Starting position #733
Back-rank setup: RKNBQNBR
SP-733 · RampartGuard — The king starts out on a wing file, b or g, with neither knight in a corner.
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 h1, the queen on e1.
From b1 the king makes the longest journey Chess960 allows when castling short: five squares to g1.
The bishops stand on d1 and g1; their long diagonals reach h5 and a7 once the e- and f-pawns step aside.
One second-rank pawn starts with no defender at all: g2.
The setup belongs to the RampartGuard family; read right to left it becomes position 424.
The engine's main line opens with a4.
Every sentence here is computed from the setup itself and can be checked on the board.
Balance
MBI 37 Morozov Balance Index: 37 of 100 — class C — noticeable edge.
- Engine evaluation of the starting position: +30 centipawns for White (depth 44, 400 000 000 nodes).
- Rank 596 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 (54 half-moves): +29 → 0 → 0
Position facts
- Mirror twin: position #424
- The king starts on b, the rooks on a and h
- King and rook are neighbours — castling from adjacent squares feels unusual
- It becomes the daily position in 224 days
Puzzles from this position
- Attack on the uncastled king: knight to h1 (f2) — Chess960 specifics · 780
- Attack on the uncastled king: queen to h8 (e5·3) — Chess960 specifics · 780
- Winning blow: queen to e5 (c7) — Chess960 specifics · 1010
- Attack on the uncastled king: pawn to e3 (d2·11) — Chess960 specifics · 1060
- Attack on the uncastled king: rook to e8 (e2·2) — Chess960 specifics · 1090
- Winning blow: rook to e7 (d7·3) — Chess960 specifics · 1200
- Winning blow: queen to a8 (d8·3) — Chess960 specifics · 1280
- Mate in 2: queen to e6 (c8) — Chess960 specifics · 1320
- Winning blow: bishop to b6 (d4·3) — Chess960 specifics · 1420
- Winning blow: rook to c3 (b3·6) — Chess960 specifics · 1870
This position appears in course day 90
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Commentary
The king begins on b1, and short castling takes him five squares across the board to g1. The bishops are on d1 and g1, the knights on c1 and f1. The pawn on g2 has no defender, and b2 leans on the king alone. The queen is on e1, the rooks in the corners on a1 and h1. The engine's first move is the a-pawn: a4 a5 f4 f6 e4 e5.
Written from the measured facts above and checked against the board before publishing. All 960 positions have one.