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📥 Download the PGN of these chess puzzles from this blog-post –
In this video lesson, GM Igor Smirnov will show you a funny chess puzzle that forced FIDE to change the rules of chess.
Tim Krabbé composed this puzzle in the year 1972, which was meant to be a mate in 3. It uses a loophole in the rules of the game that was present during those days. This eventually forced FIDE to change the rules. To be specific, it used the loophole called vertical castling.
Back then, the definition of castling was “It moves the king 2 squares towards the rook, while the rook takes the square that the king has crossed”. And because of this loophole, the castling rule was then updated such that the king and the rook are in the same rank (so that only horizontal castling is possible).
00:00 Funny Chess Puzzle
00:08 Composition by Tim Krabbé in 1972
00:24 Can you solve this puzzle?
01:16 FIDE changed the rules after this
02:00 (Vertical) long castling?!
03:00 Loophole in chess rules
03:10 Can you find the mate in 2?
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