lech wrote:
Lesson 2:
It is possible to get this possition on a very high ply. It needs 20 additional depths to verify that it is a wrong choise.
[d] 8/8/4k3/8/3PK3/7p/7P/8 w - - 0 1
I added 3 plies.
Would you like to test your liked engine: in how many depths (or how much time) is able to find the best move 1...Re6 with draw (0,00) pawn endgame?
[d]8/5k2/7r/8/3P4/4R2p/4K2P/8 b - - 0 1
I'm sure you can find positions that computers do not handle well. What is the point of all of this? I do not dispute that. I've been doing this for several decades now and I know more about the weaknesses of programs than you do. You are not imparting any special insight here.
Anyway, here is the analysis by our current development version of Komodo, it takes longer than before as expected.
30 -0.10 39.1M 0:28.96 Re6 Kf3 Rxe3+ Kxe3 Ke6 Ke4 Kd6 d5 Kd7 Ke5 Ke7 d6+ Kd8 Kd4 Kc8 Ke4 Kd7 Kd5 Kd8 Kc6 Kc8 Kb6 Kd7 Kc5 Kd8 Kb4 Kd7 Kc3 Kd8 Kd3 Kd7 Ke4 Kxd6 Kd4 Ke6 Ke4 Kd6
30 -0.10 37.1M 0:27.07 Re6 Kf3 Rxe3+ Kxe3 Ke6 Ke4 Kd6 d5 Kd7 Ke5 Ke7 d6+ Kd8 Kd4 Kc8 Ke4 Kd7 Kd5 Kd8 Kc6 Kc8 Kb6 Kd7 Kc5 Kd8 Kb4 Kd7 Kc3 Kd8 Kd3 Kd7 Ke4 Kxd6 Kd4 Ke6 Ke4 Kd6
29 -0.10 27.1M 0:21.07 Re6 Kf3 Rxe3+ Kxe3 Ke6 Ke4 Kd6 d5 Kd7 Ke5 Ke7 d6+ Kd8 Kd4 Kc8 Ke4 Kd7 Kd5 Kd8 Kc6 Kc8 Kb5 Kd7 Kc5 Kd8 Kc6
29 -0.10 26.2M 0:20.30 Re6 Kf3 Rxe3+ Kxe3 Ke6 Ke4 Kd6 d5 Kd7 Ke5 Ke7 d6+ Kd8 Kd4 Kc8 Ke4 Kd7 Kd5 Kd8 Kc6 Kc8 Kb5 Kd7 Kc5 Kd8 Kc6
28 -0.10 19.8M 0:16.44 Re6 Kf3 Rxe3+ Kxe3 Ke6 Ke4 Kd6 d5 Kd7 Ke5 Ke7 d6+ Kd8 Kd5 Kd7 Kc5 Kd8 Kd4 Kd7 Kd5 Kd8 Ke5 Kd7 Kd5
28 -0.10 18.5M 0:15.19 Re6 Kf3 Rxe3+ Kxe3 Ke6 Ke4 Kd6 d5 Kd7 Ke5 Ke7 d6+ Kd8 Kd5 Kd7 Kc5 Kd8 Kd4 Kd7 Kd5 Kd8 Ke5 Kd7 Kd5
27 -0.10 15.5M 0:13.34 Re6 Kf3 Rxe3+ Kxe3 Ke6 Ke4 Kd6 d5 Kd7 Ke5 Ke7 d6+ Kd8 Kd5 Kd7 Kc5 Kd8 Kd4 Kd7 Kd5 Kd8 Kd4
27 -0.10 15.1M 0:13.02 Re6 Kf3 Rxe3+ Kxe3 Ke6 Ke4 Kd6 d5 Kd7 Ke5 Ke7 d6+ Kd8 Kd5 Kd7 Kc5 Kd8 Kd4 Kd7 Kd5 Kd8 Kd4
26 -0.10 13.1M 0:11.86 Re6 Kf3 Rxe3+ Kxe3 Ke6 Ke4 Kd6 d5 Kd7 Ke5 Ke7 d6+ Kd8 Kd5 Kd7 Kc5 Kd8 Kd4 Kc8 Ke4 Kd8 Ke5 Kd7 Kd5 Kd8 Ke5
26 -0.10 13.0M 0:11.73 Re6 Kf3 Rxe3+ Kxe3 Ke6 Ke4 Kd6 d5 Kd7 Ke5 Ke7 d6+ Kd8 Kd5 Kd7 Kc5 Kd8 Kd4 Kc8 Ke4 Kd8 Ke5 Kd7 Kd5 Kd8 Ke5
25 -0.10 12.0M 0:11.11 Re6 Kf3 Rxe3+ Kxe3 Ke6 Ke4 Kd6 d5 Kd7 Ke5 Ke7 d6+ Kd8 Kd5 Kd7 Kc5 Kd8 Kd4 Kd7 Kd5 Kd8 Kc5 Kd7 Kd5
25 -0.10 11.8M 0:10.99 Re6 Kf3 Rxe3+ Kxe3 Ke6 Ke4 Kd6 d5 Kd7 Ke5 Ke7 d6+ Kd8 Kd5 Kd7 Kc5 Kd8 Kd4 Kd7 Kd5 Kd8 Kc5 Kd7 Kd5
24 -0.10 11.3M 0:10.67 Re6 Kf3 Rxe3+ Kxe3 Ke6 Ke4 Kd6 d5 Kd7 Ke5 Ke7 d6+ Kd8 Kd5 Kd7 Kc5 Kd8 Kd4 Ke8 Ke4 Kd8 Ke5 Kd7 Kd5 Kd8 Ke5
24 -0.10 11.1M 0:10.46 Re6 Kf3 Rxe3+ Kxe3 Ke6 Ke4 Kd6 d5 Kd7 Ke5 Ke7 d6+ Kd8 Kd5 Kd7 Kc5 Kd8 Kd4 Ke8 Ke4 Kd8 Ke5 Kd7 Kd5 Kd8 Ke5
23 -0.10 10.8M 0:10.27 Re6 Kf3 Rxe3+ Kxe3 Ke6 Ke4 Kd6 d5 Kd7 Ke5 Ke7 d6+ Kd8 Kd5 Kd7 Kc5 Kd8 Kd4 Kd7 Kd5 Kd8 Kd4
23 -0.10 10.7M 0:10.20 Re6 Kf3 Rxe3+ Kxe3 Ke6 Ke4 Kd6 d5 Kd7 Ke5 Ke7 d6+ Kd8 Kd5 Kd7 Kc5 Kd8 Kd4 Kd7 Kd5 Kd8 Kd4
22 -0.10 10.5M 0:10.04 Re6 Kf3 Rxe3+ Kxe3 Ke6 Ke4 Kd6 d5 Kd7 Ke5 Ke7 d6+ Kd8 Kd5 Kd7 Kc5 Kd8 Kd4 Kd7 Kd5 Kd8 Kd4
22 -0.10 10.4M 0:09.99 Re6 Kf3 Rxe3+ Kxe3 Ke6 Ke4 Kd6 d5 Kd7 Ke5 Ke7 d6+ Kd8 Kd5 Kd7 Kc5 Kd8 Kd4 Kd7 Kd5 Kd8 Kd4
22 -0.54 10.1M 0:09.80 Re6
22 -0.69 9.7M 0:09.40 Kf6 Kf3 Rh4 Re4 Rh8 Re5 Rh4 Ke3 Rh7 Ke4 Rh4+ Kd3 Rh7 Ra5 Rh8 Ke4 Rh4+ Ke3 Rh8 Kd3 Rb8 Ra2 Kf5 Rf2+ Ke6 Ke4
21 -0.70 2.6M 0:02.44 Kf6 Kd2 Rh8 Kd3 Kf7 Kc4 Rc8+ Kb5 Rd8 Rf3+ Ke6 Kc4 Rc8+ Kd3 Rh8 Ke4 Rh4+ Ke3 Rh7 Rg3 Rh4 Rg7 Kf6 Rc7 Rh8 Ke4 Re8+ Kf4 Re2 Rc6+ Ke7
21 -0.70 2.3M 0:02.15 Kf6 Kd2 Rh8 Kd3 Kf7 Kc4 Rc8+ Kb5 Rd8 Rf3+ Ke6 Kc4 Rc8+ Kd3 Rh8 Ke4 Rh4+ Ke3 Rh7 Rg3 Rh4 Rg7 Kf6 Rc7 Rh8 Ke4 Re8+ Kf4 Re2 Rc6+ Ke7
20 -0.70 1.8M 0:01.73 Kf6 Kd2 Rh8 Kd3 Kf7 Kc4 Rc8+ Kb5 Rd8 Rf3+ Ke6 Kc4 Rc8+ Kd3 Rh8 Ke4 Rh4+ Ke3 Rh7 Rg3 Kf5 Kd3 Ke6 Ke4 Rh4+ Ke3 Rh8 Rg7 Rb8
20 -0.70 1.7M 0:01.62 Kf6 Kd2 Rh8 Kd3 Kf7 Kc4 Rc8+ Kb5 Rd8 Rf3+ Ke6 Kc4 Rc8+ Kd3 Rh8 Ke4 Rh4+ Ke3 Rh7 Rg3 Kf5 Kd3 Ke6 Ke4 Rh4+ Ke3 Rh8 Rg7 Rb8
19 -0.70 1.3M 0:01.25 Kf6 Kd2 Rh8 Kd3 Kf7 Kc4 Rc8+ Kd5 Rd8+ Kc5 Rc8+ Kb5 Rd8 Rf3+ Ke6 Kc4 Rc8+ Kd3 Rh8 Ke4 Rh4+ Ke3 Rh8 Rf2 Re8 Kd3 Rh8
19 -0.70 1.2M 0:01.20 Kf6 Kd2 Rh8 Kd3 Kf7 Kc4 Rc8+ Kd5 Rd8+ Kc5 Rc8+ Kb5 Rd8 Rf3+ Ke6 Kc4 Rc8+ Kd3 Rh8 Ke4 Rh4+ Ke3 Rh8 Rf2 Re8 Kd3 Rh8
18 -0.70 1.1M 0:01.05 Kf6 Kd2 Rh8 Kd3 Kf7 Kc4 Rc8+ Kd5 Rd8+ Kc5 Rc8+ Kb5 Rd8 Rf3+ Ke6 Kc4 Rc8+ Kd3 Rh8 Ke4 Rh4+ Ke3 Rh5 Rf4 Rb5 Ke4 Rb2 d5+ Ke7
18 -0.70 1.1M 0:01.02 Kf6 Kd2 Rh8 Kd3 Kf7 Kc4 Rc8+ Kd5 Rd8+ Kc5 Rc8+ Kb5 Rd8 Rf3+ Ke6 Kc4 Rc8+ Kd3 Rh8 Ke4 Rh4+ Ke3 Rh5 Rf4 Rb5 Ke4 Rb2 d5+ Ke7
18 -0.86 803927 0:00.77 Rh4 Kd3
17 -0.70 555798 0:00.54 Rh4 Kd3 Rh8 Re5 Ra8 Re2 Kf6 Rf2+ Ke6 Ke4 Re8 Rf5 Kd6+ Re5 Rh8 Rd5+ Ke6 Rb5 Rh4+ Kd3 Rh7 Rb8 Ra7 Ke4
17 -0.70 533594 0:00.52 Rh4 Kd3 Rh8 Re5 Ra8 Re2 Kf6 Rf2+ Ke6 Ke4 Re8 Rf5 Kd6+ Re5 Rh8 Rd5+ Ke6 Rb5 Rh4+ Kd3 Rh7 Rb8 Ra7 Ke4
17 -0.72 247469 0:00.24 Kf6 Kd2 Rh8 Kd3 Kf7 Kc4 Rc8+ Kd5 Rd8+ Kc5 Rc8+ Kb5 Rd8 Rf3+ Ke6 Kc4 Rc8+ Kd3 Rh8 Ke3 Kd6 Rf6+ Kd5 Rf5+ Kd6 Ke4
16 -0.70 139417 0:00.13 Kf6 Kd2 Rh8 Kd3 Kf7 d5 Rh4 Kc3 Ra4 Re2 Kf6 d6 Ra6 Rd2 Ra8 Kb4 Ke6 d7 Rd8
16 -0.70 122906 0:00.12 Kf6 Kd2 Rh8 Kd3 Kf7 d5 Rh4 Kc3 Ra4 Re2 Kf6 d6 Ra6 Rd2 Ra8 Kb4 Ke6 d7 Rd8
15 -0.72 85112 0:00.08 Kf6 Kd2 Rh8 Kd3 Kf7 d5 Rh4 Kc3 Ra4 Re2 Kf6 d6 Ra6 Rd2 Ra8 Kb4 Ke6
15 -0.72 74406 0:00.07 Kf6 Kd2 Rh8 Kd3 Kf7 d5 Rh4 Kc3 Ra4 Re2 Kf6 d6 Ra6 Rd2 Ra8 Kb4 Ke6
14 -0.70 45815 0:00.04 Kf6 Kd2 Rh8 Kd3 Kf5 d5 Ra8 Kd4 Ra4+ Kc5 Ra5+ Kc6 Ra6+ Kc7 Ra7+ Kd6 Ra6+ Kd7 Ra7+ Ke8 Ra8+ Kf7 Ra7+ Re7 Ra2
14 -0.70 39843 0:00.04 Kf6 Kd2 Rh8 Kd3 Kf5 d5 Ra8 Kd4 Ra4+ Kc5 Ra5+ Kc6 Ra6+ Kc7 Ra7+ Kd6 Ra6+ Kd7 Ra7+ Ke8 Ra8+ Kf7 Ra7+ Re7 Ra2
13 -0.70 24914 0:00.02 Kf6 Kd2 Kf5 Kd3 Rh8 d5 Ra8 Kd4 Ra4+ Kc5 Ra5+ Kc6 Ra6+ Kc7 Ra7+ Kb6 Ra2 Rxh3 Ke5 Rd3
13 -0.70 21676 0:00.02 Kf6 Kd2 Kf5 Kd3 Rh8 d5 Ra8 Kd4 Ra4+ Kc5 Ra5+ Kc6 Ra6+ Kc7 Ra7+ Kb6 Ra2 Rxh3 Ke5 Rd3
12 -0.70 16664 0:00.02 Kf6 Kd2 Kf5 Kd3 Rh8 d5 Ra8 Kd4 Ra4+ Kc5 Ra5+ Kc6 Ra6+ Kc7 Ra7+ Kb6 Ra2 Rxh3
12 -0.70 14198 0:00.02 Kf6 Kd2 Kf5 Kd3 Rh8 d5 Ra8 Kd4 Ra4+ Kc5 Ra5+ Kc6 Ra6+ Kc7 Ra7+ Kb6 Ra2 Rxh3
11 -0.70 10791 0:00.01 Kf6 Kd2 Kf5 Kd3 Rh8 d5 Ra8 Kd4 Ra4+ Kc5 Ra5+ Kc6 Ra6+ Kc7 Ra7+ Kb6 Ra2
11 -0.70 9999 0:00.01 Kf6 Kd2 Kf5 Kd3 Rh8 d5 Ra8 Kd4 Ra4+ Kc5 Ra5+ Kc6 Ra6+ Kc7 Ra7+ Kb6 Ra2
10 -0.70 6439 0:00.01 Kf6 Kd2 Kf5 Kd3 Rh8 d5 Ra8 Kd4 Ra4+ Kc5 Ra5+ Kc6 Ra6+ Kc7 Ra7+ Kb6
10 -0.70 5318 0:00.01 Kf6 Kd2 Kf5 Kd3 Rh8 d5 Ra8 Kd4 Ra4+ Kc5 Ra5+ Kc6 Ra6+ Kc7 Ra7+ Kb6
9 -0.70 3302 0:00.00 Kf6 Kd2 Kf5 Kd3 Rh8 Rf3+ Ke6 Ke4 Rh4+ Ke3 Rh7
9 -0.70 2806 0:00.00 Kf6 Kd2 Kf5 Kd3 Rh8 Rf3+ Ke6 Ke4 Rh4+ Ke3 Rh7
8 -0.72 1884 0:00.00 Kf6 Kd2 Kf5 Kd3 Rh8 Rf3+ Ke6 Ke4 Rh5
8 -0.72 1646 0:00.00 Kf6 Kd2 Kf5 Kd3 Rh8 Rf3+ Ke6 Ke4 Rh5
7 -0.72 1270 0:00.00 Kf6 Kd2 Kf5 Kd3 Rh8 Rf3+ Ke6 Ke4 Rh5
7 -0.72 1136 0:00.00 Kf6 Kd2 Kf5 Kd3 Rh8 Rf3+ Ke6 Ke4 Rh5
6 -0.70 826 0:00.00 Kf6 Kd2 Kf5 Kd3 Rh8 Rf3+ Ke6
6 -0.70 729 0:00.00 Kf6 Kd2 Kf5 Kd3 Rh8 Rf3+ Ke6
5 -0.70 523 0:00.00 Kf6 Kd2 Kf5 Kd3 Rh8 Rf3+ Ke6
5 -0.70 460 0:00.00 Kf6 Kd2 Kf5 Kd3 Rh8 Rf3+ Ke6
4 -0.75 323 0:00.00 Kf6 Kd2 Kf5 Kd3
3 -0.75 238 0:00.00 Kf6 Kd2 Kf5 Kd3
2 -0.75 106 0:00.00 Kf6 Kd2 Kf5 Kd3
1 -0.82 33 0:00.00 Kf6 Rf3+
Capital punishment would be more effective as a preventive measure if it were administered prior to the crime.