hallo
it is not fair
it have not
solution
i liked but no time you know...
love...
Guarini's Problem
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Can we move the kings or the pawns?
Can we move the kings or the pawns?
Moving the kings is a good idea, but it's not necessary to solve it.
Sweet. Those hours sacrificed to the knight endgame gods actually pay off. 
Very nice solution. Once you realize how to solve the shorter problem of rotating the pattern 90 degrees, the rest is easy.
Math solucion, graph´s
Love the puzzle and the solution. I have a webpage that briefly discusses the 4-Knight's Move puzzle at http://www.danthomasson.com/4-knights-puzzle.html
Switch the White Knights with the Black Knights without jumping over the Wall-Pawns.