New PlayClassic Chess
Play a complete game of chess against a friend, an online rival or the computer.

Aim around traps and obstacles to finish each compact course in as few strokes as possible.
Stays on this page · the publisher may show a short ad before playAim around traps and obstacles to finish each compact course in as few strokes as possible.
Golf Mini builds each level as a distinct obstacle course with traps and alternate paths. An Easy completion unlocks a Challenge mode with fewer available strokes.
Reach the hole in the minimum number of shots. Hold and drag with the left mouse button to aim, then release to strike; camera and zoom controls help inspect the course.
Use mouse to aim, select, drag or activate the on-screen controls. Exact keys and actions are shown when the game starts.
Tap or drag on the game area where supported. Follow the on-screen prompts and rotate your device if requested.
This image is the catalog artwork supplied with the WGPlayground listing. In-game visuals may differ after the title loads.

Yes. The source says Challenge mode unlocks after Easy mode and reduces the number of available shots.
The current WGPlayground specification lists it as single-player.