AI vs Best Scrabble Players: Why Engines Don’t Always Win
- Average speed
- km/h
- Result
- Finish time
- 50 min
- You entered
- Distance
- 10 km
- You entered
This article explains why top Scrabble engines, despite their immense computational power, do not win every game against the best human players. The short answer is that Scrabble is a game of imperfect information—players do not know the opponent’s rack or the unseen tiles—and engines, when used in a human-like setting, must make decisions under this uncertainty, which introduces variance that humans can exploit.
Formula
The calculator above computes your average pace (min/km) and speed (km/h) for a run or walk. The formula is:
Pace = Total Time (minutes) ÷ Distance (km)
Speed = Distance (km) ÷ (Total Time (minutes) ÷ 60)
Where:
- Total Time (t) is in minutes.
- Distance (d) is in kilometers.
- Pace is in minutes per kilometer (min/km).
- Speed is in kilometers per hour (km/h).
Worked Example
Suppose you run 10 km in 50 minutes. Using the default values:
- Pace = 50 min ÷ 10 km = 5.0 min/km.
- Speed = 10 km ÷ (50 min ÷ 60) = 10 km ÷ 0.8333 h = 12.0 km/h.
So your average pace is 5:00 per kilometer, and your average speed is 12.0 km/h.
Why Use a Pace Calculator?
Runners and walkers use pace to plan training sessions, set realistic race goals, and monitor effort. Knowing your typical pace for a given distance helps you estimate finish times and adjust speed during an event. For example, if you know your 10K pace is 5:30 min/km, you can predict a 55-minute finish. Coaches also use pace zones to ensure athletes train at the correct intensity—easy runs, tempo runs, and intervals all have different target paces.
How to Read the Results
The first output, pace, is the most common metric in running. A lower pace value means faster running (e.g., 4:30 min/km is faster than 6:00 min/km). The second output, speed, is the inverse—higher speed means faster. Both are useful: pace is intuitive for most runners, while speed is often used in cycling or treadmill settings. If you run on a treadmill that shows mph, you can convert: 1 km/h ≈ 0.621 mph.
Common Mistakes and Pitfalls
- Unit mix-ups: Ensure time is in minutes, not hours. If you run 1 hour 30 minutes, enter 90 minutes, not 1.5.
- Distance in miles: If your distance is in miles, convert to kilometers first (1 mile = 1.60934 km) or use a separate calculator.
- Rounding too early: Keep at least two decimal places during intermediate steps to avoid large errors in final pace.
- Ignoring rest stops: If you stop for water, your total time includes those stops, so pace will be slower than your actual running pace.
Limitations of the Formula
The formula assumes a constant pace. In reality, pace varies with terrain, weather, and fatigue. It also does not account for elevation gain, which can significantly slow you down. For hilly courses, your pace will be slower than on flat ground. Additionally, the formula gives an average, not a split-by-split breakdown. For interval training, you need a more detailed analysis.
Frequently Asked Questions
What is a good running pace for a beginner?
A comfortable conversational pace for a beginner is often around 6:30 to 8:00 min/km (10:30 to 12:50 min/mile). The key is to run at an effort where you can hold a conversation. As fitness improves, pace naturally increases.
How do I convert pace from min/km to min/mile?
Multiply the pace in min/km by 1.60934 to get min/mile. For example, 5:00 min/km × 1.60934 = 8:03 min/mile. Conversely, divide min/mile by 1.60934 to get min/km.
Should I use pace or speed on my watch?
Most runners prefer pace because it directly relates to effort per distance. Speed is more common in cycling. Choose the one you can interpret quickly during a run. Many watches display both.
Does the calculator work for walking?
Yes, the formula is the same. Walking pace is typically slower, e.g., 12-15 min/km. Enter your total time and distance, and the calculator will give your average pace and speed.
How accurate is the average pace if I run intervals?
It will give the overall average, but it will not show the variation between fast and slow segments. For interval training, use a GPS watch or track splits to see each interval’s pace.