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Sudoku - 2027 Puzzle-a-Day Planner — Solution #2

Difficulty: HARD Clues: 27 Hardest: NAKED TRIPLE 55 steps
0 / 55
NAKED SINGLE #1 R7C1 = 1 (only candidate)
NAKED SINGLE #2 R8C1 = 8 (only candidate)
NAKED SINGLE #3 R8C2 = 6 (only candidate)
NAKED SINGLE #4 R8C3 = 7 (only candidate)
NAKED SINGLE #5 R9C2 = 5 (only candidate)
NAKED SINGLE #6 R6C2 = 2 (only candidate)
NAKED SINGLE #7 R4C2 = 8 (only candidate)
NAKED SINGLE #8 R3C2 = 1 (only candidate)
NAKED SINGLE #9 R4C3 = 3 (only candidate)
NAKED SINGLE #10 R6C3 = 5 (only candidate)
NAKED SINGLE #11 R2C3 = 8 (only candidate)
NAKED SINGLE #12 R1C3 = 6 (only candidate)
NAKED SINGLE #13 R5C1 = 9 (only candidate)
HIDDEN SINGLE #14 R5C8 = 5 (only place for 5 in Row 5)
HIDDEN SINGLE #15 R5C5 = 6 (only place for 6 in Row 5)
HIDDEN SINGLE #16 R9C9 = 6 (only place for 6 in Row 9)
HIDDEN SINGLE #17 R3C8 = 8 (only place for 8 in Col 8)
HIDDEN SINGLE #18 R7C9 = 2 (only place for 2 in Col 9)
HIDDEN SINGLE #19 R9C8 = 4 (only place for 4 in Box 9)
NAKED SINGLE #20 R2C8 = 1 (only candidate)
NAKED SINGLE #21 R2C9 = 4 (only candidate)
NAKED SINGLE #22 R2C1 = 5 (only candidate)
NAKED SINGLE #23 R3C1 = 3 (only candidate)
NAKED SINGLE #24 R1C1 = 4 (only candidate)
HIDDEN SINGLE #25 R4C9 = 1 (only place for 1 in Col 9)
NAKED TRIPLE #26 R2C5, R4C5, R7C5 share {2,7,9}; eliminate from 6 cell(s)
NAKED SINGLE #27 R3C5 = 5 (only candidate)
NAKED SINGLE #28 R3C7 = 7 (only candidate)
NAKED SINGLE #29 R1C9 = 3 (only candidate)
NAKED SINGLE #30 R1C7 = 5 (only candidate)
NAKED SINGLE #31 R5C9 = 7 (only candidate)
NAKED SINGLE #32 R4C8 = 9 (only candidate)
NAKED SINGLE #33 R5C6 = 8 (only candidate)
NAKED SINGLE #34 R5C4 = 3 (only candidate)
NAKED SINGLE #35 R6C7 = 3 (only candidate)
NAKED SINGLE #36 R7C8 = 7 (only candidate)
NAKED SINGLE #37 R7C5 = 9 (only candidate)
NAKED SINGLE #38 R2C5 = 2 (only candidate)
NAKED SINGLE #39 R2C4 = 9 (only candidate)
NAKED SINGLE #40 R4C5 = 7 (only candidate)
NAKED SINGLE #41 R4C6 = 2 (only candidate)
NAKED SINGLE #42 R6C4 = 1 (only candidate)
NAKED SINGLE #43 R6C5 = 4 (only candidate)
NAKED SINGLE #44 R6C6 = 9 (only candidate)
NAKED SINGLE #45 R8C4 = 2 (only candidate)
NAKED SINGLE #46 R8C5 = 1 (only candidate)
NAKED SINGLE #47 R1C5 = 8 (only candidate)
NAKED SINGLE #48 R1C4 = 7 (only candidate)
NAKED SINGLE #49 R1C6 = 1 (only candidate)
NAKED SINGLE #50 R8C6 = 4 (only candidate)
NAKED SINGLE #51 R8C7 = 9 (only candidate)
NAKED SINGLE #52 R9C4 = 8 (only candidate)
NAKED SINGLE #53 R9C5 = 3 (only candidate)
NAKED SINGLE #54 R9C6 = 7 (only candidate)
NAKED SINGLE #55 R9C7 = 1 (only candidate)