rnb1k1nr/1pp4p/4q1pb/p2p1p2/5P1P/2N1P3/PPPP1K2/1RB1QBNR w kq - 1 13
FEN state: rnb1k1nr/1pp4p/4q1pb/p2p1p2/5P1P/2N1P3/PPPP1K2/1RB1QBNR w kq - 1 13 ; Best move: b2b3
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black king at e8, black knight at g8 and black rook at h8. Black pawn at b7, black pawn at c7 and black pawn at h7. Black queen at e6, black pawn at g6 and black bishop at h6. Black pawn at a5, black pawn at d5 and black pawn at f5. White pawn at f4 and white pawn at h4. White knight at c3 and white pawn at e3. White pawn at a2, white pawn at b2, white pawn at c2, white pawn at d2 and white king at f2. White rook at b1, white bishop at c1, white queen at e1, white bishop at f1, white knight at g1 and white rook at h1. Black kingside and black queenside castles are available. Half move number is 1. Full move number is 13. White to move.