Starting position #767
Back-rank setup: RKNNRQBB
SP-767 · RampartGuard — A wing king (b/g) with no knight on the a- or h-file.
Move the pieces right on the board — full Chess960 rules, castle by dropping the king on the rook.
Position features
The king starts on b1, the rooks on a1 and e1, the queen on f1.
From b1 the king makes the longest journey Chess960 allows when castling short: five squares to g1.
A bishop starts in the corner on h1: it has a single diagonal, which the g-pawn unlocks, running out to a8.
One second-rank pawn starts with no defender at all: d2.
The setup belongs to the RampartGuard family; read right to left it becomes position 384.
The engine's main line opens with f4.
Every sentence here is computed from the setup itself and can be checked on the board.
Balance
MBI 51 Morozov Balance Index: 51 of 100 — class C — noticeable edge.
- Engine evaluation of the starting position: +26 centipawns for White (depth 46, 400 000 000 nodes).
- Rank 458 of 960 by balance — 1 is the most balanced start.
- Balance band M — moderate edge · dynamics along the play-out: stable
- Evaluation along the engine's main line (60 half-moves): +32 → +31 → 0
Position facts
- Mirror twin: position #384
- The king starts on b, the rooks on a and e
- King and rook are neighbours — castling from adjacent squares feels unusual
- This position does not come up as the daily position in the next four years
Puzzles from this position
- Attack on the uncastled king: rook to g1 — Chess960 specifics · 780
- Winning blow: pawn to b5 — Chess960 specifics · 780
- Attack on the uncastled king: queen to f4 (f1·6) — Chess960 specifics · 920
- Winning blow: bishop to c5 (g1·4) — Chess960 specifics · 920
- Winning blow: rook to b6 (c6) — Chess960 specifics · 1010
- Winning blow: bishop to e5 (d4·9) — Chess960 specifics · 1280
- Winning blow: bishop to f2 (g1·8) — Chess960 specifics · 1420
- Mate in 2: rook to b5 (b4) — Chess960 specifics · 1450
- Mate in 3: rook to b7 (b1·4) — Chess960 specifics · 1860
- Attack on the uncastled king: pawn to b7 (a6·12) — Chess960 specifics · 2010
This position appears in course day 30
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Commentary
The king begins on b1, and short castling takes him five squares across the board to g1. A bishop holds the corner on h1 with one diagonal to a8; the second bishop is on g1. Among the pawns, d2 has no defender, and c2 leans on the king alone. The queen is on f1, the knights side by side on c1 and d1, the rooks on a1 and e1. The engine's line opens f4 f5, then g3 a5 Nd3 g6.
Written from the measured facts above and checked against the board before publishing. All 960 positions have one.