Starting position #632
Back-rank setup: RBNKBQRN
SP-632 · ThroneScout — The king starts on d or e while at least one knight begins 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 d1, the rooks on a1 and g1, the queen on f1.
Castling ends where it always does: king to g1 and rook to f1 on the short side, king to c1 and rook to d1 on the long one.
The bishops stand on b1 and e1; their long diagonals reach h7 and a5 once the c- and d-pawns step aside.
The second rank carries 2 pawns with no defender at all: b2, h2.
The setup belongs to the ThroneScout family; read right to left it becomes position 237.
The engine's main line opens with c3.
Every sentence here is computed from the setup itself and can be checked on the board.
Balance
MBI 43 Morozov Balance Index: 43 of 100 — class C — noticeable edge.
- Engine evaluation of the starting position: +28 centipawns for White (depth 50, 400 000 000 nodes).
- Rank 542 of 960 by balance — 1 is the most balanced start.
- Balance band M — moderate edge · dynamics along the play-out: volatile
- Evaluation along the engine's main line (60 half-moves): +40 → -27 → -15 → 0
Position facts
- Mirror twin: position #237
- The king starts on d, the rooks on a and g
- It becomes the daily position in 202 days
Puzzles from this position
- Attack on the uncastled king: rook to h4 (h1·12) — Chess960 specifics · 780
- Attack on the uncastled king: pawn to b3 (a2·21) — Chess960 specifics · 780
- Winning blow: bishop to e5 (d4·2) — Chess960 specifics · 920
- Winning blow: queen to e5 (d6) — Chess960 specifics · 970
- Winning blow: rook to d6 (d2) — Chess960 specifics · 1060
- Winning blow: queen to g6 (d3·2) — Chess960 specifics · 1200
- Mate in 2: knight to b6 (d5) — Chess960 specifics · 1320
- Winning blow: queen to a6 (b7·4) — Chess960 specifics · 1430
- Mate in 3: rook to f8 (f1) — Chess960 specifics · 1630
- Winning blow: rook to e8 (e1·23) — Chess960 specifics · 1870
This position appears in course day 132
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Commentary
The king begins on d1 and castling is ordinary in both directions, with the rooks on a1 and g1. The bishops are on b1 and e1, the knights on c1 and h1 — the cornered one has g3 as its only move. Two pawns begin with no defender at all: b2 and h2. The queen is on f1. The search ran to depth 50 here and calls it +28 centipawns: c3 c6 f4 Ng6 Nd3 f6.
Written from the measured facts above and checked against the board before publishing. All 960 positions have one.