BV Grid Scan
1/09/12 De Coq on Sue de Coq Chutes, line and box remainders, and alternates, on Sue’s original post
12/27/11 Sysudoku Sue de Coq ALS forms, verification, SdC enumeration
1/03/12 Aligned Pair Exclusion Requirements, finding removals
1/01/13 Mashing the BUG Near BUG avoidance removals
1/8/13 The Unique Rectangle UR advice on typical cases
1/15/13 Sysudoku UR Strategy Removing parts and outside causes
1/29/13 Beyond the Rectangle Extended rectangle and other local BUGs
BV Map Methods
11/10/11 BV map and XYZ-wings The bv map, regular XYZ-wing, the WXYZ-wing
11/15/11 ER, forcing chain XYZ Irregular wing construction, victim “seeing”. Finding wings.
XY-wings and chains are AIC, toxic ends
12/06/11 Conquering the XY Web Enumeration technique for XY-chain ANL, the XY railroad map
12/20/11 The Remote Pair
An XY-chain of the same two numbers. Conjugate pair removals.