2 questions about chessboard's symmetry
Posted: Wed Dec 16, 2015 4:21 pm
Hello everyone,
I would be grateful if you could give me answers to my questions:
1. Can I use only vertical/horizontal symmetry (i.e. restricting king to the a1-d1-d4-a4 square) in the pawnless endgame? I ask this question, because in early work they allowed black king to stay in the a1-h1-e4-d4 trapezium. I wonder what was the reason of that choice.
2. If there are pawns in the endgame, one of them may be put in the a2-d2-d7-a7 rectangle (as Ken Thompson did). Does it mean, that the other pawns can be put only in a2-h2-h7-a7 rectangle instead of whole chessboard?
Thank you in advance.
I would be grateful if you could give me answers to my questions:
1. Can I use only vertical/horizontal symmetry (i.e. restricting king to the a1-d1-d4-a4 square) in the pawnless endgame? I ask this question, because in early work they allowed black king to stay in the a1-h1-e4-d4 trapezium. I wonder what was the reason of that choice.
2. If there are pawns in the endgame, one of them may be put in the a2-d2-d7-a7 rectangle (as Ken Thompson did). Does it mean, that the other pawns can be put only in a2-h2-h7-a7 rectangle instead of whole chessboard?
Thank you in advance.