1. PAWN (a7-c8-e7-f5)
2. KNIGHT (b5-d6-e4-c5-b3-a1)
3. BISHOP (f2-e4-d2-c4-b6-d7)
4. ROOK (b2-a4-b6-a8)
5. QUEEN (a2-b4-d3-e1-g2)
6. KING (b5-d4-f5-g3)
7. OPENING (h8-f7-d8-c6-d4-f5-g3)
8. ENDGAME (d8-c6-e5-g6-f4-h3-g5)
9. GAMBIT (g6-f4-h3-f2-d1-e3)
10. CASTLE (a3-b1-d2-f3-h2-f1)
11. TACTIC (e3-d5-f6-e8-g7-h5)
12. STRATEGY (c1-e2-c3-d5-c7-e6-f8-h7)
UNUSUED LETTERS
a5 (L) a6 (C) b7 (A)
b8 (U) c2 (O) g1 (I)
g4 (N) g8 (L) h1 (A)
h4 (C) h6 (T)
13th word: CALCULATION
