Dave McCooey Fairy endgames with 3 pieces on 8x8 board:
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||||| Longest Wins for the Strong Side (WHITE) |||||
||||| (strong side has 3 pieces, weak side has 0 pieces) |||||
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KWWFvK is mate in 46 moves.
KWFFvK is mate in either 39 moves or 50 moves
(longer mate for both F on the same color).