Starting position #336
Back-rank setup: BBNRKQRN
SP-336 · ThroneScout — King on a central file (d/e) with a knight starting on the rim (a/h).
Move the pieces right on the board — full Chess960 rules, castle by dropping the king on the rook.
Position features
The king starts on e1, the rooks on d1 and g1, the queen on f1.
The queenside rook already stands on d1, so castling long moves only the king, from e1 to c1.
A bishop starts in the corner on a1: it has a single diagonal, which the b-pawn unlocks, running out to h8.
One second-rank pawn starts with no defender at all: h2.
The setup belongs to the ThroneScout family; read right to left it becomes position 335.
The engine's main line opens with c4.
Every sentence here is computed from the setup itself and can be checked on the board.
Balance
MBI 10 Morozov Balance Index: 10 of 100 — class D — largest edge.
- Engine evaluation of the starting position: +43 centipawns for White (depth 49, 400 000 000 nodes).
- Rank 869 of 960 by balance — 1 is the most balanced start.
- Balance band L — large edge · dynamics along the play-out: volatile
- Evaluation along the engine's main line (60 half-moves): +47 → +80 → +92 → +37
Position facts
- Mirror twin: position #335
- The king starts on e, the rooks on d and g
- King and rook are neighbours — castling from adjacent squares feels unusual
- It becomes the daily position in 330 days
Puzzles from this position
- Attack on the uncastled king: queen to a8 — Chess960 specifics · 780
- Attack on the uncastled king: queen to g7 (h7) — Chess960 specifics · 780
- Attack on the uncastled king: pawn to g3 (h2·10) — Chess960 specifics · 780
- Attack on the uncastled king: pawn to h6 (g5·14) — Chess960 specifics · 780
- Winning blow: rook to f8 (c8) — Chess960 specifics · 920
- Attack on the uncastled king: bishop to e4 (b1·23) — Chess960 specifics · 1200
- Attack on the uncastled king: knight to c7 (a8) — Chess960 specifics · 1560
- Mate in 3: rook to f4 (f1·3) — Chess960 specifics · 1860
- Mate in 3: knight to c4 (e5) — Chess960 specifics · 1980
- Chess960 tactic on g8 (g7·4) — Chess960 specifics · 2400
This position appears in course day 29
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Commentary
The rook already occupies d1, so long castling moves the king alone from e1, and the queen begins on f1 beside her king. A bishop is shut into the corner on a1 with a single diagonal to h8; the second works the light squares from b1. A knight sits in the corner on h1 with g3 as its only move, the second on c1. The pawn on h2 is the only one starting without a defender. The engine's main line opens c4 Ng6, then f4 b6 b3 e6.
Written from the measured facts above and checked against the board before publishing. All 960 positions have one.