How to reach exactly 100 in Dartle
Worked periodic-table and U.S. state boards: plan a checkout, compare the remaining darts and know when to stand.
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Plan the remaining gap
Dartle gives you up to three distinct answers. Their values add together; exactly 100 is a perfect finish, a total below 100 can be kept by standing, and going over 100 scores zero. The useful number after each choice is the gap to 100.
This guide uses PlayChainle's October 30 periodic-table board. Its values are atomic numbers, not atomic weights. The Royal Society of Chemistry's periodic table is the factual reference. The board contains a selected set of elements; a real element missing from that set is not an available dart.
| Choice | Value | Total | Still needed |
|---|---|---|---|
| Calcium | 20 | 20 | 80 |
| Mercury | 80 | 100 | 0 |
After Calcium, you need 80. Mercury is an unused answer with that value, so it finishes the round on the second dart. You do not need to use all three darts.
A high first value can still leave a route
Gold is worth 79, leaving a gap of 21 and two darts. There is no 21-value answer on this selected board. That rules out a one-dart finish from here, but it does not rule out two smaller values.
On this board, the remaining exact routes are Hydrogen (1) + Calcium (20); Nitrogen (7) + Silicon (14); Oxygen (8) + Aluminum (13). Each name is distinct and unused. Add their values to 79 and the result is 100.
This is why looking only for the gap itself can miss a finish. With two darts left, look for an unused pair that adds to the gap. With one left, only a single exact value can finish.
Standing keeps what you already have
Suppose you chose Gold and cannot remember any safe way to make 21. Standing keeps 79. Adding Uranium's 92 would take the total to 171 and lose the round for zero.
A safe stand can be the sensible choice when your remaining knowledge is uncertain. There is no random throw in this game: the risk comes from whether you remember an answer's value correctly. A familiar name is not enough; you need its value to fit the remaining space.
A valid answer can still bust
| Choice | Calculation | Outcome |
|---|---|---|
| Hydrogen | 0 + 1 = 1 | 99 left |
| Oxygen | 1 + 8 = 9 | 91 left |
| Uranium | 9 + 92 = 101 | Bust: zero points |
Each element is on the board. The failure is arithmetic, not answer validity. Once the total is over 100, an earlier good dart does not preserve part of the score.
You also cannot reuse a name. Tin is worth 50, but selecting Tin twice is not a valid 100 route. Use the value list and distinct-answer combinations in that date's solution when checking a result.
Work through a U.S. states checkout
The November 8 U.S. states board uses admission order, not population or the year of statehood. Its reference is the numbered state list on PDF page 24 in the Reagan Library's archived protocol guide. Only the 16 states selected for that board are available.
Start with Hawaii, the 50th state. You need another 50 with two darts left. Hawaii cannot be used twice, and no other answer on this board is worth 50, so there is no one-dart finish. The two remaining routes are Ohio (17) + Oregon (33); Vermont (14) + Nevada (36).
| Choice | Value | Total | Still needed |
|---|---|---|---|
| Hawaii | 50 | 50 | 50 |
| Ohio | 17 | 67 | 33 |
| Oregon | 33 | 100 | 0 |
After Ohio, the total is 67. With one dart left, you need exactly 33: Oregon fits. Vermont (14) and Nevada (36) are the other pair after Hawaii; neither route depends on guessing a new value outside the board.
What if the second choice is Washington?
Hawaii (50) plus Washington (42) gives 92, leaving 8 and one dart. South Carolina is the eighth state, but it is absent from this selected board. There is no available 8-value answer, so exactly 100 is no longer reachable in this run.
Stand keeps 92. Delaware (1) or Connecticut (5) could safely raise it to 93 or 97, but Virginia (10) would take it to 102 and score zero. Choose a safe final value only if you know it fits; standing is a reasonable way to protect 92 when you do not.
Try the method on another category
Read the unit before playing. Admission order, atomic number and chapter count are different facts, even if the same numbers appear. After each dart, subtract the running total from 100 and check how many choices you have left.
Play a new practice round to test that process. For a complete solution to a dated board, open the Dartle answers archive after trying it yourself.