C75 Ruy Lopez: Morphy Defense, Modern Steinitz Defense
C75 holds two named lines, all under the name Ruy Lopez. It leaves C74, a position of the same name, with 5...Bd7. That final move, by the bishop, opens a line for the rook on a8 and the queen on d8. Of all other reference positions, the board of C71 (Morphy Defense, Modern Steinitz Defense) comes closest, four squares apart.
| # | White | Black |
|---|---|---|
| 1 | e4 | e5 |
| 2 | Nf3 | Nc6 |
| 3 | Bb5 | a6 |
| 4 | Ba4 | d6 |
| 5 | c3 | Bd7 |
Lines filed under C75
Both share their first ten plies, the whole reference line.
| Name | After the shared start | Plies |
|---|---|---|
| Ruy Lopez: Morphy Defense, Modern Steinitz Defense | (the shared start itself) | 10 |
| Ruy Lopez: Morphy Defense, Modern Steinitz Defense | 6.d4 Nge7 | 12 |
Ruy Lopez: Morphy Defense, Modern Steinitz Defense
- 6.d4 The d-pawn advances two squares to d4, covering c5 and e5, opening a line for the bishop on c1 and the queen on d1.
- 6...Nge7 The knight leaves g8 for e7, opening a line for the rook on h8.
The road to C75
- 1.e4 … 4.Ba4six earlier stops: B00, C20, C40, C44, C60, C70
- 4...d6C71 Modern Steinitz Defense
- 5.c3C74 Modern Steinitz Defense
- 5...Bd7C75
The position after 5...Bd7
White has brought out the knight on f3 and bishop on a4; Black the knight on c6 and bishop on d7. White could capture with Bxc6, Nxe5. White is to move and has 28 legal moves.
Closest boards in other codes
| Code | Line | Differs on |
|---|---|---|
| C76 | Ruy Lopez: Morphy Defense, Modern Steinitz Defense, Fianchetto Variation | four squares: d2, d4, g6, g7 |
| C68 | Ruy Lopez: Exchange Variation | seven squares: c2, c3, a4, c6, d6, d7, c8 |
| C70 | Ruy Lopez: Morphy Defense | seven squares: c2, c3, a4, b5, d6, d7, c8 |
| C62 | Ruy Lopez: Steinitz Defense | eight squares: c2, c3, a4, b5, a6, a7, d7, c8 |
| C72 | Ruy Lopez: Morphy Defense, Modern Steinitz Defense | eight squares: e1, f1, g1, h1, c2, c3, d7, c8 |
| C44 | King’s Knight Opening: Normal Variation | nine squares: f1, c2, c3, a4, a6, d6, a7, d7 … |
| C50 | Italian Game | nine squares: c2, c3, a4, c4, a6, d6, a7, d7 … |