Update: I just realised that you can click the hint button on the bottom left to reveal the solution. So anyway enjoy the solution if you need it!
The most beautiful puzzle that my engine can never solve
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Weird. The chess.com engine saw mate coming in less than 1 second. And it didn't put a step wrong while on the road. I solved it only after a few retries on the first move.
Nevertheless, it is a beautiful puzzle. Never expected the multiple underpromotions of this version. I made one myself with a similar finish and 1 underpromotion:
4...Kc1
Why must Black play this?
Stockfish 11, on my smart phone with 5 men tablebase access.
In less than 1 second, Stockfish think draw, 0.00
Just 1.22 second Stockfish knows it is tablebase winning.
About 20 seconds= SF announce Mate 20
At 60 seconds= SF announce Mate 17.
rapidflashlight wrote:
I don't see the position...
Are you on mobile or desktop? It definitely loads on a computer but there may be compatibility issues with a mobile device
drmrboss wrote:
Stockfish 11, on my smart phone with 5 men tablebase access.
In less than 1 second, Stockfish think draw, 0.00
Just 1.22 second Stockfish knows it is tablebase winning.
About 20 seconds= SF announce Mate 20
At 60 seconds= SF announce Mate 17.
I guess you all have very strong engines ^^. I just tested on chess.com's max analysis and I guess it runs without a tablebase, making the win beyond recognition from the starting position
I thought that Platinum and Diamond members had the ability to analyze at high depth with multi core support? That's literally the only reason why I might consider a membership.
Ellipsoul wrote:
drmrboss wrote:
Stockfish 11, on my smart phone with 5 men tablebase access.
In less than 1 second, Stockfish think draw, 0.00
Just 1.22 second Stockfish knows it is tablebase winning.
About 20 seconds= SF announce Mate 20
At 60 seconds= SF announce Mate 17.
I guess you all have very strong engines ^^. I just tested on chess.com's max analysis and I guess it runs without a tablebase, making the win beyond recognition from the starting position
The authour of Droidfish put default cpu=1,
Today smartphone has 4 or 8 cores already. I put 8 cores for droidfish. 5 men Tablebases is around 900 MB and worth downloading. May be have a look on my topic about setting up droidfish properly ( including how to set up opening books etc)
https://www.chess.com/forum/view/general/how-to-set-up-your-droidfish-android-stockfish-properly
can you please name the composer of this beautiful study? took me 30 minutes to solve this.
Aug 22, 2020
0
#14
Droidfish running on 8 threads on my phone finds the mate in 20 in just under 30 sec.
I made a puzzle and computer can solve it but you will see the end position.
Now white can nothing doing with his bishop and any engine says its better for white but white can't win and because of the 50-move rule its a draw (https://en.wikipedia.org/wiki/Fifty-move_rule) you can check it with your engine
Oh ok I don't no about this enine then try this position
who is it to move?
pfren wrote:
destroyer8470 έγραψε:
who is it to move?
White, of course. If it was Black, then he would have enough time to pick the e6 pawn, and then white should have to deliver a perpetual (or donate his Queen because of the stalemate) to avoid loss.
Then isn't it just a draw?
Yes the solution was find but what says the engine?
pfren wrote:
destroyer8470 έγραψε:
pfren wrote:
destroyer8470 έγραψε:
who is it to move?
White, of course. If it was Black, then he would have enough time to pick the e6 pawn, and then white should have to deliver a perpetual (or donate his Queen because of the stalemate) to avoid loss.
Then isn't it just a draw?
No. White can only move the queen, and Black the king. The king will be cornered, and Black will be forced to play ..Qb8-b7.
Ah yes I see now, I forgot black wasn't in stalemate!
I guess if enough people see this post I will update this with the full solution in a later comment. Have fun! (p.s. I've never tried embedding a puzzle, I hope it worked)