Almost SK (+1) Loops 题目来自 New Sudoku Forum Type A: The following puzzles have a single triple box link (B3-2-2-2-2-2-2-2-). It occurs typically in very hard puzzles: .......39.....1..5..3.5.8....8.9...6.7...2...1..4.......9.8..5..2....6..4..7.....; Golden Nugget 98.7.....7.....6....6.5.....4...5.3...79..5......2...1..85..9......1...4.....3.2.; Champagne Dry 1.......7.2.4...6...3...5...9..4........62.4....9..8....5.....3.6.2...8.7....1...; Silver Plate Type B: The following are examples of the triple link being in a row (B2-3-2-2-2-2-2-2-): ..1...2...3...4.5.2.......6...7...8.....9.1...5...3...9...1...2.4.9...7...6...9.. Patterns game Jun 2010, joel64 Type C: The next are examples of a triple link being in a column (B2-3-2-2-2-2-2-2-): .12......3.4...2..56.7.......18..9......6...7.....7.5..8.2..1.......5..3....7..6. patterns game Dec 2017, papy999 Variant Almost (+1) SK Loops If the total number of links equals 17, and the number of triple links minus the number of single links = 1, then the logic holds. Type D: Here there is a single box link straddled by a triple row link and a triple column link (3-B1-3-2-2-2-2-2-) ..1..2..3.4.....5.6...7.1.....8.3..2..3...6..9..6.7.....4.8...1.5.....4.8..2..9.. patterns game Aug 23, 2008, JPF Type E: Slight variation (B3-2-1-3-2-2-2-2-): .......12........3..23..4....18....5.6..7.8.......9.....85.....9...4.5..47...6... Platinum Blonde Type F: This example has 3 triple links, 3 double links, and 2 single links (B3-1-3-1-3-2-2-2-): 98.7.....6.....7....7.5.....4.....3...98..4......24..1..89..6......1...2.....3.4. Type G: This has 4 triple links, 3 single links and one double (but also a type B loop). 9..3....6.....597.....9..3......1.9.....7.5...6.4....35.1......7..6......36.....8 patterns game Jul 2010, champagne Type H: This one has 3 triple and 2 single and 3 double links, (or a type D loop) 98.7.....6.....7....7.5.....4.....3...98..4......24..1..89..6......1...2.....3.4.;104;GP;H13; ; ;E; ;;