### Here are some chess problems composed by O. Blumenthal. White mates in 3.

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

a)
8/2Q5/8/1k6/5B2/3K4/8/8 w - - 0 1
[ Bg5 if Ka4 Qc4+ or if Ka6 Bd8 ]

b)
8/8/2Q5/4k3/8/6N1/4K1N1/8 w - - 0 1
[ Kd1 Kd4 Qb5 ]

c)
Q7/8/8/4K3/8/8/5N2/Nk6 w - - 0 1
[ Qg2 if Kxa1 Nd3 ]

d)
8/8/7k/8/5PBN/8/4K3/7R w - - 0 1
[ Be6 if Kg7 Nf5+ ]

e)
8/8/N1Bkp3/8/8/4KQ2/8/8 w - - 0 1
[ Kf4 Ke7 Ke5 ]

O. Blumenthal Problems, Part II. White mates in 3.
a)
Bohemia, 1905
8/8/8/5p2/3K4/6RR/7P/7k w - - 0 1
[ Ke3 f4+ Kf2 ]

b)
6Q1/8/8/8/p2K4/p7/Bk6/8 w - - 0 1
[ Qg1 Kxa2 Qc1 ]

c)
8/2K5/8/NkN5/1P6/2B5/8/8 w - - 0 1
[ Bb2 Kxb4 Kc6 ]

d)
8/n4p2/8/5K1k/Qn1p4/8/8/8 w - - 0 1
[ Qb3 d3 Qb2 ]

e)
3B4/8/1K5p/8/8/1Q4N1/2Pk4/8 w - - 0 1
[ Bh4 Kd1 Ne2 ]

O. Blumenthal Problems, Part III. White mates in 3.
a)
4B3/8/8/1K6/2P3N1/1Q6/6n1/2k5 w - - 0 1
[ Ka6 if Ne1 or Kd2 or Nf4 Ba4 ]

b)
8/4N3/6N1/1kP5/7P/Q7/4K3/8 w - - 0 1
[ Nh8 Kc4 Nf7 ]

c)
8/8/8/8/4N3/7P/Kn2Q2b/7k w - - 0 1
[ Nd2 if Nd3 Qf3+ or if Bc7 Nf3 ]

d)
K7/1R5p/7P/6k1/8/8/8/7Q w - - 0 1
[ Qe4 if Kxh6 Qg2 or if Kh5 Rg7 ]

e)
k5N1/rR3K2/8/8/8/8/8/7Q w - - 0 1
[ Nf6 if Rxb7+ Nd7 or if Ra1 Rb1+ ]

O. Blumenthal Problems, Part IV. White mates in 3.
a)
8/8/5p2/4P3/4B3/6k1/2Q2N2/1K6 w - - 0 1
[ Bf5 if Kf4 Nh3+ w/Qc5# or if Kf3 Nd3 ]

b)
8/8/3pB1Q1/3Nk3/1P6/8/8/7K w - - 0 1
[ Bg8 Kd4 Bh7 Kxd5 Qe4# ]

c)
5Q2/8/4K3/8/5P2/1pB5/N7/1k6 w - - 0 1
[ Qc5 if Kxa2 Qf2+ or if Kc2 Qf5+ ]

d)
Saale Zeitung, 1902?
2Q5/6R1/3k2p1/4N1b1/8/1K6/8/8 w - - 0 1
[ Re7 if Kxe7 Qd7+ or if Kd5 Qc4+ ]

e)
8/8/8/8/2P5/1K1N4/2Qpk3/3N4 w - - 0 1
[ Ne1 Kxe1 Qd3 ]

f)
8/2Kp4/8/3k1P2/3P4/3Q4/8/2B5 w - - 0 1
[ Be3 d6 Kc8 ]

g)
8/R1Np4/2Nk4/7R/5K2/8/8/8 w - - 0 1
[ Rha5 if Kxc6 Nd5 or if dxc6 Ne8+ ]
Thx Gideon!

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