Html Chessboard 10x10 with c-r mod 10

10 × 10 Chessboard: (row, column, (column − row) mod 10)

10 × 10 chessboard: (r, c, (c − r) mod 10)

Each square shows its row, column on the first line and its remainder on the second. For example, row 1, column 1 has remainder 0, so its label is 1,1,0.

Showing all 100 squares.

Tip: click any square to highlight its 10-square group. All squares in a highlighted group lie in different rows and columns.

Negative differences: the remainder is computed as ((c - r) % 10 + 10) % 10. So square (9, 1) has c − r = −8, giving remainder 2.

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