Impossible 3 knights puzzle

Chess Puzzle 46

A best endgame puzzle in chess. Famous and beautiful.
Improve your chess | Chess Puzzle 46 To Online Chess Puzzles 31-60

Chess Puzzle 46: White to move and win
White to move and win
[See answer at the bottom]

Puzzle 46 Solution Hints
Impossible puzzle, impossible and unbelievable. Do you believe that the king and 2 knights can win chess endgame against the king and a knight? Sometimes it is possible! This chess puzzle is the case… Move correctly the left knight first… and enjoy a forced mate in 4… You may try to solve this puzzle on a real chess board.

Puzzle 46 Data
1. Author: Berger, Johann Nepomuk (1845-1933); Austria.
2. Year:    1921

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# Note: See the Puzzle Answer below #

Chess Puzzle 46

The Puzzle Answer
1. Nf7!      Nd6
[Now the Black king has no legal moves]
[1… Nd6 is sacrifice and attempt to free the Black king]
[Under correct defense, 2 knights may not mate the lonely king]
2. Nh6+     Kh8
[2… Kh8 is the only legal move for Black]
3. Ng5       N~
4. Ngf7#    1-0
[Just mate in 4]

Endgames: Puzzles 1-30    Puzzles 31-60

Impossible 3 Knights Puzzle. Mate in 4. Find how to checkmate. Move the left knight first. Author: Berger, Johann Nepomuk. Year: 1921.

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