Chessqueen wrote: ↑Thu Apr 15, 2021 9:53 pm
Sorry the 1st position Black is to move first, but White has to Mate, NOT Black
[d]QN4n1/6r1/3k4/8/b2K4/8/8/8 b - - 0 1
This is not a mate for White, this is a cursed win. Also, you're asking to find a mate from the losing point of view, which doesn't make any sense at all...
Also, forget about applying the 50 moves rule,
This is not how chess works.
simply tell your computer to find the Mate. This another hard position, Black to move and mate, Sorry
[d]8/r6n/8/8/5k2/3K4/7N/3b3Q b - - 0 1
Even assuming someone actually wants to run the given position (which I doubt) with 50-MR disabled, are you so misinformed that you think a strong hardware configuration can make an engine run at depths above 1000 and announce mate ? I'm not even sure any 3000+ Elo engine can reach this depth code-wise (e.g. Stash stops after depth 240). To me this looks like outright trolling.
My slow computer intel i7 4770 3.40 GHz found both mates after 90 minutes the 1st in 547 moves and the other position in 545 Moves
Do NOT worry and be happy, we all live a short life
Chessqueen wrote: ↑Fri Apr 16, 2021 12:00 am
My slow computer intel i7 4770 3.40 GHz found both mates after 90 minutes the 1st in 547 moves and the other position in 545 Moves
Proof ? Unless you explain which engine you used to solve it, which specific configuration, the analysis output, and how you are sure the mate distance is minimal, I'll think you're just regurgitating Syzygy DTZ numbers.
Chessqueen wrote: ↑Fri Apr 16, 2021 12:00 am
My slow computer intel i7 4770 3.40 GHz found both mates after 90 minutes the 1st in 547 moves and the other position in 545 Moves
Proof ? Unless you explain which engine you used to solve it, which specific configuration, the analysis output, and how you are sure the mate distance is minimal, I'll think you're just regurgitating Syzygy DTZ numbers.
Simply let stockfish13 NNUE Autoplay it, NOT all positions have to be analyzed ==>
Do NOT worry and be happy, we all live a short life
Chessqueen wrote: ↑Fri Apr 16, 2021 12:00 am
My slow computer intel i7 4770 3.40 GHz found both mates after 90 minutes the 1st in 547 moves and the other position in 545 Moves
Proof ? Unless you explain which engine you used to solve it, which specific configuration, the analysis output, and how you are sure the mate distance is minimal, I'll think you're just regurgitating Syzygy DTZ numbers.
Simply let stockfish13 NNUE Autoplay it, NOT all positions have to be analyzed ==>
This is not a proof. At best it gives some evidence. Because you cannot prove that there isn't a way to delay the mate for the losing side by playing other moves. If you had saved the mate scores in hash and had done a backward analysis, showing a full PV from the root position accompanied by its mate score, I would have been convinced. Except you can't do that with SF, because it cannot analyze more than 246 plies ahead, and it cannot show mates in more than 123. And you cannot do that with any engine, because a proof-tree for a mate in 547 with 7 pieces on the board is close to impossible to build. I'll stop answering this thread.
Chessqueen wrote: ↑Fri Apr 16, 2021 12:00 am
My slow computer intel i7 4770 3.40 GHz found both mates after 90 minutes the 1st in 547 moves and the other position in 545 Moves
Proof ? Unless you explain which engine you used to solve it, which specific configuration, the analysis output, and how you are sure the mate distance is minimal, I'll think you're just regurgitating Syzygy DTZ numbers.
Simply let stockfish13 NNUE Autoplay it, NOT all positions have to be analyzed ==>
This is not a proof. At best it gives some evidence. Because you cannot prove that there isn't a way to delay the mate for the losing side by playing other moves. If you had saved the mate scores in hash and had done a backward analysis, showing a full PV from the root position accompanied by its mate score, I would have been convinced. Except you can't do that with SF, because it cannot analyze more than 246 plies ahead, and it cannot show mates in more than 123. And you cannot do that with any engine, because a proof-tree for a mate in 547 with 7 pieces on the board is close to impossible to build. I'll stop answering this thread.
I never mentioned that my computer solved it using analyze mode, I said that I let stockfish play it out under autoplay under Arena 3.5.1 Game ==> selected Demo and gave it 90 minutes for the entire game, and if the game stopped after x amount of moves I copied the fen and started from that point on and repeated if necessary
[Event "Computer chess game"]
[Site "MININT-UB2PIMJ"]
[Date "2021.04.14"]
[Round "1"]
[White "Stockfish 13"]
[Black "Stockfish 13"]
[Result "1-0"]
[BlackElo "3475"]
[Time "07:09:11"]
[WhiteElo "3475"]
[TimeControl "5400+1"]
[SetUp "1"]
[FEN "1n1k4/6Q1/5KP1/8/7b/1r6/8/8 w - - 0 1"]
[Termination "unterminated"][PlyCount "4"]
[WhiteType "program"]
[BlackType "program"]
