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1967 All Soviet Union Mathematical Olympiad
091
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1967 All Soviet Union Mathematical Olympiad
Problems
(1)
ASU 091 All Soviet Union MO 1967 499 white castles and 1 black king
Source:
6/20/2019
"KING-THE SUICIDER" Given a chess-board
1000
×
1000
1000\times 1000
1000
×
1000
,
499
499
499
white castles and a black king. Prove that it does not matter neither the initial situation nor the way white plays, but the king can always enter under the check in a finite number of moves.
combinatorics
Chessboard