Easy Puzzle #29 - One Possible Solution Approach…
	NB:  There is only one final solution to this Sudoku puzzle…
	Rules: Place a number from 1-9 in each empty cell so that each row, each column AND each 3x3 block contains all the numbers from 1-9.
	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		4		2		9	5		3		Easy Puzzle #29 - October 29, 2005
2		5			1				2		Original puzzle as published © joe-ks.com
3			6	5	7
4	4	1				3		8	9
5			3	1		7	2
6	7			8				3	4
7						2	6
8	6				5			2	8
9	3		9	7				1
	A	B	C	D	E	F	G	H	I
1		4		2		9	5		3		Step 1: #4 is in Rows 4 & 6: #4 MUST go in Cell E5...
2		5			1				2
3			6	5	7
4	4	1				3		8	9		Step 2: #2 is in Rows 7 & 8: #2 MUST go in Cell B9...
5			3	1	4	7	2
6	7			8				3	4
7						2	6
8	6				5			2	8
9	3	2	9	7				1
	A	B	C	D	E	F	G	H	I
1		4		2		9	5		3		Step 3: #3 is in Columns H & I: #3 MUST go in Cell G8
2		5		3	1				2		(#3 in Row 9 @ A9 excludes use of Cell G9)
3		3	6	5	7
4	4	1				3		8	9		Step 4: #3 is now in Columns A & C: #3 MUST go in Cell B3…
5			3	1	4	7	2
6	7			8				3	4		Step 5: #3 is now in Rows 1 & 3: #3 MUST go in Cell D2
7						2	6				(#3 in Column F @ F4 excludes use of Cell F2)
8	6				5		3	2	8
9	3	2	9	7				1
	A	B	C	D	E	F	G	H	I
1		4		2		9	5		3		Step 6: #3 is now in Columns D & F: #3 MUST go in Cell E7
2		5		3	1				2		(#3 in Row 9 @ A9 excludes use of Cell E9)
3		3	6	5	7
4	4	1				3		8	9
5			3	1	4	7	2				Step 7: Block II needs #9: #9 MUST go in Cell H7
6	7			8				3	4		(#9 in Row 9 @ C9 excludes use of Cells G9 & I9, &
7					3	2	6	9			#9 in Column I @ I4 excludes use of Cell I7)
8	6				5		3	2	8
9	3	2	9	7				1
	A	B	C	D	E	F	G	H	I
1		4		2		9	5		3		Step 8: Block II needs #4: #4 MUST go in Cell G9
2		5		3	1				2		(#4 in Column I @ I6 excludes use of Cells I7 & I9)
3		3	6	5	7
4	4	1				3		8	9		Step 9: #9 is in Rows 7 & 9: #9 MUST go in Cell D8
5			3	1	4	7	2				(#9 in Column F @ F1 excludes use of Cell F8)
6	7			8				3	4
7					3	2	6	9
8	6			9	5		3	2	8
9	3	2	9	7			4	1
	A	B	C	D	E	F	G	H	I
1		4		2		9	5		3		Step 10: Complete Block II: need #s 5 & 7…
2		5		3	1				2		#7 can't go in Cell I9 (cf #7 in Row 9 @ D9), so
3		3	6	5	7						#7 MUST go in Cell I7, & therefore #5 MUST go in Cell I9
4	4	1				3		8	9
5			3	1	4	7	2	5			Step 11: #5 is now in Columns G & I: #5 MUST go in Cell H5
6	7			8				3	4
7					3	2	6	9	7
8	6			9	5		3	2	8
9	3	2	9	7			4	1	5
	A	B	C	D	E	F	G	H	I
1		4		2		9	5		3		Step 12: #1 is in Rows 4 & 5: #1 MUST go in Cell G6…
2		5		3	1				2
3		3	6	5	7						Step 13: Block HH needs #1: #1 MUST go in Cell F8
4	4	1				3		8	9		(#1 in Column D @ D5 excludes use of Cell D7, &
5			3	1	4	7	2	5			#1 in Row 9 @ H9 excludes use of Cells E9 & F9)
6	7			8			1	3	4
7					3	2	6	9	7
8	6			9	5	1	3	2	8
9	3	2	9	7			4	1	5
	A	B	C	D	E	F	G	H	I
1		4		2		9	5		3		Step 14: Complete Column D: need #s 4 & 6…
2		5		3	1				2		#6 can't go in Cell D7 (cf #6 in Row 7 @ G7), so
3		3	6	5	7						#6 MUST go in Cell D4, & therefore #4 MUST go in Cell D7
4	4	1		6		3		8	9
5			3	1	4	7	2	5			Step 15: #4 is now in Rows 7 & 9: #4 MUST go in Cell C8
6	7			8			1	3	4		(cf #4 in Column B @ B1 excludes use of Cell B8)
7				4	3	2	6	9	7
8	6		4	9	5	1	3	2	8
9	3	2	9	7			4	1	5
	A	B	C	D	E	F	G	H	I
1		4		2		9	5		3		Step 16: Complete Row 8: #7 MUST go in Cell B8…
2		5		3	1				2
3		3	6	5	7						Step 17: Complete Block FF: need #s 6 & 7…
4	4	1		6		3	7	8	9		#7 can't go in Cell I5 (cf #7 in Row 5 @ F5), so
5			3	1	4	7	2	5	6		#7 MUST go in Cell G4, & therefore #6 MUST go in Cell I5
6	7			8			1	3	4
7				4	3	2	6	9	7
8	6	7	4	9	5	1	3	2	8
9	3	2	9	7			4	1	5
	A	B	C	D	E	F	G	H	I
1		4		2		9	5		3		Step 18: Complete Row 4: need #s 2 & 5…
2		5		3	1				2		#5 can't go in Cell E4 (cf #5 in Column E @ E8), so
3	2	3	6	5	7						#5 MUST go in Cell C4, & therefore #2 MUST go in Cell E4
4	4	1	5	6	2	3	7	8	9
5			3	1	4	7	2	5	6		Step 19: #2 is now in Rows 4 & 5: #2 MUST go in Cell C6
6	7		2	8			1	3	4		(#2 in Column B @ B9 excludes use of Cell B6)
7				4	3	2	6	9	7
8	6	7	4	9	5	1	3	2	8		Step 20: #2 is in Rows 1 & 2: #2 MUST go in Cell A3…
9	3	2	9	7			4	1	5
	A	B	C	D	E	F	G	H	I
1		4		2		9	5		3		Step 21: Complete Block EE: need #s 5 & 9…
2		5		3	1				2		#5 can't go in Cell E6 (cf #5 in Column E @ E8), so
3	2	3	6	5	7				1		#5 MUST go in Cell F6, & therefore #9 MUST go in Cell