Perplexing Sudoku-by5 Logic Puzzles (Vol 1) 
 Chapter 5: Twenty Perplexing (DiffLev 51-53) Sudoku-by5 Puzzles (numbers 41-60) 
 
-  Step-by-step instructions for solving  Puzzle 41, (268/369)   Diff: 51/999.6979.9532.2D54.4963.5458.9771.1132.3655+
 -  Step-by-step instructions for solving  Puzzle 42, (263/369)   Diff: 52/9645.3376.7664.4A11.3358.9999.711C.2335+
 -  Step-by-step instructions for solving  Puzzle 43, (269/369)   Diff: 52/9975.3367.6763.8577.9962.7799.3142.21B3+
 -  Step-by-step instructions for solving  Puzzle 44, (270/369)   Diff: 52/9995.6454.8766.4269.9935.7995.1B25.6246+
 -  Step-by-step instructions for solving  Puzzle 45, (271/369)   Diff: 52/9945.5433.1242.D449.42B3.5547.7878.2688+
 -  Step-by-step instructions for solving  Puzzle 46, (272/369)   Diff: 52/971C.3321.1224.2368.9423.3343.2459.9999+
 -  Step-by-step instructions for solving  Puzzle 47, (273/369)   Diff: 52/9974.7334.D121.D324.4461.4644.4679.9998+
 -  Step-by-step instructions for solving  Puzzle 48, (274/369)   Diff: 52/9999.31D5.8679.5444.1C33.6785.1139.9999+
 -  Step-by-step instructions for solving  Puzzle 49, (274/369)   Diff: 52/9743.6623.5211.12C4.5334.6485.6964.444A+
 -  Step-by-step instructions for solving  Puzzle 50, (277/369)   Diff: 52/9774.7546.5566.5442.574D.6799.9875.9957+
 -  Step-by-step instructions for solving  Puzzle 51, (265/369)   Diff: 53/9.9357.6699.8325.6968.7935.9711.5995.3455+
 -  Step-by-step instructions for solving  Puzzle 52, (267/369)   Diff: 53/9.8556.2B45.9956.345D.2257.5546.3795.3233+
 -  Step-by-step instructions for solving  Puzzle 53, (268/369)   Diff: 53/9.5111.431B.1233.4338.7999.8656.7522.3B11+
 -  Step-by-step instructions for solving  Puzzle 54, (269/369)   Diff: 53/9.9667.6499.91B4.4446.9972.542D.3621.2436+
 -  Step-by-step instructions for solving  Puzzle 55, (269/369)   Diff: 53/9.7633.2326.4411.3676.7548.799B.1131.11B3+
 -  Step-by-step instructions for solving  Puzzle 56, (269/369)   Diff: 53/9.7531.1123.3567.6789.5621.3311.2112.2332+
 -  Step-by-step instructions for solving  Puzzle 57, (274/369)   Diff: 53/9.4331.2211.11B2.5563.2368.4B33.1113.2C34+
 -  Step-by-step instructions for solving  Puzzle 58, (275/369)   Diff: 53/9.9998.6554.4425.7544.A135.9833.4354.2C12+
 -  Step-by-step instructions for solving  Puzzle 59, (275/369)   Diff: 53/9.8854.1B2A.1212.1212.4466.7699.7999.9865+
 -  Step-by-step instructions for solving  Puzzle 60, (275/369)   Diff: 53/9.3253.221D.7976.3447.9677.98D2.3599.8554+