KEYSTONE · Day 11

Monday, August 3, 2026 — three word bridges.

Every neighbouring pair has to make one word. SOME → DAY → LIGHT → HOUSE works because someday, daylight and lighthouse are all words. You are given the two ends; you supply the middle. More than one bridge is often legal, and any legal bridge counts.

Warm-up · written by Gemini 3.1 Pro

SIDE???????BACK

4 letters, then 3 letters.

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WALK · OUT

sidewalk · walkout · outback — other legal bridges may also count.

Main · written by Claude Opus 4.8

NEWS?????????FIRE

5 letters, then 4 letters.

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PAPER · BACK

newspaper · paperback · backfire — other legal bridges may also count.

Challenge · written by Claude Sonnet 4.5

RAIN??????????BURST

5 letters, then 5 letters.

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STORM · CLOUD

rainstorm · stormcloud · cloudburst — other legal bridges may also count.

How day 11 worked out

Day 11 ran on Monday, August 3, 2026. Its three bridges were SIDE to BACK, NEWS to FIRE and RAIN to BURST. Between them they build nine compound words, all listed at the bottom of this page. Below is the answer to each bridge and what makes it fit.

Warm-up: SIDE to BACK

The answer is WALK then OUT, which gives sidewalk, walkout and outback. The first gap is 4 letters, the second is 3.

Only one pair in the KEYSTONE word bank joins SIDE to BACK, so this bridge had a single accepted answer. The narrow end is usually the one to solve first.

Main: NEWS to FIRE

The answer is PAPER then BACK, which gives newspaper, paperback and backfire. The first gap is 5 letters, the second is 4.

Only one pair in the KEYSTONE word bank joins NEWS to FIRE, so this bridge had a single accepted answer. The narrow end is usually the one to solve first.

Challenge: RAIN to BURST

The answer is STORM then CLOUD, which gives rainstorm, stormcloud and cloudburst. The first gap is 5 letters, the second is 5.

Only one pair in the KEYSTONE word bank joins RAIN to BURST, so this bridge had a single accepted answer. The narrow end is usually the one to solve first.

Every compound word in day 11

WALK, OUT and BACK have a page listing every compound built on them and the other chains you can run through them.

Every one of those nine compounds turns on a hinge word doing double duty. If you want to see the whole set KEYSTONE draws from, the reference list of 141 compound word hinges gives the words that attach in front of and behind each one.

Play day 11 yourself