IBM Ponder This #211 · November 2015

To mark the announcement by IBM CEO Ginni Rometty about a new era of cognitive computing (http://www.ibm.com/cognitive/outthink/), this month's Ponder This challenges you to create a uniquely solvable verbal arithmetic equation (https://en.wikipedia.org/wiki/Verbal_arithmetic) using English words, whose result is WATSON, and which is composed of only these six letters.

Here are some (wrong) examples:

• TATTOO-NOT=WATSON - insolvable
• NOT*SON+ON*ANTON=WATSON - the only solution is invalid since it contains a leading zero in "ANTON"

Remember that different letter must have different numerical value.

Solution

Best opened after a real attempt

To be added.