2b1kqnr/p1pp3p/2n2pp1/b3p3/4P3/Nr3P1P/P1PPN1P1/R1BQKBR1 b k - 1 13
FEN state: 2b1kqnr/p1pp3p/2n2pp1/b3p3/4P3/Nr3P1P/P1PPN1P1/R1BQKBR1 b k - 1 13 ; Best move: b3a3
The current state of the chess board is: Black bishop at c8, black king at e8, black queen at f8, black knight at g8 and black rook at h8. Black pawn at a7, black pawn at c7, black pawn at d7 and black pawn at h7. Black knight at c6, black pawn at f6 and black pawn at g6. Black bishop at a5 and black pawn at e5. White pawn at e4. White knight at a3, black rook at b3, white pawn at f3 and white pawn at h3. White pawn at a2, white pawn at c2, white pawn at d2, white knight at e2 and white pawn at g2. White rook at a1, white bishop at c1, white queen at d1, white king at e1, white bishop at f1 and white rook at g1. Black kingside is the only castle move available. Half move number is 1. Full move number is 13. Black to move.