Calculate like a human robot
Solutions at the bottom
Introduction
puzzle 1
puzzle 2
puzzle 3
puzzle 4
puzzle 5
puzzle 6
puzzle 7
puzzle 8
puzzle 9
puzzle 10
puzzle 11
puzzle 12
puzzle 13
pzzle 14
puzzle 15
puzzle 16
puzzle 17
puzzle 18
puzzle 19
puzzle 20
Puzzle 21
puzzle 22
puzzle 23
puzzle 24
puzzle 25
puzzle 26
puzzle 27
puzzle 28
puzzle 29
puzzle 30
puzzle 31
puzzle 32
puzzle 33
puzzle 34
puzzle 35
puzzle 36
puzzle 37
puzzle 38
puzzle 39
puzzle 40
puzzle 41
puzzle 42
puzzle 43
puzzle 44
puzzle 45
puzzle 46
puzzle 47
puzzle 48
puzzle 49
puzzle 50
puzzle 51
puzzle 52
puzzle 53
puzzle 54
puzzle 55
puzzle 56
puzzle 57
puzzle 58
puzzle 59
Puzzle 60
Puzzle solutions
Puzzle 1, 1. Ke3 Kd6 2. Kf4 Ke6 3. g3
Puzzle 2, 1. h5 b4 2. h6 gxh6 3. g6 b3 4. g7 b2 5. Kc2 Ka2 6. g8=Q+
Puzzle 3, 1...f4 2. gxf4+ Kf5 3. Kc3 Kg4 4. Kd4 Kxh4 5. Kxe4 Kg4 6. Kd3 Kf3 7. e4 Kxf4 8. Kd4 h4 9. e5 Kf5
Puzzle 4, 1... f4 2. Kg5 Kxd4 3. Kxf4 c5 4. Kg3 c4 5. Kf2 Kd3
Puzzle 5, 1. d5 Kf5 2. Kd4 c3 3. Kxc3 Kg6 4. Kc4 Kf7 5. Kb5
Puzzle 6, 1... a5 2. Kc2 Kf7 3. Kd3 Kg6 4. h4 h5
Puzzle 7, 1. f5 a4 2. c6 bxc6 3. f6 c5+ 4. Kd3
Puzzle 8, 1. h3 Kd4 2. Kxg5 Ke3 3. Kg4 Ke4 4. Kxh4 Kf5 5. Kh5
Puzzle 9, 1... bxa4 2. bxa4 c4 3. Kd2 cxd3 4. Kxd3 Kc5 5. c4 Kb4
Puzzle 10, 1. a5 f5 2. gxf5 exf5 3. exf5 Kxf5 4. e4+
Puzzle 11, 1. cxb6 Kxb6 2. Ka4 Ka6 3. b3 Kb6 4. b4 axb4 5. Kxb4
Puzzle 12, 1. g4 Kb2 2. f5 gxf5 3. gxf5 a4 4. f6 a3 5. f7 a2 6. f8=Q a1=Q 7. Qf2+
Puzzle 13, 1. Ke3 exf4+ 2. Kxf4 fxe4 3. Kxe4 Kf6 4. Kf4
Puzzle 14, 1. f4 g5 2. fxg5 f4 3. h4 f3 4. Kd3 Kxc5 5. h5 f2 6. Ke2
Puzzle 15, 1. Kd3 Kd5 2. f3 Kc5 3. Ke4 Kxb5 4. Kxf4 Kc6 5. Ke5
Puzzle 16, 1... Kd4 2. Kc2 Ke3 3. b4 axb4 4. a5 d4 5. Kb2 d3 6. a6 d2 7. Kc2 Ke2
Puzzle 17, 1. gxh6+ Kxh6 2. Kxc7 f5 3. Kxd6 c4 4. bxc4 f4 5. Kc5 f3 6. d6 f2 7. d7
Puzzle 18, 1. Ke5 Kh5 2. f4 Kg4 3. Ke4 Kg3 4. f5 gxf5+ 5. Kxf5
Puzzle 19, 1. g5 f4 2. e4 f3 3. h5 f2 4. Ke2 Kxe4 5. g6
Puzzle 20, 1. b5 axb5 2. axb5 e3+ 3. Kf1 f3 4. b6 Kh4 5. b7
Puzzle 21, 1. c5 Kf5 2. c6 Ke6 3. Kc5 h4 4. Kb6 h3 5. c7 Kd7 6. Kb7 h2 7. c8=Q+
Puzzle 22, 1... Kd4 2. Ke2 e3 3. fxe3+ Ke4 4. Kd2 Kf3 5. e4 Kxe4 6. Ke2 Kd4
Puzzle 23, 1. Ka5 b4 2. Kxa6 Kxg5 3. Ka5 Kf4 4. Kxb4 Kxf3 5. a4 g5 6. a5 g4 7. a6 Kf2 8. a7 g3 9. a8=Q
Puzzle 24, 1. h4 Kh6 2. Kf6 gxh4 3. g5+ Kh7 4. Kf7 h3 5. g6+ Kh6 6. g7
Puzzle 25, 1... Kf4 2. Ke2 e4 3. fxe4 dxe4 4. c4 bxc4 5. b5 Ke5 6. b6 Kd6 7. b7 Kc7
Puzzle 26, 1. Kxe6 Kd2 2. f4 Ke3 3. g3 Kf2 4. Kxe7 Kg2 5. g4 Kh3 6. f5
Puzzle 27, 1... hxg4 2. fxg4 f5 3. Ke3 fxg4 4. Kf4 g3 5. Kxg3 Kf5
Puzzle 28, 1... f3 2. b4 e4 3. Kf4 Kd3 4. b5 e3 5. b6 e2 6. b7 e1=Q 7. b8=Q Qe4+
Puzzle 29, 1... Kd4 2. Ke2 Ke4 3. Kf2 h4 4. gxh4 Kxf4 5. h5 Kg5 6. Kf3 Kxh5 7. Kf4 Kg6
Puzzle 30, 1. h4 f5 2. Kf4 b5 3. Kg5 a5 4. Kxg6 b4 5. h5 a4 6. h6 b3 7. axb3 axb3 8. h7 b2 9. h8=Q
Puzzle 31, 1. h5 b4 2. h6 gxh6 3. g6 b3 4. g7 b2 5. Kc2 Ka2 6. g8=Q+
Puzzle 32, 1... Kf3 2. Kd3 d5 3. c4 e4+ 4. Kd4 Kxf2 5. c5 e3 6. c6 e2 7. c7 e1=Q 8. c8=Q Qe4+ 9. Kc3 d4+
Puzzle 33, 1... h5 2. a5 Kd7 3. a6 Kc7 4. a7 Kb7 5. Kc4 h4
Puzzle 34, 1. Ke4 Kf6 2. Kd4 h5 3. Kc5 h4 4. Kd6 h3 5. e7 h2 6. e8=Q
Puzzle 35, 1. Ke4 Kd6 2. Kd4 b5 3. axb5 a4 4. Kc4 a3 5. Kb3 Kc5 6. Kxa3
Puzzle 36, 1. Ke3 f4+ 2. gxf4+ Kf5 3. c4 g3 4. Kf3 g2 5. Kxg2 Kxf4 6. Kf2
Puzzle 37, 1. g4 h6 2. Kf5 Kd5 3. e4+ Kd4 4. e5 Kd5 5. e6 Kd6 6. Kg6 Kxe6 7. Kxg7
Puzzle 38, 1. Kd6 f5 2. c5 f4 3. c6 f3 4. c7 f2 5. c8=Q f1=Q 6. Qe8+
Puzzle 39, 1. g5 Kd2 2. Kf6 Ke3 3. Kxf7 Kxf4 4. Kxg6 e5 5. Kxh5 e4 6. g6 e3 7. g7 e2 8. g8=Q e1=Q 9. Qg5+ Kf3 10. Qg4+ Kf2 11. Qh4+
Puzzle 40, 1. bxc4 a5 2. gxh5 a4 3. a3 Kxf5 4. c5 Ke5 5. c6 Kd6 6. Kxe4
Puzzle 41, 1. b6 axb6 2. a6 c5+ 3. Ke4 f3 4. Ke3 g3 5. hxg3 fxg2 6. Kf2 c4 7. a7
Puzzle 42, 1. Kxa6 f5 2. Kb5 f4 3. gxf4 g4 4. a6 g3 5. a7 g2 6. a8=Q g1=Q 7. Qe4+
Puzzle 43, 1... Kc5 2. Kd2 a4 3. Kc2 d3+ 4. Kxd3 axb3 5. Kc3 b2 6. Kxb2 Kxc4
Puzzle 44, 1. Kb5 Kc7 2. Ka6 Kb8 3. a4 Ka8 4. a5 bxa5 5. Kxa5 Kb7 6. c5 dxc5 7. Kb5
Puzzle 45, 1. fxe4 fxe4 2. Kd2 Kb4 3. Ke3 Kxa4 4. Kxe4 Kb5 5. Kf5
Puzzle 46, 1. Kxg3 Kf5 2. Kh4 b6 3. b5 a5 4. h6 Kg6 5. Kg4 Kxh6 6. Kf5 Kg7 7. Ke6
Puzzle 47, 1. Ke3 Ka3 2. g5 c4 3. Kd4 Kb3 4. g6 c3 5. g7 c2 6. g8=Q+
Puzzle 48, 1... Kd5 2. a4 h5 3. a5 a6 4. b5 axb5 5. a6 Kc6 6. a7 Kb7
Puzzle 49, 1... axb4+ 2. Kxb4 b6 3. Ka3 Ka5 4. Kb3 b5 5. axb5 Kxb5 6. Kc3 c5
Puzzle 50, 1... f4+ 2. gxf4+ gxf4+ 3. Kf3 Kd4 4. Kxf4 Kc3 5. Ke5 Kxb3 6. Kd5 a4
Puzzle 51, 1... Ke4 2. Kb4 Kf3 3. Kxb5 Kxg3 4. a4 g5 5. a5 gxf4 6. a6 f3
Puzzle 52, 1... h5 2. Ka1 d4 3. Kb1 d3 4. Kc1 Kxa2 5. Kd2 Kb2 6. Kxd3 Kc1 7. Ke2 Kc2 8. Ke3 Kd1
Puzzle 53, 1... b5 2. axb5 Kxb5 3. Kxd5 a4 4. c4+ Ka6 5. Ke6 a3 6. d5 a2 7. d6 a1=Q
Puzzle 54, 1... h6 2. Kf5 Kxd5 3. Kg6 Kd4 4. Kxh6 Ke3 5. Kxg5 Kxf3 6. h4 e4 7. h5 e3 8. h6 e2 9. h7 e1=Q
Puzzle 55, 1. Kxa5 f5 2. Ka6 g5 3. fxg5 hxg5 4. Kxa7 f4 5. b6 f3 6. b7 f2 7. b8=Q f1=Q
Puzzle 56, 1. f5 Kc5 2. f6 Kd6 3. Kf5 a4 4. Kg6 a3 5. f7 Ke7 6. Kg7 a2 7. f8=Q+
Puzzle 57, 1. h5 gxh5 2. f5 Kc5 3. f6 Kd6 4. Kf5 h4 5. Kg6 h3 6. f7 Ke7 7. Kg7 h2 8. f8=Q+
Puzzle 58, 1... fxg3 2. fxg3 Kd4 3. g4 hxg4 4. h5 Ke5 5. h6 Kf6
Puzzle 59, 1. Kxg4 e5 2. h4 Kc4 3. Kf5 Kd5 4. h5 e4 5. Kf4
Puzzle 60, 1. bxc5 bxc5 2. h4