Three Chess Mazes for you to try. If unfamiliar with the term
then the explanation of what a Chess Maze is provided.
An appearance of a new guy 'The RHP Demon'
He will ask me questions and I'll answer them.
(an experiment really but anybody got a question?)
Finishes as usual with the RHP 'Hall of Doom'
Blog Post 354
Originally posted by greenpawn34I liked the Chess Mazes - they were fun solving; not too hard. Except for the Bishop one. That one is troubling me.[b][/b]
Three Chess Mazes for you to try. If unfamiliar with the term
then the explanation of what a Chess Maze is provided.
An appearance of a new guy 'The RHP Demon'
He will ask me questions and I'll answer them.
(an experiment really but anybody got a question?)
Finishes as usual with the RHP 'Hall of Doom'
Blog Post 354
First, it seems something is missing in the stipulation; Bg7, Bxf8+ is too easy, so we must not be allowed to capture anything.
Second, it is impossible for e1 to be the target square. Where did the Bishop come from to reach that square? Obviously not from any squares that already checked the King. The only other square left is h4. So where did it come from to reach h4? The only unguarded square is e7, which attacks the King, and would have solved the problem already.
Edit: the Rook should be on f7. This also resolves the "capturing" issue.
I particularly liked the lemondrop game and HEPKAT's swindle. There's a reasonable explanation of how a tree pruning algorithm works on Wikipedia, but essentially if the algorithm finds a move one of whose replies leads to checkmate, or at least a provably worse position than some other option, there isn't any point in evaluating the other replies.
https://en.wikipedia.org/wiki/Alpha-beta_pruning
Hi Deep Thought,
I thought I'd stay away from the heavy techy side of things.
I'm up to my neck when I talk about ply. Any deeper and I drown.
(and I use to sell these things for a living - 1985-1992)
Hi Big Dog,
Thanks. I've corrected the Bishop one on the blog..
As a reward and you enjoy them here are three slightly harder ones (correct ones)
Recap for anyone just who just happened along.
In all three positions just check the Black King without being captured.
The Black pieces do not move unless they can take the piece.
You are not allowed ot take a Black piece.
Originally posted by greenpawn34Thanks, GP. Those are fun.
Hi Deep Thought,
I thought I'd stay away from the heavy techy side of things.
I'm up to my neck when I talk about ply. Any deeper and I drown.
(and I use to sell these things for a living - 1985-1992)
Hi Big Dog,
Thanks. I've corrected the Bishop one on the blog..
As a reward and you enjoy them here are three slightly harder ones (correct ...[text shortened]... /2b3p1/4n2k/8/r7/4qb2/8/5R2 w - - 0 1[/fen]
[fen]4r3/6q1/8/3b4/3b4/6k1/5N1n/8 w - - 0 1[/fen]
The Rook ones are the most interesting. It seems like they can be made to do more convoluted changes of direction, along with visits to out-of-the-way squares that offer a tiny bit of maneuvering space.
Hi Big Dog,
I think you are now ready for a King Maze.
The rules slightly differ.
Only the White King moves. Black never moves.
The White King CAN capture a piece or a pawn..
Usual rules apply, the King must never move into check.
Moving only the King checkmate Black. (5 moves)
Moving only the King checkmate Black. (7 moves)
Originally posted by greenpawn34#1:
Hi Big Dog,
I think you are now ready for a King Maze.
The rules slightly differ.
Only the White King moves. Black never moves.
The White King CAN capture a piece or a pawn..
Usual rules apply, the King must never move into check.
Moving only the King checkmate Black. (5 moves)
[fen]4K2B/6b1/8/8/8/2kP4/1R6/8 w - - 0 1[/fen]
Moving o ...[text shortened]... y the King checkmate Black. (7 moves)
[fen]5R1R/1B1pbbKp/8/3p4/8/6p1/6k1/6r1 w - - 0 1[/fen]
#2:
Originally posted by greenpawn34Hi greenpawn,
Before I start, Black is helping White to achieve this.
Black does not help white, I think the answer is
Hi BigDogg,
I liked that, nice theme.
Originally posted by greenpawn34Glad you liked it ... feel free to use it in a blog.
Thanks deep thought, I saw the only King moves, I was just making sure.
Hi Big Dog,
This is actually an excellent composition and will blogged (with your permission.)
It's 100 moves. Perfect.. One could use to show how to visualise 100 moves ahead.
We are very lucky to have you.
[pgn]
[FEN "4B1kb/2Pp3N/1Pb1p3/1P2p2K/1PPp1PN1/1RpQP1B1/3p1P2/R ...[text shortened]... tempo then it would be White to play here.} 97... Kg7 98. Kxc3 Kg8+ 99. Kxd2 Kg7 100. Ke1 [/pgn]
