Puzzles for Juniors

Puzzles C and D

Puzzle C. White to play and win.   Puzzle D. White to play and win    

Puzzles A and B

Puzzle 1 Easy White to play has several good moves.  Which is the best?   Puzzle 2 Harder White to play has a very good position. How can he make it even better? Try to work out White and Black’s next two moves each.