Hi.
Now, the second game against Stockfish, taking the h7 pawn.
A win for me.
Stockfish deviated from the first game with 2... Kf8 (instead of 2... f6).
It allowed me to keep a protected passed pawn on h6, its king was tied to it; and I sent my king to the queenside.
After 16... a3, I also considered 17. ba3, which I think also wins.
But 17. b4 looks simpler to me: I will capture the a3 pawn anyway two moves later, and I keep a healthy candidate pawn (instead of double pawns, which will require further assistance from my king to produce a passed pawn).
[pgn]
[Event "banksia game"]
[Site "*"]
[Date "2023.01.21"]
[Round "*"]
[White "hm::Garcia Ruvalcaba, Jose de Jesus"]
[Black "Stockfish 15"]
[Result "1-0"]
[Time "13:10:58"]
[TimeControl "600+10"]
[SetUp "1"]
[FEN "4k3/ppppppp1/8/8/8/8/PPPPPPPP/4K3 w - - 0 1"]
[Termination "mate"]
1. h4 e6 {+4.09/27 83696 39653706} 2. g4 Kf8 {+4.26/25 88771 43637459} 3. f3 f6
{+4.22/24 47887 25566492} 4. Kf2 Kf7 {+4.65/27 75090 44071295} 5. Kg3 Kg6
{+4.66/24 101818 52230626} 6. h5+ Kg5 {+4.77/23 67718 33524947} 7. f4+ Kh6
{+4.71/20 10 2667830} 8. Kh4 f5 {+5.25/26 107055 56688227} 9. g5+ Kh7 {+5.55/25
10 4824506} 10. Kg3 g6 {+5.18/23 53541 29719329} 11. h6 d6 {+6.74/22 59505
35848776} 12. Kf3 a5 {+6.78/19 2817 3361817} 13. Ke3 Kg8 {+8.10/23 25646
20548468} 14. Kd3 a4 {+7.95/19 8594 6357802} 15. Kc3 e5 {+8.09/21 6396 4933536}
16. e3 a3 {+8.87/21 6140 7719234} 17. b4 Kf7 {+9.23/19 10586 9362319} 18. Kb3
Kf8 {+9.68/19 9235 10461211} 19. Kxa3 Kf7 {+10.04/20 10137 10593239} 20. Kb3 c6
{+10.30/19 9069 9227499} 21. a4 Ke7 {+11.75/19 10508 10941795} 22. h7 Ke6
{+14.99/21 20593 19666713} 23. h8=Q c5 {M-7/26 12120 14194696} 24. Qg8+ Kd7
{M-11/27 10423 11330322} 25. Qxg6 Kc6 {M-8/28 9134 9056127} 26. Qe6 c4+ {M-7/27
2556 2613456} 27. Kxc4 b5+ {M-6/43 1983 4703661} 28. axb5+ Kc7 {M-5/145 1254
12852490} 29. g6 d5+ {M-4/245 377 1003147} 30. Kxd5 exf4 {M-4/245 1602 4652575}
31. exf4 Kb7 {M-4/245 1541 5033933} 32. g7 Kc7 {M-3/245 42 55879} 33. g8=Q Kb7
{M-2/245 45 11496} 34. Qgc8+ Ka7 {M-1/245 34 494} 35. Qea6# 1-0
[/pgn]
This was the last game from the second round.
I will post a summary of the challenge until now, before proceeding with the third round.
Greetings.
Pawn endinge challenge: human vs engines.
Moderator: Ras
-
pepechuy
- Posts: 226
- Joined: Fri Oct 22, 2021 4:22 am
- Full name: José García Ruvalcaba
-
pepechuy
- Posts: 226
- Joined: Fri Oct 22, 2021 4:22 am
- Full name: José García Ruvalcaba
Re: Pawn endinge challenge: human vs engines.
Hi.
In the second round of the challenge, I played nine games:
2 losses (¡ouch!);
0 draws;
7 wins.
Stockfish, e7 pawn: win.
Komodo, h7 pawn: win.
Lc0, a7 pawn: loss.
Stockfish, g7 pawn: win.
Komodo, b7 pawn: loss.
Berserk, e7 pawn: win.
Komodo, g7 pawn: win.
Stockfish, a7 pawn: win.
Stockfish, h7 pawn: win.
I feel that I played worse in the second round, since in the first round I played 40 games with 0 losses.
After two rounds, I have played 49 games, and dropped 6.5 points.
Points dropped against:
Berserk: 0.5 (9 games)
Crafty: 0.0 (8 games)
Komodo: 2.5 (11 games)
Lc0: 1.5 (9 games)
Stockfish: 2.0 (12 games)
Points dropped taking the:
a7 pawn: 2.0 (7 games)
b7 pawn: 1.5 (6 games)
c7 pawn: 0.0 (5 games)
d7 pawn: 0.0 (5 games)
e7 pawn: 1.0 (7 games)
f7 pawn: 0.0 (5 games)
g7 pawn: 1.0 (7 games)
h7 pawn: 1.0 (7 games)
Grouping them:
rook pawns: 3.0 (14 games)
knight pawns: 2.5 (13 games)
bishop pawns: 0.0 (10 games)
central pawns: 1.0 (12 games)
Third round to begin soon.
The next game is against Lc0, taking the a7 pawn.
Greetings.
In the second round of the challenge, I played nine games:
2 losses (¡ouch!);
0 draws;
7 wins.
Stockfish, e7 pawn: win.
Komodo, h7 pawn: win.
Lc0, a7 pawn: loss.
Stockfish, g7 pawn: win.
Komodo, b7 pawn: loss.
Berserk, e7 pawn: win.
Komodo, g7 pawn: win.
Stockfish, a7 pawn: win.
Stockfish, h7 pawn: win.
I feel that I played worse in the second round, since in the first round I played 40 games with 0 losses.
After two rounds, I have played 49 games, and dropped 6.5 points.
Points dropped against:
Berserk: 0.5 (9 games)
Crafty: 0.0 (8 games)
Komodo: 2.5 (11 games)
Lc0: 1.5 (9 games)
Stockfish: 2.0 (12 games)
Points dropped taking the:
a7 pawn: 2.0 (7 games)
b7 pawn: 1.5 (6 games)
c7 pawn: 0.0 (5 games)
d7 pawn: 0.0 (5 games)
e7 pawn: 1.0 (7 games)
f7 pawn: 0.0 (5 games)
g7 pawn: 1.0 (7 games)
h7 pawn: 1.0 (7 games)
Grouping them:
rook pawns: 3.0 (14 games)
knight pawns: 2.5 (13 games)
bishop pawns: 0.0 (10 games)
central pawns: 1.0 (12 games)
Third round to begin soon.
The next game is against Lc0, taking the a7 pawn.
Greetings.
-
pepechuy
- Posts: 226
- Joined: Fri Oct 22, 2021 4:22 am
- Full name: José García Ruvalcaba
Re: Pawn endinge challenge: human vs engines.
Hi.
Now, the third game against Lc0, taking the a7 pawn.
A win for me.
I deviated from the previous two games with 4. b4
In the first game (draw), I played 4. d3
In the second game (loss) I played 4. d4
Now that I look at it, I do not understand why I did not play 4. b4 before, it is just a good move.
With 5... dc4, Lc0 gave me a healthy pawn majority in the queenside, I just had to go and find a way for my king into the other flank.
11. f4 did the trick for me. Lc0 advanced 11... g4 and let my king enter the h-file. But otherwise, I would have captured with fg5 and then played h4; my king would find its path anyway.
[pgn]
[Event "banksia game"]
[Site "*"]
[Date "2023.01.25"]
[Round "*"]
[White "hm::Garcia Ruvalcaba, Jose de Jesus"]
[Black "Lc0 v0.27.0"]
[Result "1-0"]
[BlackElo "3500"]
[Time "15:42:55"]
[TimeControl "600+10"]
[SetUp "1"]
[FEN "4k3/1ppppppp/8/8/8/8/PPPPPPPP/4K3 w - - 0 1"]
[Termination "mate"]
1. a4 c5 {+4.50/5 68334 4866} 2. b3 d5 {+4.35/5 38524 2974} 3. c3 Kd7 {+3.72/5
15930 1395} 4. b4 Kc6 {+4.66/5 33420 2810} 5. d4 cxb4 {+4.53/6 24785 2817} 6.
cxb4 Kb6 {+5.05/5 16822 2795} 7. Kd2 Ka6 {+6.01/5 27865 3156} 8. Ke3 g5 {+8.60/5
30245 2827} 9. Kf3 f5 {+8.96/6 18736 1724} 10. Kg3 h6 {+12.93/6 30189 3135} 11.
f4 g4 {+19.76/7 6178 2168} 12. Kh4 b5 {+15.40/6 19583 2430} 13. a5 Kb7 {+23.96/1
24 4198} 14. Kh5 g3 {+29.48/6 45047 9720} 15. h4 Kc6 {+37.34/6 23040 8164} 16.
Kxh6 Kd6 {+46.23/6 43387 9163} 17. Kg7 Kc6 {+56.54/5 21047 4574} 18. h5 Kd6
{+41.55/5 18852 5323} 19. h6 Kc6 {+90.77/5 27167 4723} 20. h7 Kd6 {+51.87/5
17092 3231} 21. h8=Q Kd7 {+37.03/5 19004 2065} 22. Kf7 e5 {+77.88/5 14890 1346}
23. fxe5 Kc7 {+107.39/4 565 128} 24. Ke7 f4 {+58.37/5 4689 435} 25. Qd8+ Kb7
{M-3/1 22 37} 26. Qb6+ Ka8 {M-2/1 16 9} 27. Kd6 f3 {M-2/1 25 66} 28. Kc6 fxe2
{M-1/1 16 41} 29. Qb7# 1-0
[/pgn]
Next game is against Komodo, taking the b7 pawn.
Greetings.
Now, the third game against Lc0, taking the a7 pawn.
A win for me.
I deviated from the previous two games with 4. b4
In the first game (draw), I played 4. d3
In the second game (loss) I played 4. d4
Now that I look at it, I do not understand why I did not play 4. b4 before, it is just a good move.
With 5... dc4, Lc0 gave me a healthy pawn majority in the queenside, I just had to go and find a way for my king into the other flank.
11. f4 did the trick for me. Lc0 advanced 11... g4 and let my king enter the h-file. But otherwise, I would have captured with fg5 and then played h4; my king would find its path anyway.
[pgn]
[Event "banksia game"]
[Site "*"]
[Date "2023.01.25"]
[Round "*"]
[White "hm::Garcia Ruvalcaba, Jose de Jesus"]
[Black "Lc0 v0.27.0"]
[Result "1-0"]
[BlackElo "3500"]
[Time "15:42:55"]
[TimeControl "600+10"]
[SetUp "1"]
[FEN "4k3/1ppppppp/8/8/8/8/PPPPPPPP/4K3 w - - 0 1"]
[Termination "mate"]
1. a4 c5 {+4.50/5 68334 4866} 2. b3 d5 {+4.35/5 38524 2974} 3. c3 Kd7 {+3.72/5
15930 1395} 4. b4 Kc6 {+4.66/5 33420 2810} 5. d4 cxb4 {+4.53/6 24785 2817} 6.
cxb4 Kb6 {+5.05/5 16822 2795} 7. Kd2 Ka6 {+6.01/5 27865 3156} 8. Ke3 g5 {+8.60/5
30245 2827} 9. Kf3 f5 {+8.96/6 18736 1724} 10. Kg3 h6 {+12.93/6 30189 3135} 11.
f4 g4 {+19.76/7 6178 2168} 12. Kh4 b5 {+15.40/6 19583 2430} 13. a5 Kb7 {+23.96/1
24 4198} 14. Kh5 g3 {+29.48/6 45047 9720} 15. h4 Kc6 {+37.34/6 23040 8164} 16.
Kxh6 Kd6 {+46.23/6 43387 9163} 17. Kg7 Kc6 {+56.54/5 21047 4574} 18. h5 Kd6
{+41.55/5 18852 5323} 19. h6 Kc6 {+90.77/5 27167 4723} 20. h7 Kd6 {+51.87/5
17092 3231} 21. h8=Q Kd7 {+37.03/5 19004 2065} 22. Kf7 e5 {+77.88/5 14890 1346}
23. fxe5 Kc7 {+107.39/4 565 128} 24. Ke7 f4 {+58.37/5 4689 435} 25. Qd8+ Kb7
{M-3/1 22 37} 26. Qb6+ Ka8 {M-2/1 16 9} 27. Kd6 f3 {M-2/1 25 66} 28. Kc6 fxe2
{M-1/1 16 41} 29. Qb7# 1-0
[/pgn]
Next game is against Komodo, taking the b7 pawn.
Greetings.
-
pepechuy
- Posts: 226
- Joined: Fri Oct 22, 2021 4:22 am
- Full name: José García Ruvalcaba
Re: Pawn endinge challenge: human vs engines.
Hi.
Now, the third game against Komodo, removing the b7 pawn.
A win for me.
¡This is the last game of the challenge!
I deviated from the previous two games with 2. c3 (instead of 2. c4)
This time, it was not the classical invasion of my king into the flank opposite to my pawn majority.
It was more a game of letting Komodo run out of waiting moves.
After 12. b5, I knew I had as many reserve tempi as I wanted, but Komodo did not.
[pgn]
[Event "banksia game"]
[Site "*"]
[Date "2023.01.26"]
[Round "*"]
[White "hm::Garcia Ruvalcaba, Jose de Jesus"]
[Black "Komodo 13.02 64-bit"]
[Result "1-0"]
[BlackElo "3500"]
[Time "15:05:59"]
[TimeControl "600+10"]
[SetUp "1"]
[FEN "4k3/p1pppppp/8/8/8/8/PPPPPPPP/4K3 w - - 0 1"]
[Termination "mate"]
1. b4 e6 {+2.18/22 19278 21397888} 2. c3 d5 {+2.12/23 26853 24198934} 3. d3 Kd7
{+2.18/23 36409 36820589} 4. Kd2 h5 {+2.14/24 30097 32985029} 5. c4 dxc4
{+2.28/24 60326 59572220} 6. dxc4 Kc6 {+2.47/24 39275 57028662} 7. Kc3 Kd6
{+2.49/23 33754 40402980} 8. Kd4 c6 {+3.71/26 161755 183718685} 9. c5+ Ke7
{+4.25/25 39092 55876330} 10. Kc4 g5 {+3.45/24 42494 48971050} 11. a4 Kd8
{+4.33/24 20834 26077330} 12. b5 Kc7 {+4.50/25 21049 34209256} 13. Kb4 Kb7
{+4.49/24 30137 35391166} 14. Ka5 g4 {+8.70/27 54591 66703213} 15. Kb4 e5
{+5.98/24 23451 32393540} 16. Kc4 Kc7 {+5.97/24 26567 30847171} 17. Kd3 f5
{+8.19/25 12667 16268112} 18. g3 Kc8 {+8.83/27 26088 52699420} 19. Kc4 Kb7
{+9.70/26 26421 34897665} 20. Kb4 Kc7 {+11.42/26 16679 35331960} 21. Ka5 Kb7
{+12.45/27 3252 14521895} 22. e3 e4 {+11.81/26 7873 15234643} 23. Kb4 Kc7
{+12.89/26 17315 32151406} 24. Kc4 Kd7 {+15.86/28 51490 69621991} 25. Kd4 cxb5
{+15.25/26 11658 17897461} 26. axb5 Ke6 {+15.86/24 10 3556543} 27. Kc4 Ke5
{+16.04/25 2160 13956100} 28. Kb4 Ke6 {+19.22/25 10 75584145} 29. Ka5 h4
{+18.83/24 36775 60452985} 30. Ka6 hxg3 {+18.36/23 11071 17963250} 31. hxg3 Kd5
{+19.22/23 10 3710101} 32. c6 Kd6 {+241.82/20 10 3716243} 33. Kb7 Kc5 {M-19/24
10 12464084} 34. c7 Kxb5 {M-19/20 267 3330642} 35. c8=Q Kb4 {M-14/21 10 3941510}
36. Kxa7 Kb3 {M-11/25 10 7793717} 37. Kb6 Kb2 {M-11/20 1402 1951512} 38. Kb5 Kb3
{M-5/36 1227 2051406} 39. Qc4+ Kb2 {M-4/99 10 892083} 40. Kb4 f4 {M-3/99 10
10350} 41. Qe2+ Ka1 {M-2/99 34 7971} 42. Kc3 fxg3 {M-1/99 35 689} 43. Qb2# 1-0
[/pgn]
A brief summary.
In the third round, I played two games, and won both; against:
Lc0, taking the a7 pawn.
Komodo, taking the b7 pawn.
In total, I played 51 games and dropped 6.5 points.
Points dropped against:
Berserk: 0.5 (9 games)
Crafty: 0.0 (8 games)
Komodo: 2.5 (12 games)
Lc0: 1.5 (10 games)
Stockfish: 2.0 (12 games)
Points dropped taking the:
a7 pawn: 2.0 (8 games)
b7 pawn: 1.5 (7 games)
c7 pawn: 0.0 (5 games)
d7 pawn: 0.0 (5 games)
e7 pawn: 1.0 (7 games)
f7 pawn: 0.0 (5 games)
g7 pawn: 1.0 (7 games)
h7 pawn: 1.0 (7 games)
Grouping them:
rook pawns: 3.0 (15 games)
knight pawns: 2.5 (14 games)
bishop pawns: 0.0 (10 games)
central pawns: 1.0 (12 games)
I will take a break before the next challenge.
I still do not decide which one to play; but the main options are a Queen vs Rook odds challenge (remove one of my rooks, remove the engine's Queen), and a Chess960 challenge against weakened engines.
Greetings.
Now, the third game against Komodo, removing the b7 pawn.
A win for me.
¡This is the last game of the challenge!
I deviated from the previous two games with 2. c3 (instead of 2. c4)
This time, it was not the classical invasion of my king into the flank opposite to my pawn majority.
It was more a game of letting Komodo run out of waiting moves.
After 12. b5, I knew I had as many reserve tempi as I wanted, but Komodo did not.
[pgn]
[Event "banksia game"]
[Site "*"]
[Date "2023.01.26"]
[Round "*"]
[White "hm::Garcia Ruvalcaba, Jose de Jesus"]
[Black "Komodo 13.02 64-bit"]
[Result "1-0"]
[BlackElo "3500"]
[Time "15:05:59"]
[TimeControl "600+10"]
[SetUp "1"]
[FEN "4k3/p1pppppp/8/8/8/8/PPPPPPPP/4K3 w - - 0 1"]
[Termination "mate"]
1. b4 e6 {+2.18/22 19278 21397888} 2. c3 d5 {+2.12/23 26853 24198934} 3. d3 Kd7
{+2.18/23 36409 36820589} 4. Kd2 h5 {+2.14/24 30097 32985029} 5. c4 dxc4
{+2.28/24 60326 59572220} 6. dxc4 Kc6 {+2.47/24 39275 57028662} 7. Kc3 Kd6
{+2.49/23 33754 40402980} 8. Kd4 c6 {+3.71/26 161755 183718685} 9. c5+ Ke7
{+4.25/25 39092 55876330} 10. Kc4 g5 {+3.45/24 42494 48971050} 11. a4 Kd8
{+4.33/24 20834 26077330} 12. b5 Kc7 {+4.50/25 21049 34209256} 13. Kb4 Kb7
{+4.49/24 30137 35391166} 14. Ka5 g4 {+8.70/27 54591 66703213} 15. Kb4 e5
{+5.98/24 23451 32393540} 16. Kc4 Kc7 {+5.97/24 26567 30847171} 17. Kd3 f5
{+8.19/25 12667 16268112} 18. g3 Kc8 {+8.83/27 26088 52699420} 19. Kc4 Kb7
{+9.70/26 26421 34897665} 20. Kb4 Kc7 {+11.42/26 16679 35331960} 21. Ka5 Kb7
{+12.45/27 3252 14521895} 22. e3 e4 {+11.81/26 7873 15234643} 23. Kb4 Kc7
{+12.89/26 17315 32151406} 24. Kc4 Kd7 {+15.86/28 51490 69621991} 25. Kd4 cxb5
{+15.25/26 11658 17897461} 26. axb5 Ke6 {+15.86/24 10 3556543} 27. Kc4 Ke5
{+16.04/25 2160 13956100} 28. Kb4 Ke6 {+19.22/25 10 75584145} 29. Ka5 h4
{+18.83/24 36775 60452985} 30. Ka6 hxg3 {+18.36/23 11071 17963250} 31. hxg3 Kd5
{+19.22/23 10 3710101} 32. c6 Kd6 {+241.82/20 10 3716243} 33. Kb7 Kc5 {M-19/24
10 12464084} 34. c7 Kxb5 {M-19/20 267 3330642} 35. c8=Q Kb4 {M-14/21 10 3941510}
36. Kxa7 Kb3 {M-11/25 10 7793717} 37. Kb6 Kb2 {M-11/20 1402 1951512} 38. Kb5 Kb3
{M-5/36 1227 2051406} 39. Qc4+ Kb2 {M-4/99 10 892083} 40. Kb4 f4 {M-3/99 10
10350} 41. Qe2+ Ka1 {M-2/99 34 7971} 42. Kc3 fxg3 {M-1/99 35 689} 43. Qb2# 1-0
[/pgn]
A brief summary.
In the third round, I played two games, and won both; against:
Lc0, taking the a7 pawn.
Komodo, taking the b7 pawn.
In total, I played 51 games and dropped 6.5 points.
Points dropped against:
Berserk: 0.5 (9 games)
Crafty: 0.0 (8 games)
Komodo: 2.5 (12 games)
Lc0: 1.5 (10 games)
Stockfish: 2.0 (12 games)
Points dropped taking the:
a7 pawn: 2.0 (8 games)
b7 pawn: 1.5 (7 games)
c7 pawn: 0.0 (5 games)
d7 pawn: 0.0 (5 games)
e7 pawn: 1.0 (7 games)
f7 pawn: 0.0 (5 games)
g7 pawn: 1.0 (7 games)
h7 pawn: 1.0 (7 games)
Grouping them:
rook pawns: 3.0 (15 games)
knight pawns: 2.5 (14 games)
bishop pawns: 0.0 (10 games)
central pawns: 1.0 (12 games)
I will take a break before the next challenge.
I still do not decide which one to play; but the main options are a Queen vs Rook odds challenge (remove one of my rooks, remove the engine's Queen), and a Chess960 challenge against weakened engines.
Greetings.