36 votes
Accepted

Is it possible to compose a checkmate with king and any three minor pieces against bare king in the center of the board?

It is indeed impossible to construct a mating net with king + 3 minor pieces against a lone king in the center of the board. A mating net would require that all 9 squares in the 3x3 block which ...
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  • 2,441
14 votes
Accepted

Term for checkmate where every participating piece attacks exactly one square around king

As a problemist, I can assure you that the term as such does not exist in problem language. Bohemian school did only know three concepts: pure mate, economic mate (all pieces - but not necessarily ...
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14 votes
Accepted

What is the longest checkmate problem a human has composed?

The longest known checkmate problem composed by a human is dependent on a few criteria that are generally used by chess composers. Namely, it is a question of whether or not you want the problem to ...
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10 votes
Accepted

Position where promotion to bishop is the only move?

There are numerous chess problems, whether a checkmating one or an endgame study, that feature certain promotions as a necessity to win. Stalemate is the long-known reason behind doing so. Here is a ...
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8 votes

Position where promotion to bishop is the only move?

It's easy to come up with positions where promoting to knight leads to insufficient material but promoting to bishop doesn't. This one, for instance: [FEN "N5q1/7P/8/8/8/7K/8/7k w - - 0 1"]
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  • 3,256
7 votes

Does FIDE give titles to chess composers?

They used to, but now the titling process is handled by the World Federation for Chess Composition. Here's a link to some of the titles: https://en.wikipedia.org/wiki/...
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7 votes
Accepted

What is a “dual” in chess problems, such as the Babson task?

A dual is an alternate solution, other than the intended one, after the first move of a problem or study. If it happens on the first move, the problem or study is called cooked instead. dual ...
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  • 23.9k
6 votes

Does FIDE give titles to chess composers?

The answer used to be Yes, via the Permanent Commission for Chess Compositions; in 2010 the Commission became the independent World Federation for Chess Composition, but "both organisations are ...
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6 votes

How to learn basics of composition?

Thanks for the great links above. Here are some more: Great intro tutorials from a fine composer, Peter Wong. Incomplete but still very useful multilingual glossary of the keywords underpinning "Die ...
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  • 9,458
5 votes

Positions in which only a single long sequence of correct moves avoids forced checkmate sequences

To start off, with such a requirement, the sequence would have to end in a draw. Well, more than most likely that is. There is a similar concept from another question called the "Nunn Convention.&...
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5 votes

Positions in which only a single long sequence of correct moves avoids forced checkmate sequences

The sequence can be arbitrarily long if we allow repeated moves, e.g. [Title "Every other White move allows mate in 1"] [FEN "2B5/8/R7/4rp2/2P5/1PkP4/2p6/2K6 w - - 0 0"] 1. Re6 ...
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5 votes

Position where promotion to bishop is the only move?

First I wonder what is the most economical presentation of bishop underpromotion. [FEN "5n2/6Pk/4N3/7K/8/8/8/8 w - - 0 1"] White to play and win It's mate in 6 (with a dual) gxf8=B! Kh8 2....
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  • 9,458
3 votes
Accepted

Attempting to create a retraction problem

Could white have just played Bg4 from somewhere without capture? Black’s prior move was Ke5-e6. This can be fixed by a shifting wNg3 to e3 and wBd4 to g3 in its place. This stops other cooks where ...
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  • 9,458
3 votes

About how to compose retrograde analysis problems

See my answer to About retrograde analysis. The Retro Corner is not about composing. but it has lots of easy and hard examples with detailed solutions, comments, etc.
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  • 229
2 votes

Position where promotion to bishop is the only move?

I didn't look at existing answers yet; so maybe this was already posted. I tried and fairly quickly came up with: [FEN "1r5K/2P5/8/k1N5/8/8/8/8 w - - 0 1"] My line of thought was: if ...
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2 votes

Position where promotion to bishop is the only move?

Another addendum. Very strictly speaking, none of the positions (except the "dead" utilization by Laska) fulfil the specifications of the OP, since promotion should be the only move. But ...
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2 votes

Positions in which only a single long sequence of correct moves avoids forced checkmate sequences

The moves themselves are technically forced, so that might be the concept to which you are referring (forced moves).
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2 votes

Positions in which only a single long sequence of correct moves avoids forced checkmate sequences

depth=2 (+1) I found this position, White has to make two moves (e3, e4) to avoid getting checkmated by Blacks pawn promotion and then has to move to h6 to avoid a draw by stalemate. After these three ...
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  • 586
2 votes
Accepted

Concerning a chess problem generating program

AFAIK, there aren't programs that generate chess problems On the other hand, there are several well known programs to verify chess problems (even with fairy chess conditions). The main reason is that ...
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2 votes

Problem: Find White's second-to-last move

The simplest version of the problem is 'cooked' - there are three distinct solutions: a) setup - White king on B2, White pawn on F5, Black pawn on E7 --> 1) B2-B1+ E7-E5 2) F5xE5ep b) setup - ...
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  • 31
1 vote

Attempting to create a retraction problem

First attempt. If the White bishop is removed then it is stalemate which suggests that Black had a piece on g4 and White's last move was Bxg4++. He could retract this and play hxg4 stalemate instead. ...
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