@ Processor. Thanks for your help.
I Kings 6:15 says: "The entire inside, from floor to ceiling, was paneled with wood. He paneled the walls and ceilings with cedar, and he used planks of cypress for the floors."
Where does that mean checker floors? Not a single Bible commentary says alternating material or colors were used ON THE FLOOR.
You said: "Btw, I have a quite impressive collection of Watchtower pictures on my disk, and I could only find a single one showing a checkered floor - and that one picture shows Solomon's temple."
Check these that I posted earlier:
1) My Book of Bible Stories (Story 63) Remember that picture of Solomon's soldier about to cut the baby in 2?
2) My Book of Bible Stories (Story 98)
3) Paradise Lost to Paradise Regained (Page 117) Daniel praying on Checker Floor with Angel
4) Insight Volume 2 (Inside Cover)
5) You Can Live Forever (Page 149)
6) Big Reference Bible (Page 1594 - top picture & bottom picture)