# Questions tagged [solving]

For questions related to the solving, solvability, or proved solutions to chess and chess variants.

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### Variant where White cannot lose?

I was pondering an asymmetrical variant where White's king is just a regular piece that moves like a normal king, but can be captured without consequence (and hence check for White does not exist). ...
• 3,057
7k views

### What is the deepest Stockfish evaluation of the standard initial position that has ever been done?

Letting Stockfish (14+ NNUE) run for several minutes with lichess' analysis tool on the initial position of a standard chess board lets it reach depths beyond 30 moves, I suppose letting it run for ...
• 906
136 views

### Non-Tactical Puzzles

Its surprisingly hard to find chess puzzles where the solution is not necessarily tactic resulting in checkmate or a heavy win of material. The problem with these tactical puzzles is that they do not ...
7k views

### Is there a mathematical theorem that you can use to win a chess endgame?

Have mathematicians created any theorem that determines the outcome of a endgame? If so, how could it be used to win a specific endgame?
231 views

### What do you think will happen when chess gets solved? [closed]

When some ultra strong computer discovers the perfect game of chess, will chess as a game die?
• 9
1 vote
131 views

### Is it computationally feasible to find a board with proven outcome, reachable in 2 plies?

As is well known, neither the 0-ply game, the starting state, nor 1-ply games, all of white's first moves, have rigorously proven outcomes. Not even first moves for white considered very bad (1. g4) ...
1 vote
153 views

### Knight Moves Around the Board [duplicate]

It is well known that a lone knight can move all around the board covering each square once and only once. Is this possible when the lone knight starts only on certain squares ? How many unique ...
• 409
297 views

### What is the solution to single-check chess?

Single-check chess is a variant where the first person to give check wins. There is a website that claims it has been solved, with white winning in four moves; however, I cannot find the moves ...
10k views

### Is it possible Alpha Zero will eventually solve chess?

I googled this question and ended up here. From previous questions, it seems Alpha Zero has not solved chess yet and if it does it will take a very long time. Nonetheless, it may be possible one day. ...
• 193
211 views

### Is there a forced win in CastleChess?

Is there a forced win for White or Black in the chess variant CastleChess? The rules are explained in this post on an obscure blog named “Cinquante signes”, although it is originally from ...
1k views

### (Unbalanced) Double-Move chess - can white force a win?

I'm not talking about Marseillais chess (which is similar, but rules are added to reduce the advantage of the white), which is sometimes also called "balanced double-move chess". In a Double-...
• 322
431 views

### How big is the advantage for white in the "back-rank-game"?

Consider a chess variant in which normal chess rules apply, with one exception. The player that is able to bring a piece or a pawn onto the opponent’s back rank, which would be the 8th rank for White ...
• 3,389
1 vote
322 views

### If there was a perfect play from both sides, but each player was allowed to do 2 moves every time, would white win?

Imagine a game where players are allowed 2 moves instead of one. If there were perfect play from both sides, would White win?
• 35
2k views

### Can 5D chess be solved?

An interesting new variant of chess has emerged, showing that chess will always be fresh-5D chess. I mostly play the 5x5 version, but the positions do not rocket out of control like in the standard ...
• 646
4k views

Is it possible to weakly solve Atomic Chess as a win for White? I've analysed a few lines good for White, but I am not sure about a general solution.
56k views

### Is chess a solved game?

Chess is a zero-sum game of limited decisions. The number of possible moves at any given point, and the number of possible states of the board, are all finite. Tic-Tac-Toe, is one of the easiest ...
• 581
930 views

### How to weakly solve Tiger Hunt, Atlantis Chess and Peasants' Revolt

Tiger Hunt is a chess variant where an entire army without a queen fight against a royal amazon (tiger, queen+knight). I believe it is certainly a win for the army just like Marahaja and Sepoys. I ...
• 385
2k views

### How to solve atomic chess?

Since losing chess is almost solved, I believe that the next step towards solving chess should be atomic chess, which has less forced moves than losing chess but still a lot more than regular chess. ...
• 385
812 views

### Is the result in mini-chess known with perfect play?

I do not know, if "mini-chess" is the official name of the game I am talking about. In mini-chess, the players only start with the pawns (In particular, there are no kings!) The players ...
• 3,389
3k views

### Has loser chess been solved?

Loser chess has a benefit of sorts. There are many turns where moves are forced. So my question is, has it been solved? I'd say that the move tree is much smaller than chess. If not: How much would ...
• 3,271