Reformed Thief

Reformed Thief (18 Fighter/2 Rogue)
In the "Magician" series of books by Raymond E. Feist, Jimmy the Hand starts out as a rogue, but later joins the crown and goes on to become one of the best military commanders. The Reformed Thief is an interpretation of Jimmy the Hand. Two levels of rogue give access to rogue skills, as well as evasion. After the first 2 levels, the Reformed Thief multiclasses to a fighter, learning to fight well with 2 weapons. In combat, with fighter haste boost, he is a feared combatant dealing deadly strikes with 2 khopeshes. When the mob faces away from him, he has the opportunity to find weak spots in the back. Level 20 Fighter/Rogue Lawful Good Human Male Hit Points: 334 Spell Points: 0 BAB: 19\19\24\29\29 Fortitude: 13 Reflex: 13 Will: 8

AC
Base: 10 +5 Chain Shirt: +9 Dex 24: +7 Chaosgarde (Xorian Cipher): +2 Protection +5: +5 Dodge Feat: +1 Two Weapon Defense Feat: +1 Defensive Fighting: +2 Shield Spell (from wand): +4 Barkskin Potion: +3 Total: 44, 47 with +5 shield 30 Strength = +10 to damage (38 str with power surge) Attack bonus = 19+10(strength)+3(weapon focuses)+2(kensai enhancemets)+5(+5 weapon) = +39 (+34 with PA) Damage = +5(weapon)+10(strength)+4(weapon specialisations)+2(specialisation enhancements)+2(kensai) = +23 (+38 with PA)

Using Magic Device
Base: 23 Feats: +3 Golden Cartouche: +3 Voice of the Master: +1 14 Charisma: +2 Greater Heroism:+4 Total: 36 (no fail for raise dead scrolls)

Question: How do you get a base of 23? With level one as a rogue you will get 4, then 19 levels at 0.5 per level is 9.5 giving a base skill of 13.5