Just for a bit of fun, here is a selection of puzzles. Click on image to begin the puzzzle!

26041 Very easy

31548 Normal

37503 Difficult

45129 Easy

47555 Normal

50039 Very Difficult

60035 Easy

66523 Normal

81011 Normal

86430 Difficult

87014 Very difficult

90036 Normal

91029 Difficult

304012 Normal

150124 Easy

55027 Normal

43183 Very difficult