
1.Kf1 axb4 2.axb4 Rxa1 3.Rxa1 g5 4.hxg5 Nxg5 5.Ra7 Nf6 6.Nh4 f3 7.Nxf3 Nxf3 8.Bxh6 Bh3 9.Qxf3 Bxg2+ 10.Qxg2 Rxg2 11.Kxg2 Ng4 12.Be3 Nxe3+ 13.fxe3 
  Black is better: -/+ (-0.99 --)  Depth: 20/31   00:00:04  45327kN
1.Nh2 axb4 2.axb4 Rxa1 3.Rxa1 Ndf6 4.Ra8 g5 5.Nf3 g4 6.Ne1 g3 7.Nf3 gxf2+ 8.Qxf2 Ng4 9.Qe2 Nhf6 10.Ba4 Ne3 11.Bxe3 fxe3 12.Na7 Nxe4 13.Rxc8 
  Black is better: -/+ (-0.94)  Depth: 20/31   00:00:05  55550kN
1.Nh2 axb4 2.axb4 Rxa1 3.Rxa1 Ndf6 4.Ra8 g5 5.Nf3 g4 6.Ne1 g3 7.Nf3 gxf2+ 8.Qxf2 Ng4 9.Qe2 Nhf6 10.Ba4 Ne3 11.Bxe3 fxe3 12.Na7 Nxe4 13.Rxc8 
  Black is better: -/+ (-1.04 --)  Depth: 21/32   00:00:06  58725kN
1.Nh2 axb4 2.axb4 Rxa1 3.Rxa1 Ndf6 4.Ra8 g5 5.Nf3 g4 6.Ne1 g3 7.Nf3 gxf2+ 8.Qxf2 Ng4 9.Qe2 Nhf6 10.Ba4 Ne3 11.Bxe3 fxe3 12.Na7 Nxe4 13.Rxc8 
  Black is better: -/+ (-1.13 --)  Depth: 21/33   00:00:06  64405kN
1.Nh2 axb4 2.axb4 Rxa1 3.Rxa1 Ndf6 4.Ra8 g5 5.Nf3 g4 6.Ne1 g3 7.Nf3 gxf2+ 8.Qxf2 Ng4 9.Qe2 Nhf6 10.Ba4 Ne3 11.Bxe3 fxe3 12.Na7 Nxe4 13.Rxc8 
  Black is better: -/+ (-1.27 --)  Depth: 21/36   00:00:07  75959kN
1.Nh2 axb4 2.axb4 Rxa1 3.Rxa1 Ndf6 4.Ra8 g5 5.Nf3 g4 6.Ne1 g3 7.Nf3 gxf2+ 8.Qxf2 Ng4 9.Qe2 Nhf6 10.Ba4 Ne3 11.Bxe3 fxe3 12.Na7 Nxe4 13.Rxc8 
  Black is clearly better: -/+ (-1.47 --)  Depth: 21/36   00:00:09  89538kN
1.Nh2 Ndf6 2.bxa5 bxa5 3.Kh1 g5 4.hxg5 Nxg5 5.c5 h4 6.Rg1 h3 7.g4 dxc5 8.f3 Ba6 9.a4 Bxb5 10.axb5 Qd6 11.Bxa5 Qe7 
  Black is clearly better: -/+ (-1.38)  Depth: 21/36   00:00:10  98967kN
1.Kf1 
  Black is better: -/+ (-1.11 ++)  Depth: 22/37   00:00:10  106MN
1.Kf1 
  Black is better: -/+ (-1.00 ++)  Depth: 22/42   00:00:10  106MN
1.Kf1 
  Black is better: -/+ (-0.86 ++)  Depth: 22/42   00:00:10  106MN
1.Kf1 g5 
  Black is clearly better: -/+ (-1.47 --)  Depth: 22/42   00:00:11  118MN
1.Bd1 g5 2.hxg5 Nxg5 3.Qd3 h4 4.Nxg5 Qxg5 5.Bf3 axb4 6.Bxb4 Qd8 7.Kf1 Nc5 8.Bxc5 bxc5 9.Ke2 Bd7 10.a4 Ra5 11.Rf1 Bg5 12.Nc3 Qf6 13.Rh1 
  Black is clearly better: -/+ (-1.47)  Depth: 22/42   00:00:15  158MN
1.Bd1 g5 2.hxg5 Nxg5 3.Qd3 h4 4.Nxg5 Qxg5 5.Bf3 axb4 6.Bxb4 Qd8 7.Kf1 Nc5 8.Bxc5 bxc5 9.Ke2 Bd7 10.a4 Ra5 11.Rf1 Bg5 12.Nc3 Qf6 13.Rh1 
  Black is clearly better: -/+ (-1.56 --)  Depth: 23/36   00:00:17  171MN
1.Bd1 g5 2.hxg5 Nxg5 3.Qd3 h4 4.Nxg5 Qxg5 5.Bf3 axb4 6.Bxb4 Qd8 7.Kf1 Nc5 8.Bxc5 bxc5 9.Ke2 Bd7 10.a4 Ra5 11.Rf1 Bg5 12.Nc3 Qf6 13.Rh1 
  Black is clearly better: -+ (-1.66 --)  Depth: 23/36   00:00:20  205MN
1.Bd1 g5 2.hxg5 Nxg5 3.Qd3 h4 4.Nxg5 Qxg5 5.Bf3 axb4 6.Bxb4 Qd8 7.Kf1 Nc5 8.Bxc5 bxc5 9.Ke2 Bd7 10.a4 Ra5 11.Rf1 Bg5 12.Nc3 Qf6 13.Rh1 
  Black is clearly better: -+ (-1.80 --)  Depth: 23/37   00:00:25  252MN
1.bxa5 
  Black is clearly better: -+ (-1.68 ++)  Depth: 23/37   00:00:26  267MN
1.Kh2 
  Black is clearly better: -/+ (-1.41 ++)  Depth: 23/37   00:00:31  312MN
1.Kh2 axb4 2.axb4 Rxa1 3.Rxa1 g5 4.Ng1 Ndf6 5.Ra8 gxh4 6.f3 h3 7.Nxh3 Ng4+ 8.Kh1 Ne3 9.Bxe3 fxe3 10.Na7 Qd7 11.Nxc8 Rxc8 12.Ra7 Qg7 13.c5 bxc5 14.bxc5 
  Black is clearly better: -/+ (-1.36)  Depth: 23/37   00:00:31  313MN
1.Kh2 axb4 2.axb4 Rxa1 3.Rxa1 g5 4.Ng1 Ndf6 5.Ra8 gxh4 6.f3 h3 7.Nxh3 Ng4+ 8.Kh1 Ne3 9.Bxe3 fxe3 10.Na7 Qd7 11.Nxc8 Rxc8 12.Ra7 Qg7 13.c5 bxc5 14.bxc5 
  Black is clearly better: -/+ (-1.46 --)  Depth: 24/34   00:00:31  317MN
1.Kh2 axb4 2.axb4 Rxa1 3.Rxa1 g5 4.Ng1 Ndf6 5.Ra8 gxh4 6.f3 h3 7.Nxh3 Ng4+ 8.Kh1 Ne3 9.Bxe3 fxe3 10.Na7 Qd7 11.Nxc8 Rxc8 12.Ra7 Qg7 13.c5 bxc5 14.bxc5 
  Black is clearly better: -/+ (-1.55 --)  Depth: 24/39   00:00:32  323MN
1.bxa5 
  Black is clearly better: -/+ (-1.46 ++)  Depth: 24/40   00:00:32  328MN
1.bxa5 
  Black is better: -/+ (-1.26 ++)  Depth: 24/40   00:00:32  328MN
1.bxa5 bxa5 2.Qe1 g5 3.Bxa5 Rxa5 4.Qxa5 gxh4 5.Kh1 Nc5 6.Qxc7 Qxc7 7.Nxc7 h3 8.gxh3 Bxh3 9.Rg1 Bg4 10.Nh2 Be2 11.Nb5 Bf8 12.Nc3 Bxc4 13.Nf3 Be7 14.Rxg8+ Kxg8 15.Kg2 Kf7 16.a4 Ng5 
  Black is better: -/+ (-1.25)  Depth: 24/40   00:00:32  328MN
1.bxa5 bxa5 2.Qe1 g5 3.Bxa5 Rxa5 4.Qxa5 gxh4 5.Kh1 Nc5 6.Qxc7 Qxc7 7.Nxc7 h3 8.gxh3 Bxh3 9.Rg1 Bg4 10.Nh2 Be2 11.Nb5 Bf8 12.Nc3 Bxc4 13.Nf3 Be7 14.Rxg8+ Kxg8 15.Kg2 Kf7 16.a4 Ng5 
  Black is better: -/+ (-1.16 ++)  Depth: 25/36   00:00:32  329MN
1.bxa5 bxa5 2.Qe1 g5 3.Bxa5 Rxa5 4.Qxa5 gxh4 5.Kh1 Nc5 6.Qxc7 Qxc7 7.Nxc7 h3 8.gxh3 Bxh3 9.Rg1 Bg4 10.Nh2 Be2 11.Nb5 Bf8 12.Nc3 Bxc4 13.Nf3 Be7 14.Rxg8+ Kxg8 15.Kg2 Kf7 16.a4 Ng5 
  Black is better: -/+ (-1.07 ++)  Depth: 25/38   00:00:33  332MN
1.bxa5 bxa5 2.Qe1 g5 3.Bxa5 Rxa5 4.Qxa5 gxh4 5.Kh1 Nc5 6.Qxc7 Qxc7 7.Nxc7 h3 8.gxh3 Bxh3 9.Rg1 Bg4 10.Nh2 Be2 11.Nb5 Bf8 12.Nc3 Bxc4 13.Nf3 Be7 14.Rxg8+ Kxg8 15.Kg2 Kf7 16.a4 Ng5 
  Black is clearly better: -/+ (-1.35 --)  Depth: 25/38   00:00:33  333MN
1.bxa5 bxa5 2.Qe1 g5 3.Bxa5 Rxa5 4.Qxa5 gxh4 5.Kh1 Nc5 6.Qxc7 Qxc7 7.Nxc7 h3 8.gxh3 Bxh3 9.Rg1 Bg4 10.Nh2 Be2 11.Nb5 Bf8 12.Nc3 Bxc4 13.Nf3 Be7 14.Rxg8+ Kxg8 15.Kg2 Kf7 16.a4 Ng5 
  Black is better: -/+ (-1.14 ++)  Depth: 25/44   00:00:33  333MN
1.bxa5 bxa5 2.Qe1 g5 3.Bxa5 Rxa5 4.Qxa5 gxh4 5.Kh1 Nc5 6.Qxc7 Qxc7 7.Nxc7 h3 8.gxh3 Bxh3 9.Rg1 Bg4 10.Nh2 Be2 11.Nb5 Bf8 12.Nc3 Bxc4 13.Nf3 Be7 14.Rxg8+ Kxg8 15.Kg2 Kf7 16.a4 Ng5 
  Black is clearly better: -/+ (-1.54 --)  Depth: 25/44   00:00:34  350MN
1.Kh2 axb4 2.axb4 Rxa1 3.Rxa1 g5 4.Ng1 Ndf6 5.Ra8 Ng4+ 6.Kh1 gxh4 7.Na7 Qd7 8.Nxc8 Rxc8 9.Ra7 Ng5 10.c5 bxc5 11.bxc5 Qd8 12.Nf3 Nxf3 13.Qxf3 dxc5 14.Kg1 Qf6 15.Bd1 
  Black is clearly better: -/+ (-1.57)  Depth: 25/44   00:00:38  383MN
1.Kh2 axb4 2.axb4 Rxa1 3.Rxa1 g5 4.Ng1 Ndf6 5.Ra8 Ng4+ 6.Kh1 gxh4 7.Na7 Qd7 8.Nxc8 Rxc8 9.Ra7 Ng5 10.c5 bxc5 11.bxc5 Qd8 12.Nf3 Nxf3 13.Qxf3 dxc5 14.Kg1 Qf6 15.Bd1 
  Black is clearly better: -+ (-1.67 --)  Depth: 26/35   00:00:40  407MN
1.Kh2 axb4 2.axb4 Rxa1 3.Rxa1 g5 4.Ng1 Ndf6 5.Ra8 Ng4+ 6.Kh1 gxh4 7.Na7 Qd7 8.Nxc8 Rxc8 9.Ra7 Ng5 10.c5 bxc5 11.bxc5 Qd8 12.Nf3 Nxf3 13.Qxf3 dxc5 14.Kg1 Qf6 15.Bd1 
  Black is clearly better: -+ (-1.76 --)  Depth: 26/35   00:00:43  442MN
1.Kh2 g5 
  Black is clearly better: -+ (-1.90 --)  Depth: 26/40   00:00:50  511MN
1.a4 g5 2.hxg5 Nxg5 3.Ra3 Nxf3+ 4.Qxf3 Nf6 5.bxa5 bxa5 6.c5 dxc5 7.Rc3 h4 8.Kh1 c6 9.dxc6 Bg4 10.Qd3 Qxd3 11.Bxd3 Rgd8 12.Bc1 h3 13.f3 hxg2+ 14.Kxg2 Bh5 15.Bc4 Rac8 16.c7 Rd1 17.Kf2 Kg7 
  Black is clearly better: -+ (-2.06)  Depth: 26/44   00:01:05  670MN
1.a4 g5 2.hxg5 Nxg5 3.Ra3 Nxf3+ 4.Qxf3 Nf6 5.bxa5 bxa5 6.c5 dxc5 7.Rc3 h4 8.Kh1 c6 9.dxc6 Bg4 10.Qd3 Qxd3 11.Bxd3 Rgd8 12.Bc1 h3 13.f3 hxg2+ 14.Kxg2 Bh5 15.Bc4 Rac8 16.c7 Rd1 17.Kf2 Kg7 
  Black is clearly better: -+ (-2.15 --)  Depth: 27/50   00:01:13  752MN
1.a4 g5 2.hxg5 Nxg5 3.Ra3 Nxf3+ 4.Qxf3 Nf6 5.bxa5 bxa5 6.c5 dxc5 7.Rc3 h4 8.Kh1 c6 9.dxc6 Bg4 10.Qd3 Qxd3 11.Bxd3 Rgd8 12.Bc1 h3 13.f3 hxg2+ 14.Kxg2 Bh5 15.Bc4 Rac8 16.c7 Rd1 17.Kf2 Kg7 
  Black is clearly better: -+ (-2.24 --)  Depth: 27/50   00:01:27  908MN
1.Kf1 g5 2.hxg5 Nxg5 3.Nh2 Nf6 4.Ke1 h4 5.bxa5 bxa5 6.Rb3 h3 7.g3 a4 8.Rc3 Bd7 9.Rb1 Nf7 10.Qf1 fxg3 11.fxg3 Bxd2+ 12.Kxd2 Ng5 13.Qe2 Nfxe4+ 14.Bxe4 Nxe4+ 15.Qxe4 Qg5+ 16.Qe3 Qxe3+ 17.Rxe3 Rab8 
  Black is clearly better: -+ (-2.35)  Depth: 27/50   00:01:47  1124MN
1.Kf1 g5 2.hxg5 Nxg5 3.Nh2 Nf6 4.Ke1 h4 5.bxa5 bxa5 6.Rb3 h3 7.g3 a4 8.Rc3 Bd7 9.Rb1 Nf7 10.Qf1 fxg3 11.fxg3 Bxd2+ 12.Kxd2 Ng5 13.Qe2 Nfxe4+ 14.Bxe4 Nxe4+ 15.Qxe4 Qg5+ 16.Qe3 Qxe3+ 17.Rxe3 Rab8 
  Black is clearly better: -+ (-2.25 ++)  Depth: 28/43   00:01:48  1129MN
1.Kf1 g5 2.hxg5 Nxg5 3.Nh2 Nf6 4.Ke1 h4 5.bxa5 bxa5 6.Rb3 h3 7.g3 a4 8.Rc3 Bd7 9.Rb1 Nf7 10.Qf1 fxg3 11.fxg3 Bxd2+ 12.Kxd2 Ng5 13.Qe2 Nfxe4+ 14.Bxe4 Nxe4+ 15.Qxe4 Qg5+ 16.Qe3 Qxe3+ 17.Rxe3 Rab8 
  Black is clearly better: -+ (-2.16 ++)  Depth: 28/43   00:01:48  1129MN
1.Kf1 g5 2.hxg5 Nxg5 3.Nh2 Nf6 4.Ke1 h4 5.bxa5 bxa5 6.Rb3 h3 7.g3 a4 8.Rc3 Bd7 9.Rb1 Nf7 10.Qf1 fxg3 11.fxg3 Bxd2+ 12.Kxd2 Ng5 13.Qe2 Nfxe4+ 14.Bxe4 Nxe4+ 15.Qxe4 Qg5+ 16.Qe3 Qxe3+ 17.Rxe3 Rab8 
  Black is clearly better: -+ (-2.02 ++)  Depth: 28/43   00:01:48  1129MN
1.Kf1 g5 2.hxg5 Nxg5 3.Nh2 Nf6 4.Ke1 h4 5.bxa5 bxa5 6.Rb3 h3 7.g3 a4 8.Rc3 Bd7 9.Rb1 Nf7 10.Qf1 fxg3 11.fxg3 Bxd2+ 12.Kxd2 Ng5 13.Qe2 Nfxe4+ 14.Bxe4 Nxe4+ 15.Qxe4 Qg5+ 16.Qe3 Qxe3+ 17.Rxe3 Rab8 
  Black is clearly better: -+ (-1.82 ++)  Depth: 28/43   00:01:48  1129MN
1.Kf1 g5 2.hxg5 Nxg5 3.Nh4 Nf6 4.f3 Ngxe4 5.fxe4 Ng4 6.Nf3 Ne3+ 7.Bxe3 fxe3 8.bxa5 Bg4 9.Qe1 Qf6 10.Ke2 Rxa5 11.Bd1 h4 12.Kd3 h3 13.Rb2 hxg2 14.Rxg2 Bxf3 15.Rxg8+ Kxg8 16.Bxf3 Qxf3 17.Qh4 e2+ 18.Kc2 
  Black is clearly better: -+ (-1.86)  Depth: 28/43   00:01:48  1130MN
1.Kf1 g5 2.hxg5 Nxg5 3.Nh4 Nf6 4.f3 Ngxe4 5.fxe4 Ng4 6.Nf3 Ne3+ 7.Bxe3 fxe3 8.bxa5 Bg4 9.Qe1 Qf6 10.Ke2 Rxa5 11.Bd1 h4 12.Kd3 h3 13.Rb2 hxg2 14.Rxg2 Bxf3 15.Rxg8+ Kxg8 16.Bxf3 Qxf3 17.Qh4 e2+ 18.Kc2 
  Black is clearly better: -+ (-1.77 ++)  Depth: 29/39   00:01:48  1130MN
1.Kf1 g5 2.hxg5 Nxg5 3.Nh4 Nf6 4.f3 Ngxe4 5.fxe4 Ng4 6.Nf3 Ne3+ 7.Bxe3 fxe3 8.bxa5 Bg4 9.Qe1 Qf6 10.Ke2 Rxa5 11.Bd1 h4 12.Kd3 h3 13.Rb2 hxg2 14.Rxg2 Bxf3 15.Rxg8+ Kxg8 16.Bxf3 Qxf3 17.Qh4 e2+ 18.Kc2 
  Black is clearly better: -+ (-1.96 --)  Depth: 29/47   00:01:51  1165MN, tb=1

(,  25.03.2019)

Dann Corbit
Posts: 9994
Joined: Wed Mar 08, 2006 7:57 pm
Location: Redmond, WA USA
Contact:

Re: Revisiting g5 (Tough Tactical Test Position?)

Post by Dann Corbit » Mon Mar 25, 2019 8:14 pm

What is Thothfish?
Taking ideas is not a vice, it is a virtue. We have another word for this. It is called learning.
But sharing ideas is an even greater virtue. We have another word for this. It is called teaching.

zullil
Posts: 5607
Joined: Mon Jan 08, 2007 11:31 pm
Location: PA USA
Full name: Louis Zulli

Re: Revisiting g5 (Tough Tactical Test Position?)

Post by zullil » Mon Mar 25, 2019 8:20 pm

Dann Corbit wrote:
Mon Mar 25, 2019 8:14 pm
What is Thothfish?
viewtopic.php?f=2&t=70300

Dann Corbit
Posts: 9994
Joined: Wed Mar 08, 2006 7:57 pm
Location: Redmond, WA USA
Contact:

Re: Revisiting g5 (Tough Tactical Test Position?)

Post by Dann Corbit » Mon Mar 25, 2019 11:34 pm

It does not appear to me that Kf1 saves the day (position after Kf1):

Searching: 0 1

Code: Select all

infinite: 0 time: 0 increment: 0 moves to go: 0

 1   -0.21   00:00    1710  Nhf6
 2   -0.67   00:00   20811  Ba6 Kg1
 3   -0.57   00:00   40357  Ndf6 bxa5 bxa5
 4   -0.60   00:00   62655  g5 Nxg5 Bxg5 hxg5
 5   -0.48   00:00   90818  g5 Nxg5 Bxg5 hxg5
 6   -0.57   00:00  112102  Ndf6 bxa5 bxa5 Qe1 Bg4 Bxa5
 7   -0.68   00:00  131862  Ndf6 bxa5 bxa5 Qe1 Bg4 Bxa5 Bxf3
 8   -0.47   00:00  155174  g5 hxg5 Nxg5 bxa5 Nxf3 Qxf3 Rg4
 9   -0.40   00:00  183933  g5 hxg5 Nxg5 Nh4 Nf6 f3 Nf7 bxa5
10   -0.38   00:00  214133  g5 Nxg5 Bxg5 hxg5 Rxg5 bxa5 bxa5 Qf3 Nhf6
11   -0.46   00:00  240882  g5 hxg5 Nxg5 bxa5 bxa5 Nh4 Nf6 f3 Nf7 Qe1 Bg5 Nf5
12   -0.50   00:00  377243  g5 hxg5 Nxg5 bxa5 bxa5 Nh4 Nf6 f3 Nf7 Qe1 Rg3
13   -0.46   00:00  922452  g5 hxg5 Nxg5 Nh4 Nf6 bxa5 bxa5 f3 Nf7 Qf2 Bd7 Nc3 Bg5
14   -0.16   00:00   1266K  g5 hxg5 Nxg5 Nh4 Nf6 f3 Nf7 Be1 Bg5 Nf5 Bxf5 exf5 h4 bxa5 bxa5 Qf2
15   +0.00   00:00   3072K  g5 Nxg5 Bxg5 hxg5 Rxg5 Qd3 h4 Qc3 Nhf6 Qd3 Nh7
16   +0.15   00:00   3679K  g5 hxg5 Nxg5 Nh4 Nf6 f3 Nf7 Be1 Bg5 Nf5 h4 Nxh4 Ng4 Nf5 Bxf5 fxg4 Bd7 Qf3
17   -0.05   00:00   6164K  g5 hxg5 Nxg5 Nh4 Nf6 f3 Nf7 Qf2 Bg5 Be1 Nh6 Nf5 Nxf5 exf5 a4 Kg1 Bd7 Nc3 Kh7 Qe2
18   +0.32   00:00   7073K  g5 hxg5 Nxg5 Nh4 Nf6 f3 Nf7 Be1 Bg5 Qf2 Nh6 Nf5 Nxf5 exf5 a4 Bd3 h4 Nc3 Nh5 Qc2 h3
19   +0.54   00:01  10571K  g5 hxg5 Nxg5 Nh4 Nf6 f3 Nf7 bxa5 bxa5 Qf2 Bg5 Nf5 h4 Na7 Bxf5 exf5 Nh5 Nc6 Qc8 Kg1 h3
20   +0.51   00:01  19165K  g5 hxg5 Nxg5 Qe1 Nxf3 gxf3 Nf6 bxa5 Bh3+ Ke2 Bg2 axb6 cxb6 Bb4 Bxf3+ Kxf3 Qc8 Ke2 Qxc4+ Kd1 Qxb5 Bxd6 Qe8 Bc7 Qe7
21   +0.29   00:01  19599K  g5 hxg5 Nxg5 Qe1 Nf6 bxa5 Nxf3 gxf3 Bh3+ Ke2 Bg2 axb6 cxb6 Bb4 Bxf3+ Kxf3 Qc8 Ke2 Qxc4+ Kd1 Qxb5 Bxd6 Qe8 Rxb6 Rc8 a4 Rc4 Rb4 Rxb4 Bxb4 Qg6 Qh1
22   +0.34   00:02  26290K  g5 hxg5 Nxg5 Nh4 Nf6 f3 Nf7 Be1 Bg5 Qf2 Nh6 Bd1 Bd7 bxa5 Rxa5 Kg1 Nh7 Kf1 Ra8 a4 Nf6 Kg1 Bc8 a5 bxa5 c5 dxc5 Nc3 Nf7 Ba4 Bd7 Qxc5 Bxa4 Nxa4 Nd7 Qf2
23   +0.44   00:03  36415K  g5 hxg5 Nxg5 Nh4 Nf6 f3 Nf7 Be1 Bg5 Qf2 Nh6 Bd1 Bd7 bxa5 Rxa5 Kg1 Nh7 a4 Ra8 Kf1 Bf6 Bc2 Rg3 Nf5 Bxf5 exf5 Qd7 Qg1
24   +0.51   00:04  49381K  g5 hxg5 Nxg5 Nh4 Nf6 f3 Nf7 Be1 Bg5 Qf2 Nh6 Bd1 Bd7 bxa5 Rxa5 a4 Ra8 a5 Rxa5 Rxa5 bxa5 c5 dxc5 Na3 Nf7 Nc4 a4 Be2 Qf8 Qg1
25   +1.01   00:09  95521K  g5 hxg5 Nxg5 Nxg5 Rxg5 Qd3 Nf6 Bd1 Rg7 bxa5 bxa5 Bf3 Nd7 Qc2 Nc5 Bc3 h4 Ke2 Bd7 Rg1 a4 Rh1 Bg5
26   +0.70   00:12 126965K  g5 hxg5 Nxg5 Nxg5 Qxg5 f3 Ba6 Qf2 Rg7 bxa5 Rag8 Ke2 Qxg2 Rg1 Qxg1 Rxg1 Rxg1 Qh4 Nc5 Qf6+ Kh7 Qf5+ R8g6 Be1 bxa5 Bf2 Rg5 Qf7+ Rg7 Qf8 Nd7 Qa8 Bxb5 cxb5
27   +0.47   00:21 211803K  g5 hxg5 Nxg5 Nxg5 Qxg5 f3 h4 Qf2 Qd8 Ke2 Rg3 Rh1 axb4 Bxb4 Nc5 a4 Bg5 Kd2 Bf6 Kc1 Qe7 Rh2 Kh7 Kb2 Ba6 Qf1 Rb8 a5 Rgg8 Rh1 Qg7 axb6 Rxb6
28   +0.53   00:26 259651K  g5 hxg5 Nxg5 Nxg5 Qxg5 f3 Ba6 Qf2 Rac8 Bd3 axb4 axb4 Bxb5 cxb5 Nf6 Rc1 h4 Qg1 h3 g4 Nxg4 Qxg4 Qxg4 fxg4 Rxg4 Be2 Rg3 Kf2 Rg2+ Kf3 Rcg8
29   +0.60   00:38 372480K  g5 hxg5 Nxg5 Nxg5 Rxg5 f3 h4 Be1 Rh5 Qf2 Nf6 Ke2 h3 gxh3 Rxh3 Qg2 axb4 Rxb4 Nh5 Kd2 Bd7 Kc3 Rc8 Kb2 Qg5 Qe2 Ng3 Qd3 Qg7
30   +0.62   00:51 497326K  g5 hxg5 Nxg5 Nxg5 Rxg5 Qd3 Nf6 Bd1 axb4 Bf3 bxa3 Rxa3 Rxa3 Qxa3 Bg4 Qd3 Rg7 Ra1 Qe8 Ra7 Qg6 Rxc7 Rxc7 Nxc7 Bxf3 Qxf3 Nxe4 Be1 Nc5 Qh3 Nd3 Bc3 Kh7 Ne6 e4
31   +0.58   01:57   1125M  g5 hxg5 Nxg5 Nxg5 Qxg5 f3 Ba6 Qf2 h4 bxa5 Qh5 Ke2 h3 gxh3 Rg3 Rg1 Rag8 axb6 Nxb6 Bb3 Nd7 Bc2 Qg6 Rxg3 fxg3 Qa7 Bxd2 Kxd2 g2 Rg1 Qh5 Nxc7 Bxc4 Ne6 Qxf3 Qe3 Qxe3+ Kxe3 Rg3+ Kf2 Rc3 Bd1
32   +1.04   02:16   1308M  g5 hxg5 Nxg5 Nxg5 Rxg5 Qd3 Nf6 Bd1 axb4 axb4 Rxa1 Rxa1 Qg8 Ra8 Rxg2 Bf3 Rg3 Ke2 Rxf3 Qxf3 Bg4 Rxg8+ Kxg8 Nxc7 Nxe4 Be1 Nf6 Nb5 Bf8 Na7 e4 Qxg4+ hxg4 Nc8 f3+ Kf1 Nd7 b5 Kf7
33   +1.08   03:07   1809M  g5 hxg5 Nxg5 Nh4 Nf6 f3 Nf7 Qf2 Bg5 Nf5 h4 Ke2 Bxf5 exf5 Nh6 Kd1 Qc8 Bd3 Nxf5 Kc2 Ne3+ Kb3 Qd8 Qe2 axb4 axb4 Qe7 Ra7 Rxa7 Nxa7 Ra8 Nc6 Qf8 Rh1 Kg7 Bxe3
34   +1.19   04:07   2391M  g5 hxg5 Nxg5 Nxg5 Rxg5 Qd3 Nf6 Bd1 axb4 axb4 Rxa1 Rxa1 Qg8 Bf3 Bh3 Ke2 Rxg2 Rh1 Bg4 Kf1 Bxf3 Qxf3 Rg4 Ke2 Qg6 Nc3 Nh7 Qh3 f3+ Qxf3 Bxd2 Kxd2 Nf6 Qh3 Kg7 Re1 Rg2 Re2
35   +1.37   05:39   3281M  g5 hxg5 Nxg5 Nh4 Nf6 f3 Nf7 bxa5 bxa5 Be1 Bg5 Nf5 Bxf5 exf5 h4 Bf2 Nh5 f6 Qd7 Qe4 Nh6 c5 Nxf6 Qd3 e4 Qc3 exf3 c6 fxg2+ Kg1 Qg4 Bd1 f3 Bxf3 Qh3 Bxg2 Qxc3 Nxc3 Bd2 Bd4 h3 Bxf6+ Kh7
36   +1.75   16:00   9229M  g5 hxg5 Nxg5 Bc3 Nxf3 gxf3 h4 Ke1 axb4 Bxb4 h3 Kd2 Nb8 Rh1 Na6 Bc3 Rg2 Qf1 Kh7 a4 Nc5 Bb4 Bd7 Bxc5 dxc5 Ke2 Qf6 Rg1 Bxb5 axb5 Rxg1 Qxg1 Rxa1 Qxa1 h2 Qh1 Qh4 d6
37   +1.65   17:56  10331M  g5 hxg5 Nxg5 Nh4 Nf6 f3 Nf7 Be1 Bg5 Nf5 Bxf5 exf5 h4 bxa5 bxa5 Bf2 Nh5 f6 Nh6 Qd3 Qd7 Nc3 Bxf6 Ne4 Raf8 Nxf6 Nxf6 Bxh4 Nh5 Qe2 Ng3+ Bxg3 Rxg3 Rb7 Rfg8 Rab1 Qh3 Qxe5+ dxe5 gxh3 Rxf3+ Ke2 Rc3 Bd1
38   +1.49   24:15  13947M  g5 hxg5 Nxg5 Nh4 Nf6 f3 Nf7 Be1 Bg5 Qf2 Nh6 Bd1 Rg7 Nc3 Rh7 Qg1 Nfg4 Qh1 Ne3+ Ke2 Bd7 b5 Nxc4 Bb3 Ne3 a4 Rg7 Bf2 Qf6 Rg1 Rag8 Rac1 Rh7 Nd1 Bc8 Be1 Nhg4 Nxe3 Nxe3 Bf2 Ng4 Be1 Bd7 Rxc7 Ne3 Rc3
39   +1.65   30:01  17273M  g5 hxg5 Nxg5 Nh4 Nf6 f3 Nf7 Be1 Bg5 Nf5 Bxf5 exf5 h4 bxa5 bxa5 Bf2 Nh5 f6 Nh6 Qd3 Qd7 Nc3 Bxf6 Ne4 Raf8 Nxf6 Nxf6 Bxh4 Nh5 Qe2 Ng3+ Bxg3 Rxg3 Rb7 Rfg8 Rab1 Nf5 Bxf5 Qxf5 Rb8 Kh7 Qe4 Qxe4 fxe4 Rxb8 Rxb8 Rc3 Ra8 
40   +1.72   34:42  19961M  g5 hxg5 Nxg5 Nh4 Nf6 f3 Nf7 Be1 Bg5 Nf5 Bxf5 exf5 h4 bxa5 bxa5 Bf2 Nh5 f6 Nh6 Qd3 Qd7 Nc3 Bxf6 Ne4 Raf8 Nxf6 Nxf6 Bxh4 Nh5 Qe2 Ng3+ Bxg3 Rxg3 Rb7 Rfg8 Rab1 Nf5 Bxf5 Qxf5 Rb8 Kh7 Qe4 Qxe4 fxe4 Rxb8 Rxb8 Rc3 Ra8 
Taking ideas is not a vice, it is a virtue. We have another word for this. It is called learning.
But sharing ideas is an even greater virtue. We have another word for this. It is called teaching.

Dann Corbit
Posts: 9994
Joined: Wed Mar 08, 2006 7:57 pm
Location: Redmond, WA USA
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Re: Revisiting g5 (Tough Tactical Test Position?)

Post by Dann Corbit » Tue Mar 26, 2019 12:03 am

Last iteration:
acd 43; ce 189; acs 3600; acn 34086000; pv g5 Ke1 g4 Ng1 Ba6 g3 Bxb5 cxb5 f3 Qd1 Bxd2+ Qxd2 Qf6 Kf1 Ra7 Qc3 Qh6 Re1 Nhf6 Rad1 Rga8 Rd3 axb4 axb4 Nh7 Qb2 Ndf6 Bb1 Qg7 Rc3 Ne8 Qc1 Qd7 Bd3 Nhf6 Rc6 Qg7 Bb1 Ra4 Qb2 Qh6 Re3 Kg8 Re1 Kh7 Rc3 Qg7 Rec1 Qd7 ; bm g5;
Taking ideas is not a vice, it is a virtue. We have another word for this. It is called learning.
But sharing ideas is an even greater virtue. We have another word for this. It is called teaching.

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