Abstract: A sudoku-style game for use by a human player includes a game board surface presented to the player which has a plurality of P×Q sub-matrices of cells, each of the cells being divided into a first section and a second section, each section of each cell having sufficient space to contain a visually perceivable indicator, wherein P represents the number of rows in each sub-matrix, and Q represents the number of columns in each sub-matrix, a master matrix having the plurality of P×Q sub-matrices coupled one P×Q sub-matrix to another P×Q sub-matrix to form a desired game board shape, a solution to the game being the completion of the master matrix by the player so that no indicator is repeated more than a respective instructed number of times in each row and column.

Abstract: A toilet cleaning system in which a hand held unit (28) is attached to a conduit (24) (e.g., a pipe, a hose, etc.) that is fully or in part flexible and is connected to a water supply (22). In this embodiment, a “trigger” device (30) is within the hand held unit (28) to prevent or allow the water to travel through the system. A chamber (32) is positioned within the hand held unit (28) and contains a sanitizing agent. The chamber (32) is connected to the portion of the hand held unit (34) containing the “trigger” (30) with a watertight connection (36). The water mixes with the sanitizing agent as it travels through the chamber section containing the sanitizing agent and the mixture exits at point (38) of the hand held unit either through the end of the unit or through a side (39) of the unit (28).

Abstract: A sudoku-style game for use by a human player includes a game board surface presented to the player which has a plurality of P×Q sub-matrices of cells, each of the cells being divided into a first section and a second section, each section of each cell having sufficient space to contain a visually perceivable indicator, wherein P represents the number of rows in each sub-matrix, and Q represents the number of columns in each sub-matrix, a master matrix having the plurality of P×Q sub-matrices coupled one P×Q sub-matrix to another P×Q sub-matrix to form a desired game board shape, a solution to the game being the completion of the master matrix by the player so that no indicator is repeated more than a respective instructed number of times in each row and column.