- Given moves leads to the fastest checkmate possible in the current board position.
- 7
Learning Opportunities
This puzzle can be solved using the following concepts. Practice using these concepts and improve your skills.
Statement
Here, we consider Chess endgames with only black king, white king, and white rook. Your goal, as the white player, is to checkmate the black king as quickly as possible.
The Goal
For a given initial state of the game, your goal is to compute moves of the white player leading to the fastest checkmate. You need to consider an opponent, who may try to prolong play and achieve a draw when possible.
Rules
The initial game state is described by the position of each piece: white king, white rook, and black king, formatted as
The goal of this puzzle is to, in each turn, provide a move leading to quickest checkmate, according to the Chess rules. Each move should be formatted as
After each white move, black's reply will be given in the same format.
Victory Conditions
Loss Conditions
- Given sequence of moves does not lead to a fastest checkmate.
- Given move is illegal.
- Given answer is not properly formatted.
- Response time exceeds the time limit.
Detailed rules
- If the black player makes a suboptimal move and a quicker checkmate becomes possible, you should find the faster checkmate.
- Given board state is always a valid Chess game position.
- You can hide showing legal moves in the settings panel (
)..
Related puzzles
Game Input
Initial input
A single line containing space-separated strings, whiteKing whiteRook blackKing positions in column-row format, e.g.
Input for the following turns
A single line containing a string opponentMove wih the opponent move encoded as from-to in column-row format, e.g.
Output each turn
A single line containing a moves in a1h8 format.
Constraints
1 ≤ depth of the quickest checkmate solution ≤ 13 Response time for first turn ≤
Response time for the following turns ≤
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