HI
Worth 5 points before any premium square, and the 12th highest-scoring of 96 — tied with 21 others.
HI extends into 12 three-letter words, which is the 36th most extendable of 96 — tied with 4 others. That is the number worth memorising: a two-letter word is a place to put tiles, but a well-hooked one is a place to put them where the board stays open.
Every hook
- C→CHI
- G→GHI
- K→KHI
- P→PHI
- C→HIC
- D→HID
- E→HIE
- M→HIM
- N→HIN
- P→HIP
- S→HIS
- T→HIT
Not all of them are equally reachable, which a bare count of 12 hides. HI hooks on 10 distinct letters, and the ones you are likeliest to be holding are E (60% of opening racks), N (36% of opening racks) and T (36% of opening racks). The rarest is K, at 7%.
How often you can actually play it
Out of an opening rack, 6.06% of the time you hold the letters for HI outright, the 44th least likely of 96 — tied with 15 others. Counting a blank as whichever letter is missing lifts that to 12.69%, though spending one of the two blanks on a two-letter word is rarely the play. Exact hypergeometrics over the 100-tile bag, not a simulation.