Easy Puzzle #33 - One Possible Solution Approach…
	NB:  There is only one final solution to this Sudoku puzzle…
	A	B	C	D	E	F	G	H	I
1
2	AA			BB			CC				Reference to 3x3 Blocks AA, BB & CC
3
4
5	DD			EE			FF				Reference to 3x3 Blocks DD, EE & FF
6
7
8	GG			HH			II				Reference to 3x3 Blocks GG, HH & II
9
	A	B	C	D	E	F	G	H	I
1		1	3	6	4	8	2	7			Easy Puzzle #33 - November 2, 2005
2	7								5		Original puzzle as published © joe-ks.com
3	6				9				3
4		8		2		5		6
5		7			8			5
6			2				8
7			1				9		6
8	2	9	5	8		4	7	3	1
9					3
	A	B	C	D	E	F	G	H	I
1	5	1	3	6	4	8	2	7	9		Step 1: Complete Row 1: need #s 5 & 9…
2	7								5		#5 can't go in Cell I1 (cf #5 in Column I @ I2), so
3	6				9				3		#5 MUST go in Cell A1, & therefore #9 MUST go in Cell I1
4		8		2		5		6
5		7			8			5			Step 2: #5 is now in Columns A & C: #5 MUST go in Cell B6…
6		5	2				8	9
7			1				9		6		Step 3: #9 is now in Columns G & I: #9 MUST go in Cell H6…
8	2	9	5	8		4	7	3	1
9					3
	A	B	C	D	E	F	G	H	I
1	5	1	3	6	4	8	2	7	9		Step 4: Complete Row 8: #6 MUST go in Cell E8…
2	7								5
3	6			5	9				3		Step 5: #5 is in Rows 1 & 2: #5 MUST go in Cell D3
4		8		2		5		6			(#5 in Column F @ F4 excludes use of Cell F3)
5		7			8			5	2
6		5	2				8	9			Step 6: #2 is in Rows 4 & 6: #2 MUST go in Cell I5
7			1				9		6		(#2 in Column G @ G1 excludes use of Cell G5)
8	2	9	5	8	6	4	7	3	1
9					3
	A	B	C	D	E	F	G	H	I
1	5	1	3	6	4	8	2	7	9		Step 7: #7 is in Columns A & B: #7 MUST go in Cell C9…
2	7								5
3	6			5	9				3		Step 8: #5 is in Columns C & F: #5 MUST go in Cell E7…
4		8		2		5		6
5		7			8			5	2		Step 9: #5 is in Columns H & I: #5 MUST go in Cell G9…
6		5	2				8	9
7			1		5		9		6
8	2	9	5	8	6	4	7	3	1
9			7		3		5
	A	B	C	D	E	F	G	H	I
1	5	1	3	6	4	8	2	7	9		Step10: #6 is in Rows 1 & 3: #6 MUST go in Cell G2
2	7						6		5		(#6 in Column H @ H4 excludes use of Cell H3)
3	6			5	9				3
4		8		2		5		6			Step 11: #6 is in Rows 7 & 8: #6 MUST go in Cell B9
5		7			8			5	2		(#6 in Column A @ A3 excludes use of Cell A9)
6		5	2				8	9
7			1		5		9		6
8	2	9	5	8	6	4	7	3	1
9		6	7		3		5
	A	B	C	D	E	F	G	H	I
1	5	1	3	6	4	8	2	7	9		Step 12: #6 is in Columns A & B: #6 MUST go in Cell C5
2	7						6		5		(#6 in Row 4 @ H4 excludes use of Cell C4)
3	6			5	9				3
4		8		2		5		6			Step 13: #6 is in Columns D & E: #6 MUST go in Cell F6
5		7	6		8			5	2		(#6 from Step 12 @ C5 excludes use of Cell F5)
6		5	2			6	8	9
7			1		5		9		6
8	2	9	5	8	6	4	7	3	1
9		6	7		3		5
	A	B	C	D	E	F	G	H	I
1	5	1	3	6	4	8	2	7	9		Step 14: #9 is in Rows 1 & 3: #9 MUST go in Cell C2
2	7		9				6		5		(#9 in Column B @ B8 excludes use of Cell B2)
3	6			5	9	7			3
4		8		2		5		6
5		7	6		8			5	2		Step 15: #7 is in Rows 1 & 2: #7 MUST go in Cell F3...
6		5	2			6	8	9
7			1		5		9		6
8	2	9	5	8	6	4	7	3	1
9		6	7		3		5
	A	B	C	D	E	F	G	H	I
1	5	1	3	6	4	8	2	7	9		Step 16: Block HH needs #7: #7 MUST go in Cell D7
2	7		9				6	8	5		(#7 in Row 9 @ C9 excludes use of Cells D9 & F9, &
3	6		8	5	9	7			3		#7 in Column F @ F3 further exludes use of Cell F7)
4		8		2		5		6
5		7	6		8			5	2		Step 17: Block AA needs #8: #8 MUST go in Cell C3
6		5	2			6	8	9			(#8 in Column B @ B4 excludes use of Cells B2 & B3)
7			1	7	5		9		6
8	2	9	5	8	6	4	7	3	1		Step 18: #8 is now in Rows 1 & 3: #8 MUSt go in Cell H2...
9		6	7		3		5
	A	B	C	D	E	F	G	H	I
1	5	1	3	6	4	8	2	7	9		Step 19: Complete Column C: #4 MUST go in Cell C4…
2	7		9		2		6	8	5
3	6	2	8	5	9	7			3		Step 20: Block BB needs #2: #2 MUST go in Cell E2
4		8	4	2		5		6			(#2 in Column D excludes use of Cell D2, and since #2
5		7	6		8			5	2		can't go in Block HH's Column E (E7,E8,E9 taken), #2
6		5	2			6	8	9			MUST go in Block HH in Column F - therefore #2 MUST go
7			1	7	5		9		6		in Column E in Block BB…)
8	2	9	5	8	6	4	7	3	1
9		6	7		3		5				Step 21: #2 is now in Rows 1 & 2: #2 MUST go in Cell B3…
	A	B	C	D	E	F	G	H	I
1	5	1	3	6	4	8	2	7	9		Step 22: Complete Block AA: #4 MUST go in Cell B2…
2	7	4	9		2		6	8	5
3	6	2	8	5	9	7			3		Step 23: Complete Column B: #3 MUST go in Cell B7…
4		8	4	2		5		6
5		7	6		8			5	2		Step 24: Row 7 need #8: #8 MUST go in Cell A7
6		5	2			6	8	9			#8 in Column F excludes use of Cell F7, &
7	8	3	1	7	5		9		6		#8 in Column H @ H2 excludes use of Cell H7)
8	2