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Questions tagged [endgame]

Questions relating to the final stages of a game of chess, when only few pieces are left on the board.

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5 votes
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Practical play in KRPvKQ central pseudo-fortresses?

A rook and a pawn sometimes draw against a queen, if a proper fortress can be set up. These are possible to learn to defend, and it's also possible to learn how to attack these with a queen when the ...
SE - stop firing the good guys's user avatar
3 votes
0 answers
34 views

How do I get a text response from 4kit Nalimov endgame tablebase

I am trying to get a simple text response from 4kit Nalimov endgame tablebase, using an URL and asking for the answer to a FEN string.
Michael Brown's user avatar
3 votes
0 answers
254 views

I have a code in Python which should compute fully optimal moves in an endgame for Black and White player, but it seems that k is playing suboptimally

In this example "'fen': '7Q/8/8/6k1/2K5/8/8/8 w - -', 'moves_to_mate': 9" should be "'fen': '7Q/8/8/6k1/2K5/8/8/8 w - -', 'moves_to_mate': 11" according to Stock-Fish. EDIT The ...
user2925716's user avatar
3 votes
0 answers
120 views

Can previous and continuing research on N-piece tablebases be used toward human theory of chess?

This follows another questions here: What is the status for EIGHT piece endgame tablebases? My answer there was appropriately removed as being question in reaction to that question, well in light of ...
dbdb's user avatar
  • 162
3 votes
0 answers
136 views

Analysis of positions with only one king on the board?

Endgame positions with just one king on the board may be very rich. Has any analysis of simple positions done? Maybe even tablebases for small numbers of pieces? There are some existing problems with ...
Laska's user avatar
  • 12.2k
2 votes
0 answers
119 views

King and three knights vs king․

Is there any recorded official game in history where the king and three knights play against the lone king in the endgame? I know it can be a very rare case where in practice both knights stay until ...
Arsen Vardanyan's user avatar
2 votes
0 answers
95 views

KBN vs K tablebase for 10x10 board

Where can I get the tablebase for king + bishop + knight versus king mate on 10x10 board?
max's user avatar
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2 votes
0 answers
60 views

Endgame move frequency data?

If you want to know what moves humans play in a certain positions, any database with enough games in it can give you the answer. This obviously only works for opening positions, as the chance of any ...
SE - stop firing the good guys's user avatar
1 vote
0 answers
146 views

Can you force stalemate with KB/K?

Since the practical answer, pending the old suggestions to rate stalemate different, is "Who cares?", I doubt "official" tablebases exist. (Since winning the KNN/KP endgame depends ...
Hauke Reddmann's user avatar
1 vote
0 answers
106 views

Which theoretically drawn endings have high difference in material count?

Ending of King+Queen vs. King+Pawn is usually draw when pawn is on seventh rank of rook or bishop file, given that defending king is in front of it and attacking king is not close enough to force ...
Matija Sirk's user avatar
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1 vote
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Mating with B+N+handicap

Elsewhere there was a discussion on "pass chess" (instead of making a move you can pass...if you don't happen to stand in check!). There are three sensible rule variants of pass chess: on/...
Hauke Reddmann's user avatar
1 vote
0 answers
66 views

Long tablebase wins in tournament praxis

I very much assume that KBB/KN endgames already occurred often enough in OTB play, and I also bet the B side always played on for a win (regardless whether this was after the computer proved it was a ...
Hauke Reddmann's user avatar
0 votes
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29 views

Training endgames with "royal non-king" pieces

For endgame training with kids, I often let them chase a knight with a queen until "mate". (The poor is thought to be royal.) The same could be done for almost any material constellation, e....
Hauke Reddmann's user avatar