10396 Players currently online!
Man vs. Machine - good luck!
Turn-based games at any time!
Vote for the best move to win!
Do you have what it takes?
Sharpen your tactical vision!
Get advice and game insights!
Learn from top players & pros!
View millions of master games!
Your virtual chess coach!
Perfect your opening moves!
Test your skills vs. computer!
Find the right private coach!
Can you solve it each day?
Bring it all together!
Beginners, start here!
Make friends & play team games!
News from the world of chess!
Search all Chess.com members!
Find local clubs & events!
Who's the best of your friends?
Read what members are saying!
Does anyone know where I can find the method for mating with a king and three knights against a lone king?
Also, is there any reason why in the 6-man endgame tablebases (ie. 4 pieces plus the kings) there is no K+4N v K? I know it's a crazy situaiton, but it is certainly possible, and *might* occur. It would be easy to just say "sac one of the knights and play from there" but that does not really give the solution. (Solved in post #2)
On Nalimov, which is here:
there is this information: *** NEW! All 6-men tables online (except 5 vs. 1). ***
Since K+4N v K is 5 vs 1 it won't work. You would probably need to ask the author(s) as to why 5 vs 1 is not included. Maybe it is hard to program, who knows?
Of course! I read that, (I use the same site for my EGTB searches), I clearly just forgot how to count to 5. Are you aware if the 5v1 EGTB has been generated, and if so is there somewhere to view it on the web?
5 vs. 1 is not included in the tablebase because any decent engine can calculate a win with its usual algorithm for any of those position. (Fritz 8 had no trouble with K + 4N vs. K).
Good to know. Thanks.
No I don't know if the 5v1 EGTB has been generated. I looked a bit around on the Internet and just got the impression that it is something that takes a huge amount of calculation. It is probably a big task, but I guess it will be accomplished sooner or later.
The trouble is not with how long it takes to calculate. The calculation of the 5 vs. 1 positions would be considerably shorter than 4 vs. 2 and 3 vs. 3 because one side is going to mate fairly quickly in 5 vs. 1.
The point is that as it is the tablebase is already large, 1.2 terabytes. So it is worthwhile to cut out positions that can be won some other way.
But surely the aim of EGTB generation is that eventually you will encapsulate all possible board positions, thus solving the game?
No, I don't think that's the aim at all.
what do people mean when they call a win "clean"?
by tkbunny a few minutes ago
Why Wont nobody help??
by Max-is a few minutes ago
Nigel Short: Women's brains not chess brains
by trysts 2 minutes ago
beccoming a staff member.
by RonaldJosephCote 3 minutes ago
eliminating blunders without the wait?
by kleelof 3 minutes ago
How fast can you +800pts?
by yyoochess 4 minutes ago
What's your favorite excuse for why you lost game of chess?
by DarklingSalmon 4 minutes ago
Are you actively trying to improve your chess and don't go to a chess club?
by now_and_zen 14 minutes ago
want to get insulted for free ?
by tkbunny 18 minutes ago
by RonaldJosephCote 23 minutes ago
Why Join | Chess Topics |
Help & Support |
© 2015 Chess.com
• Chess - English
We are working hard to make Chess.com available in over 70 languages. Check back over the year as we develop the technology to add more, and we will try our best to notify you when your language is ready for translating!