1rb1kbnr/p1pp1p1p/2n1pqp1/1p6/P1P2P2/NQ1PB1PP/1P1KP3/R4BNR w k - 3 12
FEN state: 1rb1kbnr/p1pp1p1p/2n1pqp1/1p6/P1P2P2/NQ1PB1PP/1P1KP3/R4BNR w k - 3 12 ; Best move: a4b5
The current state of the chess board is: Black rook at b8, black bishop at c8, black king at e8, black bishop at f8, black knight at g8 and black rook at h8. Black pawn at a7, black pawn at c7, black pawn at d7, black pawn at f7 and black pawn at h7. Black knight at c6, black pawn at e6, black queen at f6 and black pawn at g6. Black pawn at b5. White pawn at a4, white pawn at c4 and white pawn at f4. White knight at a3, white queen at b3, white pawn at d3, white bishop at e3, white pawn at g3 and white pawn at h3. White pawn at b2, white king at d2 and white pawn at e2. White rook at a1, white bishop at f1, white knight at g1 and white rook at h1. Black kingside is the only castle move available. Half move number is 3. Full move number is 12. White to move.