1.g4 opening is losing?

jp · Post by jp » Tue Mar 03, 2020 4:56 pm

Zenmastur wrote: ↑Tue Mar 03, 2020 4:35 pm
jp wrote: ↑Tue Mar 03, 2020 4:13 pm There is still some hope. If Zenmastur's N is wrong, then I guess morally he has to play White!
Sorry, that's not how it works. He capitulated without giving a mating solution. Therefore, if I show any mate I win.

Surely not if you show mate in 24 and it's really shortest mate in 25.
(If there's a quicker mate in 23 of course you'd be fine.)

Zenmastur · Post by **Zenmastur** » Tue Mar 03, 2020 8:46 pm

jp wrote: ↑Tue Mar 03, 2020 4:56 pm
Zenmastur wrote: ↑Tue Mar 03, 2020 4:35 pm
jp wrote: ↑Tue Mar 03, 2020 4:13 pm There is still some hope. If Zenmastur's N is wrong, then I guess morally he has to play White!
Sorry, that's not how it works. He capitulated without giving a mating solution. Therefore, if I show any mate I win.
Surely not if you show mate in 24 and it's really shortest mate in 25.
(If there's a quicker mate in 23 of course you'd be fine.)

I'm not going to show a mate in 24. I saw a mate in 27 pop up, but when I checked it the line given had an error in it. I tried to find the correct line but failed.

I've analyzed the "main" line to a mate in 28. There may be a mate in 27, I wouldn't be surprised, but I couldn't find a viable line that short. I searched each black response as the "root" node of a search. Some of these searches were quite long. For moves close to the mate the searches were at least 5x the length of the mate and not less than 80 plies. For the moves well removed from the mate, most searches on the main line were at least 100 plies long and there was at least one search for every black response as a root node and then a multi-PV search of the same root to an equal depth (in most but not all cases). The multi-PV searches remove "imposter best responses" for the defender and gives an idea of the strength of the mating defensive lines. E.g. if black has 6 moves, all of which produce a mate length of "X" then in order to get to a mate in "X-1" you have to "bust" all 6 lines of play. On the other hand, if black only has one move that produces a mate in "X" and the next best move produces a mate in "X-6" then it would be much easier "in theory" to shorten the mate.

In any case, I did a reasonable amount of checking to ensure a near-minimal mate.

zullil · Post by **zullil** » Tue Mar 03, 2020 9:21 pm

Zenmastur wrote: ↑Tue Mar 03, 2020 8:46 pm
jp wrote: ↑Tue Mar 03, 2020 4:56 pm
Zenmastur wrote: ↑Tue Mar 03, 2020 4:35 pm
jp wrote: ↑Tue Mar 03, 2020 4:13 pm There is still some hope. If Zenmastur's N is wrong, then I guess morally he has to play White!
Sorry, that's not how it works. He capitulated without giving a mating solution. Therefore, if I show any mate I win.
Surely not if you show mate in 24 and it's really shortest mate in 25.
(If there's a quicker mate in 23 of course you'd be fine.)
I'm not going to show a mate in 24. I saw a mate in 27 pop up, but when I checked it the line given had an error in it. I tried to find the correct line but failed.

I've analyzed the "main" line to a mate in 28. There may be a mate in 27, I wouldn't be surprised, but I couldn't find a viable line that short. I searched each black response as the "root" node of a search. Some of these searches were quite long. For moves close to the mate the searches were at least 5x the length of the mate and not less than 80 plies. For the moves well removed from the mate, most searches on the main line were at least 100 plies long and there was at least one search for every black response as a root node and then a multi-PV search of the same root to an equal depth (in most but not all cases). The multi-PV searches remove "imposter best responses" for the defender and gives an idea of the strength of the mating defensive lines. E.g. if black has 6 moves, all of which produce a mate length of "X" then in order to get to a mate in "X-1" you have to "bust" all 6 lines of play. On the other hand, if black only has one move that produces a mate in "X" and the next best move produces a mate in "X-6" then it would be much easier "in theory" to shorten the mate.

In any case, I did a reasonable amount of checking to ensure a near-minimal mate.

Stockfish-dev provided

Mate in 28 36. Rh8+ Kf7 37. Rf1+ Qf5 38. Rxf5+ Kg6 39. Rg5+ Kf6 40. Bd3 dxe3 41. Rg6+ Kf7 42. bxc3 e2 43. Ne5+ Ke7 44. Bxe2 Rdc7 45. Bh5 Rc5 46. Nc6+ Rxc6 47. Rxc6 Bd7 48. Rg6 Rc7 49. Rh7 Rc6 50. Rgxg7+ Kf6 51. Rxd7 Rxc3 52. Bg4 Rg3 53. Rdf7+ Ke5 54. Rh5+ Kd6 55. Rf6+ Ke7 56. Rxa6 Rg1+ 57. Kd2 Rf1 58. Bf5 Rf2+ 59. Ke1 Rg2 60. Rh7+ Rg7 61. Rxg7+ Kf8 62. Rh7 Ke8 63. Ra8# (depth 116, 19:29:45)

Zenmastur · Post by **Zenmastur** » Tue Mar 03, 2020 10:05 pm

zullil wrote: ↑Tue Mar 03, 2020 9:21 pm
Zenmastur wrote: ↑Tue Mar 03, 2020 8:46 pm
jp wrote: ↑Tue Mar 03, 2020 4:56 pm
Zenmastur wrote: ↑Tue Mar 03, 2020 4:35 pm
jp wrote: ↑Tue Mar 03, 2020 4:13 pm There is still some hope. If Zenmastur's N is wrong, then I guess morally he has to play White!
Sorry, that's not how it works. He capitulated without giving a mating solution. Therefore, if I show any mate I win.
Surely not if you show mate in 24 and it's really shortest mate in 25.
(If there's a quicker mate in 23 of course you'd be fine.)
I'm not going to show a mate in 24. I saw a mate in 27 pop up, but when I checked it the line given had an error in it. I tried to find the correct line but failed.

I've analyzed the "main" line to a mate in 28. There may be a mate in 27, I wouldn't be surprised, but I couldn't find a viable line that short. I searched each black response as the "root" node of a search. Some of these searches were quite long. For moves close to the mate the searches were at least 5x the length of the mate and not less than 80 plies. For the moves well removed from the mate, most searches on the main line were at least 100 plies long and there was at least one search for every black response as a root node and then a multi-PV search of the same root to an equal depth (in most but not all cases). The multi-PV searches remove "imposter best responses" for the defender and gives an idea of the strength of the mating defensive lines. E.g. if black has 6 moves, all of which produce a mate length of "X" then in order to get to a mate in "X-1" you have to "bust" all 6 lines of play. On the other hand, if black only has one move that produces a mate in "X" and the next best move produces a mate in "X-6" then it would be much easier "in theory" to shorten the mate.

In any case, I did a reasonable amount of checking to ensure a near-minimal mate.
Stockfish-dev provided

Mate in 28 36. Rh8+ Kf7 37. Rf1+ Qf5 38. Rxf5+ Kg6 39. Rg5+ Kf6 40. Bd3 dxe3 41. Rg6+ Kf7 42. bxc3 e2 43. Ne5+ Ke7 44. Bxe2 Rdc7 45. Bh5 Rc5 46. Nc6+ Rxc6 47. Rxc6 Bd7 48. Rg6 Rc7 49. Rh7 Rc6 50. Rgxg7+ Kf6 51. Rxd7 Rxc3 52. Bg4 Rg3 53. Rdf7+ Ke5 54. Rh5+ Kd6 55. Rf6+ Ke7 56. Rxa6 Rg1+ 57. Kd2 Rf1 58. Bf5 Rf2+ 59. Ke1 Rg2 60. Rh7+ Rg7 61. Rxg7+ Kf8 62. Rh7 Ke8 63. Ra8# (depth 116, 19:29:45)

My main line was:
36.Rh8+ Kf7 37.Rf1+ Qf5 38.Rxf5+ Ke6 39.Re5+ Kd6 40.Bf4 Rf7 41.Rd8+ Bd7 42.Rf5+ Ke6 43.Rxf7 Kxf7 44.Bc4+ Be6 45.Bxe6+ Kxe6 46.Nxa7 Ba5 47.Rxd4 Kf7 48.Bc7 Bxc7 49.Rd7+ Ke6 50.Rxc7 g5 51.c4 Kd6 52.Rg7 g4 53.Rxg4 a5 54.Re4 a4 55.a3 Kc5 56.Nb5 Kb6 57.Re7 Kc6 58.Rc7+ Kb6 59.Rc8 Ka5 60.Nd6 Kb6 61.c5+ Ka7 62.Rf8 Ka6 63.Ra8#

My 38. ... Kg6 line differs from yours:

36.Rh8+ Kf7 37.Rf1+ Qf5 38.Rxf5+ Kg6 39.Rg5+ Kf6 40.Bf4 Bxb2+ 41.Kxb2 Rab7 42.Rf8+ Rf7 43.Rxf7+ Rxf7 44.Bd3 Rb7+ 45.Kc1 Rb5 46.Bxb5 axb5 47.Rxb5 d3 48.Bg5+ Ke6 49.Rb6 Kf5 50.Ne7+ Kxg5 51.Nxc8 Kf4 52.Rg6 Kf5 53.Ne7+ Kf4 54.cxd3 Ke3 55.a4 Kxd3 56.a5 Kc4 57.a6 Kc5 58.a7 Kd4 59.a8=Q Kd3 60.Qf3+ Kc4 61.Rg4+ Kb5 62.Qc6+ Ka5 63.Ra4#

I'll look at the differences as time permits. But, I'm sure both are valid mates.

Regards,

Zenmastur

Ovyron · Post by **Ovyron** » Wed Mar 04, 2020 12:06 am

Well, my efforts got stuck improving 40.Bd3, so no wonder I couldn't get 40.Bd3 to a mate in 28 at the root. 40.Bd3 is good enough to mate any defense, unfortunately it takes too much time to find its shortest mate (which in my approach was necessary before solving 40.Bf4 because, how could you say your minimal mate is 28 if 40.Bd3 could mate in 27?)

fastgm · Post by **fastgm** » Wed Mar 04, 2020 12:09 am

This are my lines:

+M27 36.Rh8+ Kf7 37.Rf1+ Qf5 38.Rxf5+ Kg6 39.Rg5+ Kf6 40.Bf4 axb5 41.Nxa7 Rxa7 42.Rf8+ Rf7 43.Rxc8 Be1 44.Rc6+ Ke7 45.Rc7+ Kf6 46.Rxb5 Rxc7 47.Bxc7 Ke6 48.Re5+ Kd7 49.Rxe1 Kxc7 50.a4 g5 51.Kd2 Kc6 52.Kd3 g4 53.Kxd4 g3 54.Ke5 Kd7 55.Rg1 Kc6 56.Rxg3 Kb6 57.Kd6 Kb7 58.Rg7+ Kc8 59.b3 Kb8 60.Kc6 Ka8 61.Kb6 Kb8 62.Rg8+

+M26 36.Rh8+ Kf7 37.Rf1+ Qf5 38.Rxf5+ Ke6 39.Re5+ Kd6 40.Bf4 axb5 41.Nxa7 Rxa7 42.Rxc8 Ba5 43.a4 Rf7 44.Rf5+ Kd7 45.Rc7+ Bxc7 46.Rxf7+ Ke6 47.Rxc7 bxa4 48.Rxg7 Kf5 49.Bg3 Ke6 50.Ra7 d3 51.cxd3 a3 52.bxa3 Kf6 53.d4 Kg6 54.d5 Kf5 55.d6 Kg4 56.d7 Kxg3 57.d8Q Kf4 58.Re7 Kf5 59.Qf8+ Kg4 60.Rg7+ Kh5 61.Qh8+

+M26 36.Rh8+ Kf7 37.Rf1+ Qf6 38.Bc4+ Rd5 39.Bxd5+ Be6 40.Bxe6+ Kxe6 41.Rxf6+ gxf6 42.Nxa7 Bb4 43.Bxd4 Bd6 44.Kd2 Bf4+ 45.Kd3 a5 46.Nb5 f5 47.Rf8 Bg5 48.Re8+ Kd7 49.Re5 Bd8 50.Rxf5 Ke6 51.Ke4 a4 52.Rh5 a3 53.bxa3 Be7 54.Rh6+ Kd7 55.Kd5 Bf8 56.Rh7+ Kd8 57.Bf6+ Be7 58.Rxe7 Kc8 59.Rh7 Kb8 60.Kc6 Kc8 61.Rh8+

fastgm · Post by **fastgm** » Wed Mar 04, 2020 1:04 am

Zenmastur wrote: ↑Tue Mar 03, 2020 10:05 pm
My 38. ... Kg6 line differs from yours:

36.Rh8+ Kf7 37.Rf1+ Qf5 38.Rxf5+ Kg6 39.Rg5+ Kf6 40.Bf4 Bxb2+ 41.Kxb2 Rab7 42.Rf8+ Rf7 43.Rxf7+ Rxf7 44.Bd3 Rb7+ 45.Kc1 Rb5 46.Bxb5 axb5 47.Rxb5 d3 48.Bg5+ Ke6 49.Rb6 Kf5 50.Ne7+ Kxg5 51.Nxc8 Kf4 52.Rg6 Kf5 53.Ne7+ Kf4 54.cxd3 Ke3 55.a4 Kxd3 56.a5 Kc4 57.a6 Kc5 58.a7 Kd4 59.a8=Q Kd3 60.Qf3+ Kc4 61.Rg4+ Kb5 62.Qc6+ Ka5 63.Ra4#

I'll look at the differences as time permits. But, I'm sure both are valid mates.

Regards,

Zenmastur

36.Rh8+ Kf7 37.Rf1+ Qf5 38.Rxf5+ Kg6 39.Rg5+ Kf6 40.Bf4 Bxb2+ is mate in 26

41.Kxb2 Rab7 42.Rf8+ Rf7 43.Rxf7+ Rxf7 44.Bd3 Rb7+ 45.Kc1 Rb5 46.Bxb5 axb5 47.Rxb5 d3 48.a4 Ba6 49.cxd3 g5 50.Bxg5+ Kg6 51.Rb6 Kxg5 52.Rxa6 Kf6 53.Kd2 Ke6 54.Nd4+ Kd5 55.Nf3 Kc5 56.Ne5 Kb4 57.Rb6+ Ka5 58.Nd7 Kxa4 59.Kc3 Ka5 60.Kc4 Ka4 61.Ra6+

Zenmastur · Post by **Zenmastur** » Wed Mar 04, 2020 1:26 am

fastgm wrote: ↑Wed Mar 04, 2020 1:04 am
Zenmastur wrote: ↑Tue Mar 03, 2020 10:05 pm
My 38. ... Kg6 line differs from yours:

36.Rh8+ Kf7 37.Rf1+ Qf5 38.Rxf5+ Kg6 39.Rg5+ Kf6 40.Bf4 Bxb2+ 41.Kxb2 Rab7 42.Rf8+ Rf7 43.Rxf7+ Rxf7 44.Bd3 Rb7+ 45.Kc1 Rb5 46.Bxb5 axb5 47.Rxb5 d3 48.Bg5+ Ke6 49.Rb6 Kf5 50.Ne7+ Kxg5 51.Nxc8 Kf4 52.Rg6 Kf5 53.Ne7+ Kf4 54.cxd3 Ke3 55.a4 Kxd3 56.a5 Kc4 57.a6 Kc5 58.a7 Kd4 59.a8=Q Kd3 60.Qf3+ Kc4 61.Rg4+ Kb5 62.Qc6+ Ka5 63.Ra4#

I'll look at the differences as time permits. But, I'm sure both are valid mates.

Regards,

Zenmastur
36.Rh8+ Kf7 37.Rf1+ Qf5 38.Rxf5+ Kg6 39.Rg5+ Kf6 40.Bf4 Bxb2+ is mate in 26

41.Kxb2 Rab7 42.Rf8+ Rf7 43.Rxf7+ Rxf7 44.Bd3 Rb7+ 45.Kc1 Rb5 46.Bxb5 axb5 47.Rxb5 d3 48.a4 Ba6 49.cxd3 g5 50.Bxg5+ Kg6 51.Rb6 Kxg5 52.Rxa6 Kf6 53.Kd2 Ke6 54.Nd4+ Kd5 55.Nf3 Kc5 56.Ne5 Kb4 57.Rb6+ Ka5 58.Nd7 Kxa4 59.Kc3 Ka5 60.Kc4 Ka4 61.Ra6+

My computer is tied up right now. But I will look at it in due time. On the few cores and little memory I have left I'm looking at what you posted. There seems to be some issues. But until I can free up some more resources I won't be able to tell for sure if it's a problem.

What I have now is this:

Code: Select all

[Event "?"]
[Site "?"]
[Date "2020.03.03"]
[Round "?"]
[White "FastGM solution 3"]
[Black "?"]
[Result "*"]
[EventDate "2020.03.03"]
[FEN "2b3k1/r2r2p1/p1N1q3/1B6/3p4/2b1B2R/PPP5/2K4R w - - 0 36"]

36.Rh8+ Kf7 37.Rf1+ Qf6 38.Bc4+ Rd5 39.Bxd5+ Be6 40.Bxe6+ Kxe6 41.Rxf6+ gxf6 42.Nxa7 Bb4 43.Bxd4 Bd6 44.Kd2 Bf4+ 
(  [Stockfish 250220 64 POPCNT] 75:M16 44...Kf5 45.Kd3 Bf4 46.Ra8 Ke6 47.Nc8 f5 48.Rxa6+ Kd7 49.Na7 Bb8 50.Kc4 f4 51.Kd5 f3 52.Nb5 f2 53.Rf6 Bg3 54.Rf7+ Kd8 55.Nd6 Bxd6 56.Kxd6 f1=Q 57.Rxf1 Kc8 58.Rf7 Kb8 59.Kc6 Kc8 60.Rf8# )
(  [Stockfish 250220 64 POPCNT] 75:M16 44...Bf4+ 45.Kd3 Bc1 46.Rc8 f5 47.Rc6+ Ke7 48.Rf6 Bg5 49.Rxf5 Bh4 50.Rh5 Bf6 51.Rh7+ Ke6 52.Rh6 a5 53.Rxf6+ Kd7 54.Nb5 Ke7 55.Ke4 a4 56.Kd5 Kd7 57.Rf7+ Kc8 58.Nd6+ Kb8 59.Bb6 Ka8 60.Rf8# )
(  [Stockfish 250220 64 POPCNT] 75:M15 44...Kf7 45.Kd3 Kg7 46.Ra8 a5 47.Ke4 Kg6 48.Rg8+ Kf7 49.Rg4 Ke6 50.Rg6 Be7 51.Nc6 a4 52.Nxe7 Kxe7 53.Rxf6 Kd7 54.Kd5 Kc7 55.Rf7+ Kd8 56.Bf6+ Kc8 57.Kc6 Kb8 58.Bd4 a3 59.Rf8# )
(  [Stockfish 250220 64 POPCNT] 74:M15 44...a5 45.Kd3 Kf5 46.Rh6 Be5 47.Bxe5 fxe5 48.Ra6 a4 49.Rxa4 e4+ 50.Rxe4 Kf6 51.Nb5 Kg5 52.Re6 Kf5 53.Nd4+ Kg5 54.Ke4 Kg4 55.Nf5 Kg5 56.Ne3 Kh4 57.Kf4 Kh5 58.Rf6 Kh4 59.Rh6# )
45.Kd3 a5 
(  [Stockfish 250220 64 POPCNT] 80:M15 45...Bc1 46.Rc8 f5 47.Rc6+ Ke7 48.Rxa6 Kf7 49.Nc8 Ke8 50.Nd6+ Kd7 51.Nxf5 Bf4 52.Ke4 Bh2 53.Kd5 Bb8 54.Ra8 Bf4 55.Ra7+ Ke8 56.Nd6+ Bxd6 57.Kxd6 Kf8 58.Bf6 Kg8 59.Ke6 Kf8 60.Ra8# )
(  [Stockfish 250220 64 POPCNT] 80:M15 45...Kf5 46.Ra8 Ke6 47.Nc8 f5 48.Rxa6+ Kd7 49.Na7 Bb8 50.Kc4 f4 51.Kd5 f3 52.Nb5 f2 53.Rf6 Bg3 54.Rf7+ Kd8 55.Nd6 Bxd6 56.Kxd6 f1=Q 57.Rxf1 Kc8 58.Rf7 Kb8 59.Kc6 Kc8 60.Rf8# )
(  [Stockfish 250220 64 POPCNT] 79:M14 45...f5 46.Rg8 a5 47.Rg6+ Kf7 48.Rf6+ Ke7 49.Rxf5 Bc1 50.Ke4 Kd6 51.Rf6+ Ke7 52.Kd5 Bg5 53.Nc6+ Ke8 54.Rf5 a4 55.Rxg5 Kd7 56.Rg7+ Ke8 57.Ke6 Kf8 58.Rh7 Kg8 59.Rh8# )
(  [Stockfish 250220 64 POPCNT] 79:M14 45...a5 46.Rf8 Bg5 47.Ke4 a4 48.Nb5 a3 49.bxa3 Bh4 50.Bc5 f5+ 51.Rxf5 Bg3 52.Nd4+ Kd7 53.Kd5 Bh2 54.Nb5 Bg3 55.Rf7+ Kc8 56.Kc6 Bh4 57.Rf8+ Bd8 58.Nd6+ Kb8 59.Rxd8# )
46.Nb5 f5 
(  [Stockfish 250220 64 POPCNT] 81:M15 46...Kf5 47.Ra8 a4 48.Rxa4 Bc1 49.Nc3 Bg5 50.Ra6 Bh4 51.Nd5 Bg5 52.Bxf6 Bc1 53.Ne3+ Kg6 54.Ke4 Bd2 55.Ng4 Kh5 56.Ne5 Bg5 57.Bxg5 Kxg5 58.Rg6+ Kh4 59.Kf3 Kh5 60.Kf4 Kh4 61.Rh6# )
(  [Stockfish 250220 64 POPCNT] 80:M14 46...f5 47.Rf8 Bg5 48.Re8+ Kd7 49.Re5 Bc1 50.Rxf5 Ke6 51.Rf6+ Ke7 52.Ke4 Bd2 53.Kd5 Bb4 54.Rf5 Kd7 55.Rf7+ Kc8 56.Bc5 Bxc5 57.Kxc5 a4 58.Kc6 Kd8 59.Nd6 a3 60.Rd7# )
(  [Stockfish 250220 64 POPCNT] 80:M13 46...Bg5 47.Be3 Kf5 48.Bxg5 fxg5 49.Nd4+ Kf6 50.Ke4 a4 51.Rh6+ Kf7 52.Ke5 a3 53.bxa3 Ke7 54.Rh7+ Kf8 55.Ra7 g4 56.Ne6+ Kg8 57.Kf6 Kh8 58.Ng5 g3 59.Ra8# )
(  [Stockfish 250220 64 POPCNT] 80:M13 46...a4 47.Ke4 Bd2 48.Rf8 Bg5 49.Bc5 f5+ 50.Rxf5 Bd8 51.Nd4+ Kd7 52.Kd5 a3 53.bxa3 Bh4 54.Ne6 Bg3 55.Rf7+ Kc8 56.Kc6 Bd6 57.Kxd6 Kb8 58.Kc6 Kc8 59.Rf8# )
47.Rf8 Bg5 
(  [Stockfish 250220 64 POPCNT] 80:M13 47...Bg5 48.Re8+ Kd7 49.Re5 Bc1 50.Rxf5 Ke6 51.Ke4 Bd2 52.Rf6+ Ke7 53.Kd5 Bb4 54.Rf5 Kd7 55.Rf7+ Kc8 56.Nd6+ Bxd6 57.Kxd6 a4 58.Kc6 Kd8 59.Bc5 Ke8 60.Rf8# )
(  [Stockfish 250220 64 POPCNT] 80:M12 47...Bg3 48.Rf6+ Kd7 49.Rxf5 a4 50.Ke4 Ke6 51.Rf6+ Kd7 52.Kd5 Ke7 53.Rf5 a3 54.Bc5+ Kd7 55.Rf7+ Kc8 56.Kc6 Bh4 57.Rf8+ Bd8 58.Nd6+ Kb8 59.Rxd8# )
(  [Stockfish 250220 64 POPCNT] 80:M12 47...a4 48.Rf6+ Ke7 49.Rxf5 Bb8 50.Kc4 Ke6 51.Rf6+ Ke7 52.Kd5 a3 53.Rf5 Kd7 54.bxa3 Ke7 55.Bc5+ Kd7 56.Rf7+ Kd8 57.Kc6 Bd6 58.Bxd6 Ke8 59.Rf8# )
(  [Stockfish 250220 64 POPCNT] 80:M12 47...Bc1 48.Rf6+ Ke7 49.Rxf5 a4 50.Ke4 Ke6 51.Rf6+ Ke7 52.Kd5 Bg5 53.Rf5 Bh4 54.Bc5+ Kd8 55.Rf7 a3 56.Nd6 Be7 57.Kc6 Bxd6 58.Bxd6 axb2 59.Rf8# )
48.Re8+ Kd7 
(  [Stockfish 250220 64 POPCNT] 77:M12 48...Kd7 49.Re5 Bc1 50.Rxf5 Ke6 51.Rf6+ Ke7 52.Ke4 Bd2 53.Kd5 Bb4 54.Rf5 Kd7 55.Rf7+ Kc8 56.Nd6+ Bxd6 57.Kxd6 a4 58.Kc6 Kd8 59.Bc5 Ke8 60.Rf8# )
(  [Stockfish 250220 64 POPCNT] 77:M9 48...Kd5 49.Rg8 Bf6 50.Bxf6 Ke6 51.Bc3 f4 52.Ke4 Kf7 53.Rg7+ Kf8 54.Bf6 f3 55.Nc7 f2 56.Ne6+ Ke8 57.Re7# )
(  [Stockfish 250220 64 POPCNT] 77:M9 48...Be7 49.Bc5 a4 50.Rxe7+ Kf6 51.Ke3 a3 52.Kf4 axb2 53.Na3 b1=Q 54.Nxb1 Kg6 55.Bd4 Kh5 56.Re6 Kh4 57.Rh6# )
(  [Stockfish 250220 64 POPCNT] 77:M8 48...Kf7 49.Nd6+ Kg6 50.Rg8+ Kh5 51.Nxf5 a4 52.Be3 Bf6 53.Ke2 a3 54.Kf3 axb2 55.Rg4 Be5 56.Rg5# )
49.Re5 Bd8 
(  [Stockfish 250220 64 POPCNT] 70:M11 49...a4 50.Kc4 Be7 51.Kd5 f4 52.Rf5 a3 53.bxa3 f3 54.Rxf3 Bg5 55.Rf7+ Be7 56.Bf6 Kd8 57.Rxe7 Kc8 58.Nd6+ Kb8 59.Bd4 Ka8 60.Re8# )
(  [Stockfish 250220 64 POPCNT] 70:M11 49...Bh4 50.Kc4 Bg3 51.Rxf5 Ke6 52.Rf6+ Ke7 53.Kd5 a4 54.Rf5 a3 55.Bc5+ Kd7 56.Rf7+ Kc8 57.Kc6 Bh4 58.Rf8+ Bd8 59.Nd6+ Kb8 60.Rxd8# )
(  [Stockfish 250220 64 POPCNT] 70:M11 49...Be7 50.Kc4 f4 51.Kd5 a4 52.Rf5 a3 53.bxa3 f3 54.Rxf3 Bg5 55.Rf7+ Be7 56.Bf6 Kd8 57.Rxe7 Kc8 58.Nd6+ Kb8 59.Bd4 Ka8 60.Re8# )
(  [Stockfish 250220 64 POPCNT] 70:M11 49...Bf6 50.Rxf5 Bd8 51.Ke4 Ke6 52.Re5+ Kf7 53.Nd6+ Kg6 54.Kf4 Bf6 55.Re6 Kh7 56.Bxf6 Kg6 57.Bd4+ Kh7 58.Kf5 Kg8 59.Re8+ Kh7 60.Rh8# )
50.Rxf5 Ke6 
(  [Stockfish 250220 64 POPCNT] 80:M11 50...Ke6 51.Ke4 a4 52.Re5+ Kd7 53.Kd5 a3 54.bxa3 Be7 55.Rf5 Bh4 56.Rf7+ Be7 57.Bf6 Kd8 58.Rxe7 Kc8 59.Rf7 Kb8 60.Kc6 Kc8 61.Rf8# )
(  [Stockfish 250220 64 POPCNT] 80:M10 50...Be7 51.Ke4 Ke6 52.Nc7+ Kd7 53.Rf7 Kd6 54.Bc5+ Kxc5 55.Rxe7 Kc6 56.Nd5 Kb5 57.Rc7 Ka6 58.c4 a4 59.a3 Ka5 60.Ra7# )
(  [Stockfish 250220 64 POPCNT] 80:M10 50...Ke7 51.Bf6+ Ke6 52.Nd4+ Kd7 53.Bxd8 Kxd8 54.Ke4 Kc8 55.Rf7 Kd8 56.Nb5 Kc8 57.Kd5 a4 58.Kc6 Kd8 59.Nd6 a3 60.Rd7# )
(  [Stockfish 250220 64 POPCNT] 80:M10 50...Bh4 51.Ke4 Ke6 52.Bc5 Bf6 53.Nc7+ Kf7 54.Bd4 Kf8 55.Rxf6+ Ke7 56.Kd5 Kd7 57.Rf7+ Kc8 58.Kc6 Kd8 59.Rf8+ Ke7 60.Bc5# )
51.Ke4 a4 
(  [Stockfish 250220 64 POPCNT] 80:M10 51...a4 52.Re5+ Kd7 53.Kd5 a3 54.bxa3 Bf6 55.Rf5 Be7 56.Rf7 Ke8 57.Ke6 Kd8 58.Rxe7 Kc8 59.Re8+ Kb7 60.Nd6+ Kc7 61.Rc8# )
(  [Stockfish 250220 64 POPCNT] 80:M9 51...Be7 52.Nc7+ Kd7 53.Rf7 Kd6 54.Bc5+ Kxc5 55.Rxe7 Kc6 56.Nd5 Kb5 57.Rc7 Ka6 58.c4 a4 59.a3 Ka5 60.Ra7# )
(  [Stockfish 250220 64 POPCNT] 80:M9 51...Bh4 52.Bc5 Bf6 53.Nc7+ Kf7 54.Bd4 Kf8 55.Rxf6+ Ke7 56.Kd5 Kd7 57.Rf7+ Kc8 58.Kc6 Kd8 59.Rf8+ Ke7 60.Bc5# )
(  [Stockfish 250220 64 POPCNT] 80:M7 51...Kd7 52.Kd5 Be7 53.Rf7 Kd8 54.Ke6 Bb4 55.Be5 Kc8 56.Na7+ Kd8 57.Rc7 Be7 58.Rc8# )
52.Rh5 a3 
(  [Stockfish 250220 64 POPCNT] 91:M9 52...Be7 53.Rh6+ Kd7 54.Kd5 a3 55.bxa3 Bd8 56.Rh7+ Be7 57.Bf6 Kd8 58.Bxe7+ Kd7 59.Bf6+ Kc8 60.Kc6 Kb8 61.Rh8# )
(  [Stockfish 250220 64 POPCNT] 91:M9 52...a3 53.bxa3 Be7 54.Rh6+ Kd7 55.Kd5 Bd8 56.Rh7+ Be7 57.Bf6 Kd8 58.Bxe7+ Kd7 59.Bf6+ Kc8 60.Kc6 Kb8 61.Rh8# )
(  [Stockfish 250220 64 POPCNT] 91:M8 52...Ke7 53.Rh6 a3 54.Kd5 Kd7 55.Rh7+ Be7 56.Bf6 axb2 57.Rxe7+ Kc8 58.Kc6 Kd8 59.Re1+ Kc8 60.Re8# )
(  [Stockfish 250220 64 POPCNT] 91:M8 52...Ba5 53.Rh6+ Kd7 54.Kd5 Bd8 55.Rh7+ Be7 56.Bf6 Ke8 57.Bxe7 Kd7 58.Bf6+ Kc8 59.Kc6 Kb8 60.Rh8# )
53.bxa3 Be7 
(  [Stockfish 250220 64 POPCNT] 100:M8 53...Be7 54.Rh6+ Kd7 55.Kd5 Bd8 56.Rh7+ Be7 57.Bf6 Kd8 58.Bxe7+ Kd7 59.Bf6+ Kc8 60.Kc6 Kb8 61.Rh8# )
(  [Stockfish 250220 64 POPCNT] 100:M7 53...Kd7 54.Kd5 Be7 55.Rh7 Kd8 56.Ke6 Bf8 57.Rh8 Kc8 58.Nd6+ Kb8 59.Rxf8+ Kc7 60.Rc8# )
(  [Stockfish 250220 64 POPCNT] 100:M7 53...Bb6 54.Rh6+ Ke7 55.Rxb6 Kf7 56.Kf5 Ke7 57.Rb7+ Kf8 58.Ke6 Kg8 59.c3 Kf8 60.Rb8# )
(  [Stockfish 250220 64 POPCNT] 100:M7 53...Ba5 54.Rh6+ Kf7 55.Nd6+ Ke7 56.Kd5 Bd8 57.Bf6+ Kd7 58.Rh7+ Be7 59.Rxe7+ Kd8 60.Ra7# )
54.Rh6+ Kd7 
(  [Stockfish 250220 64 POPCNT] 106:M7 54...Kd7 55.Kd5 Bd8 56.Rh7+ Be7 57.Bf6 Kd8 58.Bxe7+ Kd7 59.Bf6+ Kc8 60.Kc6 Kb8 61.Rh8# )
(  [Stockfish 250220 64 POPCNT] 106:M6 54...Kf7 55.Kd5 Bg5 56.Nd6+ Kf8 57.Rh7 Bf4 58.Ke6 Be5 59.Bxe5 Kg8 60.Rh8# )
(  [Stockfish 250220 64 POPCNT] 105:M4 54...Bf6 55.Bxf6 Kf7 56.Kd5 Kg8 57.Ke6 Kf8 58.Rh8# )
55.Kd5 Bf8 
(  [Stockfish 250220 64 POPCNT] 104:M6 55...Bd8 56.Rh7+ Be7 57.Bf6 Kd8 58.Rxe7 Kc8 59.Kc6 Kd8 60.Re1+ Kc8 61.Re8# )
(  [Stockfish 250220 64 POPCNT] 104:M6 55...Bg5 56.Rh7+ Be7 57.Bf6 Kd8 58.Rxe7 Kc8 59.Kc6 Kd8 60.Re1+ Kc8 61.Re8# )
(  [Stockfish 250220 64 POPCNT] 103:M6 55...Bf8 56.Rh7+ Kd8 57.Bf6+ Be7 58.Rxe7 Kc8 59.Kc6 Kd8 60.Re1+ Kc8 61.Re8# )
(  [Stockfish 250220 64 POPCNT] 103:M5 55...Kd8 56.Ke6 Kc8 57.Kxe7 Kb8 58.Rb6+ Ka8 59.Nc7+ Ka7 60.Rb1# )
56.Rh7+ Kd8 
(  [Stockfish 250220 64 POPCNT] 190:M5 56...Kd8 57.Bf6+ Be7 58.Rxe7 Kc8 59.Kc6 Kd8 60.Re1+ Kc8 61.Re8# )
(  [Stockfish 250220 64 POPCNT] 190:M5 56...Be7 57.Bf6 Kd8 58.Rxe7 Kc8 59.Kc6 Kd8 60.Re1+ Kc8 61.Re8# )
(  [Stockfish 250220 64 POPCNT] 189:M4 56...Bg7 57.Bxg7 Kd8 58.Bf6+ Kc8 59.Kc6 Kb8 60.Rh8# )
(  [Stockfish 250220 64 POPCNT] 189:M4 56...Ke8 57.Nd6+ Bxd6 58.Kxd6 Kf8 59.Ke6 Kg8 60.Rh8# )
57.Bf6+ Be7 
(  [Stockfish 250220 64 POPCNT] 245:M4 57...Be7 58.Rxe7 Kc8 59.Kc6 Kd8 60.Re1+ Kc8 61.Re8# )
(  [Stockfish 250220 64 POPCNT] 245:M3 57...Kc8 58.Kc6 Kb8 59.Rh8 Ka8 60.Rxf8# )
(  [Stockfish 250220 64 POPCNT] 245:M1 57...Ke8 58.Nc7# )
58.Rxe7 Kc8 
(  [Stockfish 250220 64 POPCNT] 245:M3 58...Kc8 59.Kc6 Kd8 60.Re1+ Kc8 61.Re8# )
59.Rh7 Kb8 
(  [Stockfish 250220 64 POPCNT] 245:M2 59...Kb8 60.Kc6 Kc8 61.Rh8# )
60.Kc6 Kc8 
(  [Stockfish 250220 64 POPCNT] 245:M1 60...Kc8 61.Rh8# )
(  [Stockfish 250220 64 POPCNT] 245:M1 60...Ka8 61.Rh8# )
61.Rh8# *

Regards,

Zenmastur

fastgm · Post by **fastgm** » Wed Mar 04, 2020 9:29 pm

Zenmastur wrote: ↑Wed Mar 04, 2020 1:26 am My computer is tied up right now. But I will look at it in due time. On the few cores and little memory I have left I'm looking at what you posted. There seems to be some issues. But until I can free up some more resources I won't be able to tell for sure if it's a problem.

What I have now is this:

Code: Select all

[Event "?"]
[Site "?"]
[Date "2020.03.03"]
[Round "?"]
[White "FastGM solution 3"]
[Black "?"]
[Result "*"]
[EventDate "2020.03.03"]
[FEN "2b3k1/r2r2p1/p1N1q3/1B6/3p4/2b1B2R/PPP5/2K4R w - - 0 36"]

36.Rh8+ Kf7 37.Rf1+ Qf6 38.Bc4+ Rd5 39.Bxd5+ Be6 40.Bxe6+ Kxe6 41.Rxf6+ gxf6 42.Nxa7 Bb4 43.Bxd4 Bd6 44.Kd2 Bf4+ 
(  [Stockfish 250220 64 POPCNT] 75:M16 44...Kf5 45.Kd3 Bf4 46.Ra8 Ke6 47.Nc8 f5 48.Rxa6+ Kd7 49.Na7 Bb8 50.Kc4 f4 51.Kd5 f3 52.Nb5 f2 53.Rf6 Bg3 54.Rf7+ Kd8 55.Nd6 Bxd6 56.Kxd6 f1=Q 57.Rxf1 Kc8 58.Rf7 Kb8 59.Kc6 Kc8 60.Rf8# )
(  [Stockfish 250220 64 POPCNT] 75:M16 44...Bf4+ 45.Kd3 Bc1 46.Rc8 f5 47.Rc6+ Ke7 48.Rf6 Bg5 49.Rxf5 Bh4 50.Rh5 Bf6 51.Rh7+ Ke6 52.Rh6 a5 53.Rxf6+ Kd7 54.Nb5 Ke7 55.Ke4 a4 56.Kd5 Kd7 57.Rf7+ Kc8 58.Nd6+ Kb8 59.Bb6 Ka8 60.Rf8# )
(  [Stockfish 250220 64 POPCNT] 75:M15 44...Kf7 45.Kd3 Kg7 46.Ra8 a5 47.Ke4 Kg6 48.Rg8+ Kf7 49.Rg4 Ke6 50.Rg6 Be7 51.Nc6 a4 52.Nxe7 Kxe7 53.Rxf6 Kd7 54.Kd5 Kc7 55.Rf7+ Kd8 56.Bf6+ Kc8 57.Kc6 Kb8 58.Bd4 a3 59.Rf8# )
(  [Stockfish 250220 64 POPCNT] 74:M15 44...a5 45.Kd3 Kf5 46.Rh6 Be5 47.Bxe5 fxe5 48.Ra6 a4 49.Rxa4 e4+ 50.Rxe4 Kf6 51.Nb5 Kg5 52.Re6 Kf5 53.Nd4+ Kg5 54.Ke4 Kg4 55.Nf5 Kg5 56.Ne3 Kh4 57.Kf4 Kh5 58.Rf6 Kh4 59.Rh6# )
45.Kd3 a5 
(  [Stockfish 250220 64 POPCNT] 80:M15 45...Bc1 46.Rc8 f5 47.Rc6+ Ke7 48.Rxa6 Kf7 49.Nc8 Ke8 50.Nd6+ Kd7 51.Nxf5 Bf4 52.Ke4 Bh2 53.Kd5 Bb8 54.Ra8 Bf4 55.Ra7+ Ke8 56.Nd6+ Bxd6 57.Kxd6 Kf8 58.Bf6 Kg8 59.Ke6 Kf8 60.Ra8# )
(  [Stockfish 250220 64 POPCNT] 80:M15 45...Kf5 46.Ra8 Ke6 47.Nc8 f5 48.Rxa6+ Kd7 49.Na7 Bb8 50.Kc4 f4 51.Kd5 f3 52.Nb5 f2 53.Rf6 Bg3 54.Rf7+ Kd8 55.Nd6 Bxd6 56.Kxd6 f1=Q 57.Rxf1 Kc8 58.Rf7 Kb8 59.Kc6 Kc8 60.Rf8# )
(  [Stockfish 250220 64 POPCNT] 79:M14 45...f5 46.Rg8 a5 47.Rg6+ Kf7 48.Rf6+ Ke7 49.Rxf5 Bc1 50.Ke4 Kd6 51.Rf6+ Ke7 52.Kd5 Bg5 53.Nc6+ Ke8 54.Rf5 a4 55.Rxg5 Kd7 56.Rg7+ Ke8 57.Ke6 Kf8 58.Rh7 Kg8 59.Rh8# )
(  [Stockfish 250220 64 POPCNT] 79:M14 45...a5 46.Rf8 Bg5 47.Ke4 a4 48.Nb5 a3 49.bxa3 Bh4 50.Bc5 f5+ 51.Rxf5 Bg3 52.Nd4+ Kd7 53.Kd5 Bh2 54.Nb5 Bg3 55.Rf7+ Kc8 56.Kc6 Bh4 57.Rf8+ Bd8 58.Nd6+ Kb8 59.Rxd8# )
46.Nb5 f5 
(  [Stockfish 250220 64 POPCNT] 81:M15 46...Kf5 47.Ra8 a4 48.Rxa4 Bc1 49.Nc3 Bg5 50.Ra6 Bh4 51.Nd5 Bg5 52.Bxf6 Bc1 53.Ne3+ Kg6 54.Ke4 Bd2 55.Ng4 Kh5 56.Ne5 Bg5 57.Bxg5 Kxg5 58.Rg6+ Kh4 59.Kf3 Kh5 60.Kf4 Kh4 61.Rh6# )
(  [Stockfish 250220 64 POPCNT] 80:M14 46...f5 47.Rf8 Bg5 48.Re8+ Kd7 49.Re5 Bc1 50.Rxf5 Ke6 51.Rf6+ Ke7 52.Ke4 Bd2 53.Kd5 Bb4 54.Rf5 Kd7 55.Rf7+ Kc8 56.Bc5 Bxc5 57.Kxc5 a4 58.Kc6 Kd8 59.Nd6 a3 60.Rd7# )
(  [Stockfish 250220 64 POPCNT] 80:M13 46...Bg5 47.Be3 Kf5 48.Bxg5 fxg5 49.Nd4+ Kf6 50.Ke4 a4 51.Rh6+ Kf7 52.Ke5 a3 53.bxa3 Ke7 54.Rh7+ Kf8 55.Ra7 g4 56.Ne6+ Kg8 57.Kf6 Kh8 58.Ng5 g3 59.Ra8# )
(  [Stockfish 250220 64 POPCNT] 80:M13 46...a4 47.Ke4 Bd2 48.Rf8 Bg5 49.Bc5 f5+ 50.Rxf5 Bd8 51.Nd4+ Kd7 52.Kd5 a3 53.bxa3 Bh4 54.Ne6 Bg3 55.Rf7+ Kc8 56.Kc6 Bd6 57.Kxd6 Kb8 58.Kc6 Kc8 59.Rf8# )
47.Rf8 Bg5 
(  [Stockfish 250220 64 POPCNT] 80:M13 47...Bg5 48.Re8+ Kd7 49.Re5 Bc1 50.Rxf5 Ke6 51.Ke4 Bd2 52.Rf6+ Ke7 53.Kd5 Bb4 54.Rf5 Kd7 55.Rf7+ Kc8 56.Nd6+ Bxd6 57.Kxd6 a4 58.Kc6 Kd8 59.Bc5 Ke8 60.Rf8# )
(  [Stockfish 250220 64 POPCNT] 80:M12 47...Bg3 48.Rf6+ Kd7 49.Rxf5 a4 50.Ke4 Ke6 51.Rf6+ Kd7 52.Kd5 Ke7 53.Rf5 a3 54.Bc5+ Kd7 55.Rf7+ Kc8 56.Kc6 Bh4 57.Rf8+ Bd8 58.Nd6+ Kb8 59.Rxd8# )
(  [Stockfish 250220 64 POPCNT] 80:M12 47...a4 48.Rf6+ Ke7 49.Rxf5 Bb8 50.Kc4 Ke6 51.Rf6+ Ke7 52.Kd5 a3 53.Rf5 Kd7 54.bxa3 Ke7 55.Bc5+ Kd7 56.Rf7+ Kd8 57.Kc6 Bd6 58.Bxd6 Ke8 59.Rf8# )
(  [Stockfish 250220 64 POPCNT] 80:M12 47...Bc1 48.Rf6+ Ke7 49.Rxf5 a4 50.Ke4 Ke6 51.Rf6+ Ke7 52.Kd5 Bg5 53.Rf5 Bh4 54.Bc5+ Kd8 55.Rf7 a3 56.Nd6 Be7 57.Kc6 Bxd6 58.Bxd6 axb2 59.Rf8# )
48.Re8+ Kd7 
(  [Stockfish 250220 64 POPCNT] 77:M12 48...Kd7 49.Re5 Bc1 50.Rxf5 Ke6 51.Rf6+ Ke7 52.Ke4 Bd2 53.Kd5 Bb4 54.Rf5 Kd7 55.Rf7+ Kc8 56.Nd6+ Bxd6 57.Kxd6 a4 58.Kc6 Kd8 59.Bc5 Ke8 60.Rf8# )
(  [Stockfish 250220 64 POPCNT] 77:M9 48...Kd5 49.Rg8 Bf6 50.Bxf6 Ke6 51.Bc3 f4 52.Ke4 Kf7 53.Rg7+ Kf8 54.Bf6 f3 55.Nc7 f2 56.Ne6+ Ke8 57.Re7# )
(  [Stockfish 250220 64 POPCNT] 77:M9 48...Be7 49.Bc5 a4 50.Rxe7+ Kf6 51.Ke3 a3 52.Kf4 axb2 53.Na3 b1=Q 54.Nxb1 Kg6 55.Bd4 Kh5 56.Re6 Kh4 57.Rh6# )
(  [Stockfish 250220 64 POPCNT] 77:M8 48...Kf7 49.Nd6+ Kg6 50.Rg8+ Kh5 51.Nxf5 a4 52.Be3 Bf6 53.Ke2 a3 54.Kf3 axb2 55.Rg4 Be5 56.Rg5# )
49.Re5 Bd8 
(  [Stockfish 250220 64 POPCNT] 70:M11 49...a4 50.Kc4 Be7 51.Kd5 f4 52.Rf5 a3 53.bxa3 f3 54.Rxf3 Bg5 55.Rf7+ Be7 56.Bf6 Kd8 57.Rxe7 Kc8 58.Nd6+ Kb8 59.Bd4 Ka8 60.Re8# )
(  [Stockfish 250220 64 POPCNT] 70:M11 49...Bh4 50.Kc4 Bg3 51.Rxf5 Ke6 52.Rf6+ Ke7 53.Kd5 a4 54.Rf5 a3 55.Bc5+ Kd7 56.Rf7+ Kc8 57.Kc6 Bh4 58.Rf8+ Bd8 59.Nd6+ Kb8 60.Rxd8# )
(  [Stockfish 250220 64 POPCNT] 70:M11 49...Be7 50.Kc4 f4 51.Kd5 a4 52.Rf5 a3 53.bxa3 f3 54.Rxf3 Bg5 55.Rf7+ Be7 56.Bf6 Kd8 57.Rxe7 Kc8 58.Nd6+ Kb8 59.Bd4 Ka8 60.Re8# )
(  [Stockfish 250220 64 POPCNT] 70:M11 49...Bf6 50.Rxf5 Bd8 51.Ke4 Ke6 52.Re5+ Kf7 53.Nd6+ Kg6 54.Kf4 Bf6 55.Re6 Kh7 56.Bxf6 Kg6 57.Bd4+ Kh7 58.Kf5 Kg8 59.Re8+ Kh7 60.Rh8# )
50.Rxf5 Ke6 
(  [Stockfish 250220 64 POPCNT] 80:M11 50...Ke6 51.Ke4 a4 52.Re5+ Kd7 53.Kd5 a3 54.bxa3 Be7 55.Rf5 Bh4 56.Rf7+ Be7 57.Bf6 Kd8 58.Rxe7 Kc8 59.Rf7 Kb8 60.Kc6 Kc8 61.Rf8# )
(  [Stockfish 250220 64 POPCNT] 80:M10 50...Be7 51.Ke4 Ke6 52.Nc7+ Kd7 53.Rf7 Kd6 54.Bc5+ Kxc5 55.Rxe7 Kc6 56.Nd5 Kb5 57.Rc7 Ka6 58.c4 a4 59.a3 Ka5 60.Ra7# )
(  [Stockfish 250220 64 POPCNT] 80:M10 50...Ke7 51.Bf6+ Ke6 52.Nd4+ Kd7 53.Bxd8 Kxd8 54.Ke4 Kc8 55.Rf7 Kd8 56.Nb5 Kc8 57.Kd5 a4 58.Kc6 Kd8 59.Nd6 a3 60.Rd7# )
(  [Stockfish 250220 64 POPCNT] 80:M10 50...Bh4 51.Ke4 Ke6 52.Bc5 Bf6 53.Nc7+ Kf7 54.Bd4 Kf8 55.Rxf6+ Ke7 56.Kd5 Kd7 57.Rf7+ Kc8 58.Kc6 Kd8 59.Rf8+ Ke7 60.Bc5# )
51.Ke4 a4 
(  [Stockfish 250220 64 POPCNT] 80:M10 51...a4 52.Re5+ Kd7 53.Kd5 a3 54.bxa3 Bf6 55.Rf5 Be7 56.Rf7 Ke8 57.Ke6 Kd8 58.Rxe7 Kc8 59.Re8+ Kb7 60.Nd6+ Kc7 61.Rc8# )
(  [Stockfish 250220 64 POPCNT] 80:M9 51...Be7 52.Nc7+ Kd7 53.Rf7 Kd6 54.Bc5+ Kxc5 55.Rxe7 Kc6 56.Nd5 Kb5 57.Rc7 Ka6 58.c4 a4 59.a3 Ka5 60.Ra7# )
(  [Stockfish 250220 64 POPCNT] 80:M9 51...Bh4 52.Bc5 Bf6 53.Nc7+ Kf7 54.Bd4 Kf8 55.Rxf6+ Ke7 56.Kd5 Kd7 57.Rf7+ Kc8 58.Kc6 Kd8 59.Rf8+ Ke7 60.Bc5# )
(  [Stockfish 250220 64 POPCNT] 80:M7 51...Kd7 52.Kd5 Be7 53.Rf7 Kd8 54.Ke6 Bb4 55.Be5 Kc8 56.Na7+ Kd8 57.Rc7 Be7 58.Rc8# )
52.Rh5 a3 
(  [Stockfish 250220 64 POPCNT] 91:M9 52...Be7 53.Rh6+ Kd7 54.Kd5 a3 55.bxa3 Bd8 56.Rh7+ Be7 57.Bf6 Kd8 58.Bxe7+ Kd7 59.Bf6+ Kc8 60.Kc6 Kb8 61.Rh8# )
(  [Stockfish 250220 64 POPCNT] 91:M9 52...a3 53.bxa3 Be7 54.Rh6+ Kd7 55.Kd5 Bd8 56.Rh7+ Be7 57.Bf6 Kd8 58.Bxe7+ Kd7 59.Bf6+ Kc8 60.Kc6 Kb8 61.Rh8# )
(  [Stockfish 250220 64 POPCNT] 91:M8 52...Ke7 53.Rh6 a3 54.Kd5 Kd7 55.Rh7+ Be7 56.Bf6 axb2 57.Rxe7+ Kc8 58.Kc6 Kd8 59.Re1+ Kc8 60.Re8# )
(  [Stockfish 250220 64 POPCNT] 91:M8 52...Ba5 53.Rh6+ Kd7 54.Kd5 Bd8 55.Rh7+ Be7 56.Bf6 Ke8 57.Bxe7 Kd7 58.Bf6+ Kc8 59.Kc6 Kb8 60.Rh8# )
53.bxa3 Be7 
(  [Stockfish 250220 64 POPCNT] 100:M8 53...Be7 54.Rh6+ Kd7 55.Kd5 Bd8 56.Rh7+ Be7 57.Bf6 Kd8 58.Bxe7+ Kd7 59.Bf6+ Kc8 60.Kc6 Kb8 61.Rh8# )
(  [Stockfish 250220 64 POPCNT] 100:M7 53...Kd7 54.Kd5 Be7 55.Rh7 Kd8 56.Ke6 Bf8 57.Rh8 Kc8 58.Nd6+ Kb8 59.Rxf8+ Kc7 60.Rc8# )
(  [Stockfish 250220 64 POPCNT] 100:M7 53...Bb6 54.Rh6+ Ke7 55.Rxb6 Kf7 56.Kf5 Ke7 57.Rb7+ Kf8 58.Ke6 Kg8 59.c3 Kf8 60.Rb8# )
(  [Stockfish 250220 64 POPCNT] 100:M7 53...Ba5 54.Rh6+ Kf7 55.Nd6+ Ke7 56.Kd5 Bd8 57.Bf6+ Kd7 58.Rh7+ Be7 59.Rxe7+ Kd8 60.Ra7# )
54.Rh6+ Kd7 
(  [Stockfish 250220 64 POPCNT] 106:M7 54...Kd7 55.Kd5 Bd8 56.Rh7+ Be7 57.Bf6 Kd8 58.Bxe7+ Kd7 59.Bf6+ Kc8 60.Kc6 Kb8 61.Rh8# )
(  [Stockfish 250220 64 POPCNT] 106:M6 54...Kf7 55.Kd5 Bg5 56.Nd6+ Kf8 57.Rh7 Bf4 58.Ke6 Be5 59.Bxe5 Kg8 60.Rh8# )
(  [Stockfish 250220 64 POPCNT] 105:M4 54...Bf6 55.Bxf6 Kf7 56.Kd5 Kg8 57.Ke6 Kf8 58.Rh8# )
55.Kd5 Bf8 
(  [Stockfish 250220 64 POPCNT] 104:M6 55...Bd8 56.Rh7+ Be7 57.Bf6 Kd8 58.Rxe7 Kc8 59.Kc6 Kd8 60.Re1+ Kc8 61.Re8# )
(  [Stockfish 250220 64 POPCNT] 104:M6 55...Bg5 56.Rh7+ Be7 57.Bf6 Kd8 58.Rxe7 Kc8 59.Kc6 Kd8 60.Re1+ Kc8 61.Re8# )
(  [Stockfish 250220 64 POPCNT] 103:M6 55...Bf8 56.Rh7+ Kd8 57.Bf6+ Be7 58.Rxe7 Kc8 59.Kc6 Kd8 60.Re1+ Kc8 61.Re8# )
(  [Stockfish 250220 64 POPCNT] 103:M5 55...Kd8 56.Ke6 Kc8 57.Kxe7 Kb8 58.Rb6+ Ka8 59.Nc7+ Ka7 60.Rb1# )
56.Rh7+ Kd8 
(  [Stockfish 250220 64 POPCNT] 190:M5 56...Kd8 57.Bf6+ Be7 58.Rxe7 Kc8 59.Kc6 Kd8 60.Re1+ Kc8 61.Re8# )
(  [Stockfish 250220 64 POPCNT] 190:M5 56...Be7 57.Bf6 Kd8 58.Rxe7 Kc8 59.Kc6 Kd8 60.Re1+ Kc8 61.Re8# )
(  [Stockfish 250220 64 POPCNT] 189:M4 56...Bg7 57.Bxg7 Kd8 58.Bf6+ Kc8 59.Kc6 Kb8 60.Rh8# )
(  [Stockfish 250220 64 POPCNT] 189:M4 56...Ke8 57.Nd6+ Bxd6 58.Kxd6 Kf8 59.Ke6 Kg8 60.Rh8# )
57.Bf6+ Be7 
(  [Stockfish 250220 64 POPCNT] 245:M4 57...Be7 58.Rxe7 Kc8 59.Kc6 Kd8 60.Re1+ Kc8 61.Re8# )
(  [Stockfish 250220 64 POPCNT] 245:M3 57...Kc8 58.Kc6 Kb8 59.Rh8 Ka8 60.Rxf8# )
(  [Stockfish 250220 64 POPCNT] 245:M1 57...Ke8 58.Nc7# )
58.Rxe7 Kc8 
(  [Stockfish 250220 64 POPCNT] 245:M3 58...Kc8 59.Kc6 Kd8 60.Re1+ Kc8 61.Re8# )
59.Rh7 Kb8 
(  [Stockfish 250220 64 POPCNT] 245:M2 59...Kb8 60.Kc6 Kc8 61.Rh8# )
60.Kc6 Kc8 
(  [Stockfish 250220 64 POPCNT] 245:M1 60...Kc8 61.Rh8# )
(  [Stockfish 250220 64 POPCNT] 245:M1 60...Ka8 61.Rh8# )
61.Rh8# *

Regards,

Zenmastur

You are right. Solution 3 (36.Rh8+ Kf7 37.Rf1+ Qf6) is a faster mate.

36.Rh8+ Kf7 37.Rf1+ Qf6 38.Bc4+ Rd5 39.Bxd5+ Be6 40.Bxe6+ Kxe6 41.Rxf6+ gxf6 42.Nxa7 Be1 43.Bxd4 Kf5 44.Kd1 Bb4 45.Rh6 Ke4 46.Rxf6 Ba5 47.Bb6 Ke5 48.Bxa5 Kxf6 49.c4 Ke6 50.c5 Kf7 51.c6 Kg6 52.c7 Kf5 53.c8Q+ Kf4 54.Kd2 Kg5 55.Qe6 Kh4 56.Qg6 Kh3 57.Ke3 Kh2 58.Kf2 Kh3 59.Qg3+ is mate in 24

36.Rh8+ Kf7 37.Rf1+ Qf6 38.Bc4+ Rd5 39.Bxd5+ Be6 40.Bxe6+ Kxe6 41.Rxf6+ gxf6 42.Nxa7

Code: Select all

-M17	42. ... Be1 43.Bxd4 Kf5 44.Kd1 Bb4 45.Rh6 Ke4 46.Rxf6 Ba5 47.Bb6 Ke5 48.Bxa5 Kxf6 49.c4 Ke6 50.c5 Kf7 51.c6 Kg6 52.c7 Kg5 53.c8Q Kf4 54.Qxa6 Kg5 55.Ke2 Kf5 56.Qh6 Ke4 57.Qg5 Kd4 58.Bc3+
-M17	42. ... Bb4 43.Bxd4 Bd6 44.Kd2 Bf4+ 45.Kd3 a5 46.c4 a4 47.Rf8 Ke7 48.Rxf6 Bc1 49.c5 a3 50.b4 Bg5 51.c6 Bxf6 52.c7 Bxd4 53.Kxd4 Ke6 54.c8Q+ Kf6 55.Qg4 Ke7 56.Ke5 Kf7 57.Nc6 Kf8 58.Kf6
-M17	42. ... Ba5 43.Bxd4 Bb4 44.Rh6 Kd5 45.Rxf6 Be7 46.Rg6 Bd8 47.Kd2 Ke4 48.Nc6 Bc7 49.Ke2 a5 50.c3 a4 51.Ne7 Kf4 52.Re6 Kg3 53.Be3 Kg2 54.Rg6+ Bg3 55.Nf5 a3 56.Rxg3+ Kh2 57.Kf3 axb2 58.Rg5
-M16	42. ... dxe3 43.bxc3 Kd6 44.Rh6 Ke6 45.Kd1 Ke5 46.Ke2 a5 47.c4 Kd4 48.Rxf6 Ke5 49.Rc6 Kd4 50.Nb5+ Ke4 51.Rd6 Kf5 52.c5 Kg4 53.c6 Kf4 54.c7 Ke5 55.Kxe3 Kf5 56.c8Q+ Kg5 57.Kf3 a4 58.Qg4+
-M16	42. ... Bxb2+ 43.Kxb2 dxe3 44.Kc3 e2 45.Re8+ Kd5 46.Rxe2 f5 47.Kd3 f4 48.Rf2 f3 49.Rxf3 Ke6 50.Kd4 a5 51.Rf4 a4 52.a3 Kd6 53.Re4 Kc7 54.Kc5 Kd8 55.Nb5 Kc8 56.Kc6 Kd8 57.Re5 Kc8 58.Re8+
-M15	42. ... Kd6 43.Bf4+ Ke6 44.bxc3 dxc3 45.a4 Kf5 46.Rh4 a5 47.Nc6 Ke6 48.Nxa5 Kd5 49.Nb3 Kc6 50.a5 Kb7 51.Rh6 Kc6 52.Rxf6+ Kb5 53.a6 Kc4 54.a7 Kb4 55.a8Q Kb5 56.Qc6+ Kb4 57.Bd6+
-M15	42. ... f5 43.Bd2 Bxd2+ 44.Kxd2 f4 45.Kd3 Kf7 46.Rh3 Ke6 47.Kxd4 Kf5 48.Rf3 a5 49.a4 Kg4 50.Ke4 Kg5 51.Rxf4 Kg6 52.Nc8 Kg5 53.Ne7 Kh5 54.Kf5 Kh6 55.Kf6 Kh5 56.Nc6 Kh6 57.Rh4+

alchemist888 · Post by **alchemist888** » Thu Mar 05, 2020 3:12 am

A lot of pages in this thread. Please tell me what was the conclusion, 1. g4 loses?

1.g4 opening is losing?

Re: 1.g4 opening is losing?

Re: 1.g4 opening is losing?

Re: 1.g4 opening is losing?

Re: 1.g4 opening is losing?

Re: 1.g4 opening is losing?

Re: 1.g4 opening is losing?

Re: 1.g4 opening is losing?

Re: 1.g4 opening is losing?

Re: 1.g4 opening is losing?

Re: 1.g4 opening is losing?