Here are some chess problems composed by F. Dubbe.
White Mates in 3.

Solutions are between the brackets under each puzzle.
Drag your cursor from one bracket to the other.

a)
8/8/5Q2/8/6p1/8/3K2pk/6N1 w - - 0 1
[ Qb6 if g3 Nf3+ or if Kh1 (or Kg3) Ne2(+) ]

b)
1B6/1k6/6N1/K3R3/8/8/B7/8 w - - 0 1
[ Nf8 if Kxb8 (or Ka8) Kb6 or if Kc6 Bd5+ or if Kc8 Re8+ ]

c)
8/2N5/2p4Q/2k1N3/8/8/2K5/8 w - - 0 1
[ Nc4 if Kxc4 Qd6 or if Kb4 (or Kd4) Qe3(+) ]

d)
2R5/5b2/8/3k4/5B2/4R3/8/K4B2 w - - 0 1
[ Re1 if Kd4 Be5+ or if B any Bc4+ ]

e)
8/4Q3/1k2P3/8/1P3K2/8/8/3N4 w - - 0 1
[ Nb2 if Ka6 Qc7 or if Kc6 Qa7 ]


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