Questions tagged [problems]

Chess problems consist of a board position and a task. Most ask for a line of play that mates black in a set amount of moves, or a combination that results in a winning position. Many other types exist, including, but not limited to, construction tasks for various positions and proof games that have numerous goals, selfmates, helpmates, and retrograde analysis. Tournaments and championships exist for composing of original problems and for speed-solving.

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24
votes
5answers
5k views

Longest sequence of mutually forced moves

In this position, the black move 1. ... Qc3 results in two consecutive forced moves, Kxc3 and Ke7: 2rkr3/2p5/2q5/8/8/8/3KP3/3R4 b - - 0 1 1... Qc3 2. Kxc3 Ke7 What is the longest sequence of ...
13
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5answers
3k views

Is it possible to have a double self-smothered stalemate?

I came up with this rather amusing and bizarre stalemate where Black stalemates itself by self-smothering. [FEN "8/8/8/8/8/3p4/pp6/krb1K3 b - - 0 1"] 1...d2+?? 2. Kd1 The peculiar feature of ...
10
votes
7answers
4k views

Is there a computer program that generates quality chess problems?

Is there a chess engine that automatically generates quality chess problems. For example I will input 3 - it produces a mate in 3 problem. But the problem shouldn't be so obvious that one can solve in ...
13
votes
3answers
2k views

Maximum possible movement in a turn

I've read that for any position, there are on average approximately 35 possible moves. But what's the maximum number of possible moves for a position?
3
votes
1answer
274 views

Help needed with a chess dilemma

How can I get a checkmate in three moves? [FEN "8/2R5/1B1k4/2R5/3N4/1K6/3p4/8 w - - 0 1"]
2
votes
1answer
759 views

A chess problem question: Why is this the solution?

[FEN "5B2/3p1n2/R2p4/1P1NRBQ1/1KPkrb2/1p6/2Pp1Pn1/4r3 w - - 0 1"] 1. Nc7! Rxe5 (1... Nxg5) (1... d1=Q) 2.c3# What would make you play Nc7? This results in checkmate in 2 if, as the ...
2
votes
1answer
418 views

What is happening in this problem?

I recently solved a problem chess.com and it is below. What I don't understand is that why black moved its rook to h8 (1...Rh8). I think that black's position would have been better if it was ...
14
votes
3answers
3k views

Shortest possible game with 18 queens?

The selected answer to this question shows a game in which all 16 pawns promote to queens so that there is a total of 18 queens on the board. It takes 80 moves... What is the shortest sequence of ...
16
votes
1answer
15k views

Maximum number of queens possible

I was thinking about what the maximum number of queens can be on the board after only legal moves. The theoretical upper bound would be 18, the original 2 queens plus 16 promoted pawns. However, to ...
7
votes
3answers
722 views

Problem: reconstruct the game

In the following position, each side has made exactly 4 moves (8 in total). [fen "rnbqkbnr/pp3ppp/2p1p3/8/4P3/8/PPPP1PPP/RNBQK1NR w KQkq - 0 1"] I need to find what these moves were.
11
votes
4answers
696 views

Studies that have been cooked by computers

A study is unlike a regular chess problem. Instead of "mate in 3" (for instance), a study's instructions are something like "White to draw" (for instance). What this means is to find a line of play ...
6
votes
1answer
731 views

Make checkmate with pawns without promotion

I have a chess puzzle here: [FEN "7k/8/8/4KPPP/8/8/8/8 - - - 0 0 "] Can White force mate without promotion? And if such exist, where can I find some more chess puzzles like this, which feature ...
17
votes
3answers
2k views

THE longest problem ever (much longer than the mere 549 mover...)

The "Fireside Book of Chess" by I. Chernev and F. Reinfeld includes the following diagram [fen "3nk3/3NN3/3PP3/3BB3/3PP3/3PP3/3PP3/2RQKR2 w - - 0 1"] Composed by J.N. Babson for ...
13
votes
3answers
646 views

How to learn basics of composition?

There are a few resources in the web for problem composers. Problem is the usually assume you are already part of the community. As a result one has to wander around to find out what is a grasshopper, ...
10
votes
2answers
278 views

What makes a contemporary chess problem decent?

One can set up some pieces and concoct a situation that has, say, a mate in 3 (yes, I know it is not straightforward, but if you sit for a few hours you can do it). Such problem would probably not be ...
6
votes
3answers
259 views

What is the best continuation in this problem-h4 or Qd8?

In the given diagram, I have two best ways to continue for white, which is the better option out of these two and why? [FEN "2Q5/p1P2pkp/1p2p3/5p2/3P4/5P1P/P2q2PK/8 w - - 0 1 "] 1. Qd8 Qf4+ (1. h4 ...
6
votes
3answers
325 views

Online resources for medieval Persian chess games or problems?

I am looking for any collection of chess games of al-Suli or anyone medieval scholar's composition of games. Any resources would be appreciated.
9
votes
1answer
863 views

Self-Solving Chess Problems

Are there any longer "problems" like this, which is white to move and mate in 6? (Namely, where one is actually forced to achieve the "goal".)
10
votes
3answers
708 views

Chess problem - don't understand the solution

Black to move: [fen "4rbk1/pp3pp1/1nq4p/8/1PP5/P3N1P1/Q2BrP1P/3R1RK1 b - - 0 1"] I've tried to solve this chess problem - black to move, find the best move. I couldn't work it out so I checked the ...
13
votes
2answers
416 views

Giving moves as odds, what's the least number of moves by White which forces checkmate by the time it's Black's turn?

If one player (Black) gives another player (White) odds of x moves, stipulating that White must not move any man beyond his fourth rank until Black has made one move, what's the smallest value for "x" ...
20
votes
2answers
989 views

What is the origin of this breakthrough combination?

If you've spent enough time in the world of chess, it's not unlikely that you've come across the following position, with white to move and win, or an essentially identical one. You'll see plenty of ...

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